Commit 863dfb59 authored by Nathaniel Wesley Filardo's avatar Nathaniel Wesley Filardo Committed by Marcel Stör
Browse files

SSL rampage (#2938)

* Remove stale putative MD2 support

This hasn't worked in a while, presumably since one of our upstream
merges.  Don't bother making it work, since MD2 is generally considered
insecure.

* Land mbedtls 2.16.3-77-gf02988e57

* TLS: remove some dead code from espconn_mbedtls

There was some... frankly kind of scary buffer and data shuffling if
ESP8266_PLATFORM was defined.  Since we don't, in fact, define that
preprocessor symbol, just drop the code lest anyone (possibly future-me)
be scared.

* TLS: espconn_mbedtls: run through astyle

No functional changes

* TLS: espconn_mbedtls: put the file_params on the stack

There's no need to malloc a structure that's used only locally.

* TLS: Further minor tidying of mbedtls glue

What an absolute shitshow this is.  mbedtls should absolutely not
be mentioned inside sys/socket.h and app/mbedtls/app/lwIPSocket.c is not
so much glue as it as a complete copy of a random subset of lwIP; it
should go, but we aren't there yet.

Get rid of the mysterious "mbedlts_record" struct, which housed merely a
length of bytes sent solely for gating the "record sent" callback.

Remove spurious __attribute__((weak)) from symbols not otherwise
defined and rename them to emphasize that they are not actually part of
mbedtls proper.

* TLS: Rampage esp mbedtls glue and delete unused code

This at least makes the shitshow smaller

* TLS: lwip: fix some memp definitions

I presume these also need the new arguments

* TLS: Remove more non-NodeMCU code from our mbedtls

* TLS: drop support for 1.1

Depending on who you ask it's either EOL already or EOL soon, so
we may as well get rid of it now.
parent f5672207
......@@ -37,10 +37,6 @@
#include <strings.h>
#include <errno.h>
#ifdef MD2_ENABLE
#include "ssl/ssl_crypto.h"
#endif
#ifdef SHA2_ENABLE
#include "sha2.h"
#endif
......@@ -60,9 +56,6 @@ typedef char ensure_int_and_size_t_same[(sizeof(int)==sizeof(size_t)) ? 0 : -1];
static const digest_mech_info_t hash_mechs[] ICACHE_RODATA_ATTR =
{
#ifdef MD2_ENABLE
MECH(MD2, _ , MD2_SIZE, 16),
#endif
MECH(MD5, , MD5_DIGEST_LENGTH, 64)
,MECH(SHA1, , SHA1_DIGEST_LENGTH, 64)
#ifdef SHA2_ENABLE
......
......@@ -52,14 +52,14 @@ LWIP_MEMPOOL(FRAG_PBUF, MEMP_NUM_FRAG_PBUF, sizeof(struct pbuf_custom
#endif /* IP_FRAG && !IP_FRAG_USES_STATIC_BUF && !LWIP_NETIF_TX_SINGLE_PBUF */
#if LWIP_NETCONN
LWIP_MEMPOOL(NETBUF, MEMP_NUM_NETBUF, sizeof(struct netbuf), "NETBUF")
LWIP_MEMPOOL(NETCONN, MEMP_NUM_NETCONN, sizeof(struct netconn), "NETCONN")
LWIP_MEMPOOL(NETBUF, MEMP_NUM_NETBUF, sizeof(struct netbuf), "NETBUF", DMEM_ATTR)
LWIP_MEMPOOL(NETCONN, MEMP_NUM_NETCONN, sizeof(struct netconn), "NETCONN", DMEM_ATTR)
#endif /* LWIP_NETCONN */
#if NO_SYS==0
LWIP_MEMPOOL(TCPIP_MSG_API, MEMP_NUM_TCPIP_MSG_API, sizeof(struct tcpip_msg), "TCPIP_MSG_API")
LWIP_MEMPOOL(TCPIP_MSG_API, MEMP_NUM_TCPIP_MSG_API, sizeof(struct tcpip_msg), "TCPIP_MSG_API", DMEM_ATTR)
#if !LWIP_TCPIP_CORE_LOCKING_INPUT
LWIP_MEMPOOL(TCPIP_MSG_INPKT,MEMP_NUM_TCPIP_MSG_INPKT, sizeof(struct tcpip_msg), "TCPIP_MSG_INPKT")
LWIP_MEMPOOL(TCPIP_MSG_INPKT,MEMP_NUM_TCPIP_MSG_INPKT, sizeof(struct tcpip_msg), "TCPIP_MSG_INPKT", DMEM_ATTR)
#endif /* !LWIP_TCPIP_CORE_LOCKING_INPUT */
#endif /* NO_SYS==0 */
......@@ -82,13 +82,13 @@ LWIP_MEMPOOL(SNMP_VARBIND, MEMP_NUM_SNMP_VARBIND, sizeof(struct snmp_varbin
LWIP_MEMPOOL(SNMP_VALUE, MEMP_NUM_SNMP_VALUE, SNMP_MAX_VALUE_SIZE, "SNMP_VALUE")
#endif /* LWIP_SNMP */
#if LWIP_DNS && LWIP_SOCKET
LWIP_MEMPOOL(NETDB, MEMP_NUM_NETDB, NETDB_ELEM_SIZE, "NETDB")
LWIP_MEMPOOL(NETDB, MEMP_NUM_NETDB, NETDB_ELEM_SIZE, "NETDB", DMEM_ATTR)
#endif /* LWIP_DNS && LWIP_SOCKET */
#if LWIP_DNS && DNS_LOCAL_HOSTLIST && DNS_LOCAL_HOSTLIST_IS_DYNAMIC
LWIP_MEMPOOL(LOCALHOSTLIST, MEMP_NUM_LOCALHOSTLIST, LOCALHOSTLIST_ELEM_SIZE, "LOCALHOSTLIST")
LWIP_MEMPOOL(LOCALHOSTLIST, MEMP_NUM_LOCALHOSTLIST, LOCALHOSTLIST_ELEM_SIZE, "LOCALHOSTLIST", DMEM_ATTR)
#endif /* LWIP_DNS && DNS_LOCAL_HOSTLIST && DNS_LOCAL_HOSTLIST_IS_DYNAMIC */
#if PPP_SUPPORT && PPPOE_SUPPORT
LWIP_MEMPOOL(PPPOE_IF, MEMP_NUM_PPPOE_INTERFACES, sizeof(struct pppoe_softc), "PPPOE_IF")
LWIP_MEMPOOL(PPPOE_IF, MEMP_NUM_PPPOE_INTERFACES, sizeof(struct pppoe_softc), "PPPOE_IF", DMEM_ATTR)
#endif /* PPP_SUPPORT && PPPOE_SUPPORT */
/*
......
/**
* \file aes.h
*
* \brief The Advanced Encryption Standard (AES) specifies a FIPS-approved
* \brief This file contains AES definitions and functions.
*
* The Advanced Encryption Standard (AES) specifies a FIPS-approved
* cryptographic algorithm that can be used to protect electronic
* data.
*
......@@ -11,7 +13,13 @@
* <em>ISO/IEC 18033-2:2006: Information technology -- Security
* techniques -- Encryption algorithms -- Part 2: Asymmetric
* ciphers</em>.
*
* The AES-XTS block mode is standardized by NIST SP 800-38E
* <https://nvlpubs.nist.gov/nistpubs/legacy/sp/nistspecialpublication800-38e.pdf>
* and described in detail by IEEE P1619
* <https://ieeexplore.ieee.org/servlet/opac?punumber=4375278>.
*/
/* Copyright (C) 2006-2018, Arm Limited (or its affiliates), All Rights Reserved.
* SPDX-License-Identifier: Apache-2.0
*
......@@ -50,8 +58,13 @@
#define MBEDTLS_ERR_AES_INVALID_KEY_LENGTH -0x0020 /**< Invalid key length. */
#define MBEDTLS_ERR_AES_INVALID_INPUT_LENGTH -0x0022 /**< Invalid data input length. */
/* Error codes in range 0x0023-0x0025 */
/* Error codes in range 0x0021-0x0025 */
#define MBEDTLS_ERR_AES_BAD_INPUT_DATA -0x0021 /**< Invalid input data. */
/* MBEDTLS_ERR_AES_FEATURE_UNAVAILABLE is deprecated and should not be used. */
#define MBEDTLS_ERR_AES_FEATURE_UNAVAILABLE -0x0023 /**< Feature not available. For example, an unsupported AES key size. */
/* MBEDTLS_ERR_AES_HW_ACCEL_FAILED is deprecated and should not be used. */
#define MBEDTLS_ERR_AES_HW_ACCEL_FAILED -0x0025 /**< AES hardware accelerator failed. */
#if ( defined(__ARMCC_VERSION) || defined(_MSC_VER) ) && \
......@@ -59,18 +72,18 @@
#define inline __inline
#endif
#if !defined(MBEDTLS_AES_ALT)
// Regular implementation
//
#ifdef __cplusplus
extern "C" {
#endif
#if !defined(MBEDTLS_AES_ALT)
// Regular implementation
//
/**
* \brief The AES context-type definition.
*/
typedef struct
typedef struct mbedtls_aes_context
{
int nr; /*!< The number of rounds. */
uint32_t *rk; /*!< AES round keys. */
......@@ -85,13 +98,30 @@ typedef struct
}
mbedtls_aes_context;
#if defined(MBEDTLS_CIPHER_MODE_XTS)
/**
* \brief The AES XTS context-type definition.
*/
typedef struct mbedtls_aes_xts_context
{
mbedtls_aes_context crypt; /*!< The AES context to use for AES block
encryption or decryption. */
mbedtls_aes_context tweak; /*!< The AES context used for tweak
computation. */
} mbedtls_aes_xts_context;
#endif /* MBEDTLS_CIPHER_MODE_XTS */
#else /* MBEDTLS_AES_ALT */
#include "aes_alt.h"
#endif /* MBEDTLS_AES_ALT */
/**
* \brief This function initializes the specified AES context.
*
* It must be the first API called before using
* the context.
*
* \param ctx The AES context to initialize.
* \param ctx The AES context to initialize. This must not be \c NULL.
*/
void mbedtls_aes_init( mbedtls_aes_context *ctx );
......@@ -99,21 +129,46 @@ void mbedtls_aes_init( mbedtls_aes_context *ctx );
* \brief This function releases and clears the specified AES context.
*
* \param ctx The AES context to clear.
* If this is \c NULL, this function does nothing.
* Otherwise, the context must have been at least initialized.
*/
void mbedtls_aes_free( mbedtls_aes_context *ctx );
#if defined(MBEDTLS_CIPHER_MODE_XTS)
/**
* \brief This function initializes the specified AES XTS context.
*
* It must be the first API called before using
* the context.
*
* \param ctx The AES XTS context to initialize. This must not be \c NULL.
*/
void mbedtls_aes_xts_init( mbedtls_aes_xts_context *ctx );
/**
* \brief This function releases and clears the specified AES XTS context.
*
* \param ctx The AES XTS context to clear.
* If this is \c NULL, this function does nothing.
* Otherwise, the context must have been at least initialized.
*/
void mbedtls_aes_xts_free( mbedtls_aes_xts_context *ctx );
#endif /* MBEDTLS_CIPHER_MODE_XTS */
/**
* \brief This function sets the encryption key.
*
* \param ctx The AES context to which the key should be bound.
* It must be initialized.
* \param key The encryption key.
* This must be a readable buffer of size \p keybits bits.
* \param keybits The size of data passed in bits. Valid options are:
* <ul><li>128 bits</li>
* <li>192 bits</li>
* <li>256 bits</li></ul>
*
* \return \c 0 on success or #MBEDTLS_ERR_AES_INVALID_KEY_LENGTH
* on failure.
* \return \c 0 on success.
* \return #MBEDTLS_ERR_AES_INVALID_KEY_LENGTH on failure.
*/
int mbedtls_aes_setkey_enc( mbedtls_aes_context *ctx, const unsigned char *key,
unsigned int keybits );
......@@ -122,17 +177,62 @@ int mbedtls_aes_setkey_enc( mbedtls_aes_context *ctx, const unsigned char *key,
* \brief This function sets the decryption key.
*
* \param ctx The AES context to which the key should be bound.
* It must be initialized.
* \param key The decryption key.
* This must be a readable buffer of size \p keybits bits.
* \param keybits The size of data passed. Valid options are:
* <ul><li>128 bits</li>
* <li>192 bits</li>
* <li>256 bits</li></ul>
*
* \return \c 0 on success, or #MBEDTLS_ERR_AES_INVALID_KEY_LENGTH on failure.
* \return \c 0 on success.
* \return #MBEDTLS_ERR_AES_INVALID_KEY_LENGTH on failure.
*/
int mbedtls_aes_setkey_dec( mbedtls_aes_context *ctx, const unsigned char *key,
unsigned int keybits );
#if defined(MBEDTLS_CIPHER_MODE_XTS)
/**
* \brief This function prepares an XTS context for encryption and
* sets the encryption key.
*
* \param ctx The AES XTS context to which the key should be bound.
* It must be initialized.
* \param key The encryption key. This is comprised of the XTS key1
* concatenated with the XTS key2.
* This must be a readable buffer of size \p keybits bits.
* \param keybits The size of \p key passed in bits. Valid options are:
* <ul><li>256 bits (each of key1 and key2 is a 128-bit key)</li>
* <li>512 bits (each of key1 and key2 is a 256-bit key)</li></ul>
*
* \return \c 0 on success.
* \return #MBEDTLS_ERR_AES_INVALID_KEY_LENGTH on failure.
*/
int mbedtls_aes_xts_setkey_enc( mbedtls_aes_xts_context *ctx,
const unsigned char *key,
unsigned int keybits );
/**
* \brief This function prepares an XTS context for decryption and
* sets the decryption key.
*
* \param ctx The AES XTS context to which the key should be bound.
* It must be initialized.
* \param key The decryption key. This is comprised of the XTS key1
* concatenated with the XTS key2.
* This must be a readable buffer of size \p keybits bits.
* \param keybits The size of \p key passed in bits. Valid options are:
* <ul><li>256 bits (each of key1 and key2 is a 128-bit key)</li>
* <li>512 bits (each of key1 and key2 is a 256-bit key)</li></ul>
*
* \return \c 0 on success.
* \return #MBEDTLS_ERR_AES_INVALID_KEY_LENGTH on failure.
*/
int mbedtls_aes_xts_setkey_dec( mbedtls_aes_xts_context *ctx,
const unsigned char *key,
unsigned int keybits );
#endif /* MBEDTLS_CIPHER_MODE_XTS */
/**
* \brief This function performs an AES single-block encryption or
* decryption operation.
......@@ -146,10 +246,13 @@ int mbedtls_aes_setkey_dec( mbedtls_aes_context *ctx, const unsigned char *key,
* call to this API with the same context.
*
* \param ctx The AES context to use for encryption or decryption.
* It must be initialized and bound to a key.
* \param mode The AES operation: #MBEDTLS_AES_ENCRYPT or
* #MBEDTLS_AES_DECRYPT.
* \param input The 16-Byte buffer holding the input data.
* \param output The 16-Byte buffer holding the output data.
* \param input The buffer holding the input data.
* It must be readable and at least \c 16 Bytes long.
* \param output The buffer where the output data will be written.
* It must be writeable and at least \c 16 Bytes long.
* \return \c 0 on success.
*/
......@@ -172,8 +275,8 @@ int mbedtls_aes_crypt_ecb( mbedtls_aes_context *ctx,
* mbedtls_aes_setkey_enc() or mbedtls_aes_setkey_dec() must be called
* before the first call to this API with the same context.
*
* \note This function operates on aligned blocks, that is, the input size
* must be a multiple of the AES block size of 16 Bytes.
* \note This function operates on full blocks, that is, the input size
* must be a multiple of the AES block size of \c 16 Bytes.
*
* \note Upon exit, the content of the IV is updated so that you can
* call the same function again on the next
......@@ -184,15 +287,20 @@ int mbedtls_aes_crypt_ecb( mbedtls_aes_context *ctx,
*
*
* \param ctx The AES context to use for encryption or decryption.
* It must be initialized and bound to a key.
* \param mode The AES operation: #MBEDTLS_AES_ENCRYPT or
* #MBEDTLS_AES_DECRYPT.
* \param length The length of the input data in Bytes. This must be a
* multiple of the block size (16 Bytes).
* multiple of the block size (\c 16 Bytes).
* \param iv Initialization vector (updated after use).
* It must be a readable and writeable buffer of \c 16 Bytes.
* \param input The buffer holding the input data.
* It must be readable and of size \p length Bytes.
* \param output The buffer holding the output data.
* It must be writeable and of size \p length Bytes.
*
* \return \c 0 on success, or #MBEDTLS_ERR_AES_INVALID_INPUT_LENGTH
* \return \c 0 on success.
* \return #MBEDTLS_ERR_AES_INVALID_INPUT_LENGTH
* on failure.
*/
int mbedtls_aes_crypt_cbc( mbedtls_aes_context *ctx,
......@@ -203,6 +311,50 @@ int mbedtls_aes_crypt_cbc( mbedtls_aes_context *ctx,
unsigned char *output );
#endif /* MBEDTLS_CIPHER_MODE_CBC */
#if defined(MBEDTLS_CIPHER_MODE_XTS)
/**
* \brief This function performs an AES-XTS encryption or decryption
* operation for an entire XTS data unit.
*
* AES-XTS encrypts or decrypts blocks based on their location as
* defined by a data unit number. The data unit number must be
* provided by \p data_unit.
*
* NIST SP 800-38E limits the maximum size of a data unit to 2^20
* AES blocks. If the data unit is larger than this, this function
* returns #MBEDTLS_ERR_AES_INVALID_INPUT_LENGTH.
*
* \param ctx The AES XTS context to use for AES XTS operations.
* It must be initialized and bound to a key.
* \param mode The AES operation: #MBEDTLS_AES_ENCRYPT or
* #MBEDTLS_AES_DECRYPT.
* \param length The length of a data unit in Bytes. This can be any
* length between 16 bytes and 2^24 bytes inclusive
* (between 1 and 2^20 block cipher blocks).
* \param data_unit The address of the data unit encoded as an array of 16
* bytes in little-endian format. For disk encryption, this
* is typically the index of the block device sector that
* contains the data.
* \param input The buffer holding the input data (which is an entire
* data unit). This function reads \p length Bytes from \p
* input.
* \param output The buffer holding the output data (which is an entire
* data unit). This function writes \p length Bytes to \p
* output.
*
* \return \c 0 on success.
* \return #MBEDTLS_ERR_AES_INVALID_INPUT_LENGTH if \p length is
* smaller than an AES block in size (16 Bytes) or if \p
* length is larger than 2^20 blocks (16 MiB).
*/
int mbedtls_aes_crypt_xts( mbedtls_aes_xts_context *ctx,
int mode,
size_t length,
const unsigned char data_unit[16],
const unsigned char *input,
unsigned char *output );
#endif /* MBEDTLS_CIPHER_MODE_XTS */
#if defined(MBEDTLS_CIPHER_MODE_CFB)
/**
* \brief This function performs an AES-CFB128 encryption or decryption
......@@ -228,13 +380,18 @@ int mbedtls_aes_crypt_cbc( mbedtls_aes_context *ctx,
*
*
* \param ctx The AES context to use for encryption or decryption.
* It must be initialized and bound to a key.
* \param mode The AES operation: #MBEDTLS_AES_ENCRYPT or
* #MBEDTLS_AES_DECRYPT.
* \param length The length of the input data.
* \param length The length of the input data in Bytes.
* \param iv_off The offset in IV (updated after use).
* It must point to a valid \c size_t.
* \param iv The initialization vector (updated after use).
* It must be a readable and writeable buffer of \c 16 Bytes.
* \param input The buffer holding the input data.
* It must be readable and of size \p length Bytes.
* \param output The buffer holding the output data.
* It must be writeable and of size \p length Bytes.
*
* \return \c 0 on success.
*/
......@@ -269,12 +426,16 @@ int mbedtls_aes_crypt_cfb128( mbedtls_aes_context *ctx,
*
*
* \param ctx The AES context to use for encryption or decryption.
* It must be initialized and bound to a key.
* \param mode The AES operation: #MBEDTLS_AES_ENCRYPT or
* #MBEDTLS_AES_DECRYPT
* \param length The length of the input data.
* \param iv The initialization vector (updated after use).
* It must be a readable and writeable buffer of \c 16 Bytes.
* \param input The buffer holding the input data.
* It must be readable and of size \p length Bytes.
* \param output The buffer holding the output data.
* It must be writeable and of size \p length Bytes.
*
* \return \c 0 on success.
*/
......@@ -286,6 +447,61 @@ int mbedtls_aes_crypt_cfb8( mbedtls_aes_context *ctx,
unsigned char *output );
#endif /*MBEDTLS_CIPHER_MODE_CFB */
#if defined(MBEDTLS_CIPHER_MODE_OFB)
/**
* \brief This function performs an AES-OFB (Output Feedback Mode)
* encryption or decryption operation.
*
* For OFB, you must set up the context with
* mbedtls_aes_setkey_enc(), regardless of whether you are
* performing an encryption or decryption operation. This is
* because OFB mode uses the same key schedule for encryption and
* decryption.
*
* The OFB operation is identical for encryption or decryption,
* therefore no operation mode needs to be specified.
*
* \note Upon exit, the content of iv, the Initialisation Vector, is
* updated so that you can call the same function again on the next
* block(s) of data and get the same result as if it was encrypted
* in one call. This allows a "streaming" usage, by initialising
* iv_off to 0 before the first call, and preserving its value
* between calls.
*
* For non-streaming use, the iv should be initialised on each call
* to a unique value, and iv_off set to 0 on each call.
*
* If you need to retain the contents of the initialisation vector,
* you must either save it manually or use the cipher module
* instead.
*
* \warning For the OFB mode, the initialisation vector must be unique
* every encryption operation. Reuse of an initialisation vector
* will compromise security.
*
* \param ctx The AES context to use for encryption or decryption.
* It must be initialized and bound to a key.
* \param length The length of the input data.
* \param iv_off The offset in IV (updated after use).
* It must point to a valid \c size_t.
* \param iv The initialization vector (updated after use).
* It must be a readable and writeable buffer of \c 16 Bytes.
* \param input The buffer holding the input data.
* It must be readable and of size \p length Bytes.
* \param output The buffer holding the output data.
* It must be writeable and of size \p length Bytes.
*
* \return \c 0 on success.
*/
int mbedtls_aes_crypt_ofb( mbedtls_aes_context *ctx,
size_t length,
size_t *iv_off,
unsigned char iv[16],
const unsigned char *input,
unsigned char *output );
#endif /* MBEDTLS_CIPHER_MODE_OFB */
#if defined(MBEDTLS_CIPHER_MODE_CTR)
/**
* \brief This function performs an AES-CTR encryption or decryption
......@@ -300,20 +516,68 @@ int mbedtls_aes_crypt_cfb8( mbedtls_aes_context *ctx,
* must use the context initialized with mbedtls_aes_setkey_enc()
* for both #MBEDTLS_AES_ENCRYPT and #MBEDTLS_AES_DECRYPT.
*
* \warning You must keep the maximum use of your counter in mind.
* \warning You must never reuse a nonce value with the same key. Doing so
* would void the encryption for the two messages encrypted with
* the same nonce and key.
*
* There are two common strategies for managing nonces with CTR:
*
* 1. You can handle everything as a single message processed over
* successive calls to this function. In that case, you want to
* set \p nonce_counter and \p nc_off to 0 for the first call, and
* then preserve the values of \p nonce_counter, \p nc_off and \p
* stream_block across calls to this function as they will be
* updated by this function.
*
* With this strategy, you must not encrypt more than 2**128
* blocks of data with the same key.
*
* 2. You can encrypt separate messages by dividing the \p
* nonce_counter buffer in two areas: the first one used for a
* per-message nonce, handled by yourself, and the second one
* updated by this function internally.
*
* For example, you might reserve the first 12 bytes for the
* per-message nonce, and the last 4 bytes for internal use. In that
* case, before calling this function on a new message you need to
* set the first 12 bytes of \p nonce_counter to your chosen nonce
* value, the last 4 to 0, and \p nc_off to 0 (which will cause \p
* stream_block to be ignored). That way, you can encrypt at most
* 2**96 messages of up to 2**32 blocks each with the same key.
*
* The per-message nonce (or information sufficient to reconstruct
* it) needs to be communicated with the ciphertext and must be unique.
* The recommended way to ensure uniqueness is to use a message
* counter. An alternative is to generate random nonces, but this
* limits the number of messages that can be securely encrypted:
* for example, with 96-bit random nonces, you should not encrypt
* more than 2**32 messages with the same key.
*
* Note that for both stategies, sizes are measured in blocks and
* that an AES block is 16 bytes.
*
* \warning Upon return, \p stream_block contains sensitive data. Its
* content must not be written to insecure storage and should be
* securely discarded as soon as it's no longer needed.
*
* \param ctx The AES context to use for encryption or decryption.
* It must be initialized and bound to a key.
* \param length The length of the input data.
* \param nc_off The offset in the current \p stream_block, for
* resuming within the current cipher stream. The
* offset pointer should be 0 at the start of a stream.
* It must point to a valid \c size_t.
* \param nonce_counter The 128-bit nonce and counter.
* It must be a readable-writeable buffer of \c 16 Bytes.
* \param stream_block The saved stream block for resuming. This is
* overwritten by the function.
* It must be a readable-writeable buffer of \c 16 Bytes.
* \param input The buffer holding the input data.
* It must be readable and of size \p length Bytes.
* \param output The buffer holding the output data.
* It must be writeable and of size \p length Bytes.
*
* \return \c 0 on success.
* \return \c 0 on success.
*/
int mbedtls_aes_crypt_ctr( mbedtls_aes_context *ctx,
size_t length,
......@@ -364,7 +628,7 @@ int mbedtls_internal_aes_decrypt( mbedtls_aes_context *ctx,
* \brief Deprecated internal AES block encryption function
* without return value.
*
* \deprecated Superseded by mbedtls_aes_encrypt_ext() in 2.5.0.
* \deprecated Superseded by mbedtls_internal_aes_encrypt()
*
* \param ctx The AES context to use for encryption.
* \param input Plaintext block.
......@@ -378,7 +642,7 @@ MBEDTLS_DEPRECATED void mbedtls_aes_encrypt( mbedtls_aes_context *ctx,
* \brief Deprecated internal AES block decryption function
* without return value.
*
* \deprecated Superseded by mbedtls_aes_decrypt_ext() in 2.5.0.
* \deprecated Superseded by mbedtls_internal_aes_decrypt()
*
* \param ctx The AES context to use for decryption.
* \param input Ciphertext block.
......@@ -391,25 +655,18 @@ MBEDTLS_DEPRECATED void mbedtls_aes_decrypt( mbedtls_aes_context *ctx,
#undef MBEDTLS_DEPRECATED
#endif /* !MBEDTLS_DEPRECATED_REMOVED */
#ifdef __cplusplus
}
#endif
#else /* MBEDTLS_AES_ALT */
#include "aes_alt.h"
#endif /* MBEDTLS_AES_ALT */
#ifdef __cplusplus
extern "C" {
#endif
#if defined(MBEDTLS_SELF_TEST)
/**
* \brief Checkup routine.
*
* \return \c 0 on success, or \c 1 on failure.
* \return \c 0 on success.
* \return \c 1 on failure.
*/
int mbedtls_aes_self_test( int verbose );
#endif /* MBEDTLS_SELF_TEST */
#ifdef __cplusplus
}
#endif
......
......@@ -2,6 +2,9 @@
* \file aesni.h
*
* \brief AES-NI for hardware AES acceleration on some Intel processors
*
* \warning These functions are only for internal use by other library
* functions; you must not call them directly.
*/
/*
* Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
......@@ -24,6 +27,12 @@
#ifndef MBEDTLS_AESNI_H
#define MBEDTLS_AESNI_H
#if !defined(MBEDTLS_CONFIG_FILE)
#include "config.h"
#else
#include MBEDTLS_CONFIG_FILE
#endif
#include "aes.h"
#define MBEDTLS_AESNI_AES 0x02000000u
......@@ -42,7 +51,10 @@ extern "C" {
#endif
/**
* \brief AES-NI features detection routine
* \brief Internal function to detect the AES-NI feature in CPUs.
*
* \note This function is only for internal use by other library
* functions; you must not call it directly.
*
* \param what The feature to detect
* (MBEDTLS_AESNI_AES or MBEDTLS_AESNI_CLMUL)
......@@ -52,7 +64,10 @@ extern "C" {
int mbedtls_aesni_has_support( unsigned int what );
/**
* \brief AES-NI AES-ECB block en(de)cryption
* \brief Internal AES-NI AES-ECB block encryption and decryption
*
* \note This function is only for internal use by other library
* functions; you must not call it directly.
*
* \param ctx AES context
* \param mode MBEDTLS_AES_ENCRYPT or MBEDTLS_AES_DECRYPT
......@@ -62,12 +77,15 @@ int mbedtls_aesni_has_support( unsigned int what );
* \return 0 on success (cannot fail)
*/
int mbedtls_aesni_crypt_ecb( mbedtls_aes_context *ctx,
int mode,
const unsigned char input[16],
unsigned char output[16] );
int mode,
const unsigned char input[16],
unsigned char output[16] );
/**
* \brief GCM multiplication: c = a * b in GF(2^128)
* \brief Internal GCM multiplication: c = a * b in GF(2^128)
*
* \note This function is only for internal use by other library
* functions; you must not call it directly.
*
* \param c Result
* \param a First operand
......@@ -77,21 +95,29 @@ int mbedtls_aesni_crypt_ecb( mbedtls_aes_context *ctx,
* elements of GF(2^128) as per the GCM spec.
*/
void mbedtls_aesni_gcm_mult( unsigned char c[16],
const unsigned char a[16],
const unsigned char b[16] );
const unsigned char a[16],
const unsigned char b[16] );
/**
* \brief Compute decryption round keys from encryption round keys
* \brief Internal round key inversion. This function computes
* decryption round keys from the encryption round keys.
*
* \note This function is only for internal use by other library
* functions; you must not call it directly.
*
* \param invkey Round keys for the equivalent inverse cipher
* \param fwdkey Original round keys (for encryption)
* \param nr Number of rounds (that is, number of round keys minus one)
*/
void mbedtls_aesni_inverse_key( unsigned char *invkey,
const unsigned char *fwdkey, int nr );
const unsigned char *fwdkey,
int nr );
/**
* \brief Perform key expansion (for encryption)
* \brief Internal key expansion for encryption
*
* \note This function is only for internal use by other library
* functions; you must not call it directly.
*
* \param rk Destination buffer where the round keys are written
* \param key Encryption key
......@@ -100,8 +126,8 @@ void mbedtls_aesni_inverse_key( unsigned char *invkey,
* \return 0 if successful, or MBEDTLS_ERR_AES_INVALID_KEY_LENGTH
*/
int mbedtls_aesni_setkey_enc( unsigned char *rk,
const unsigned char *key,
size_t bits );
const unsigned char *key,
size_t bits );
#ifdef __cplusplus
}
......
......@@ -36,16 +36,17 @@
#include <stddef.h>
/* MBEDTLS_ERR_ARC4_HW_ACCEL_FAILED is deprecated and should not be used. */
#define MBEDTLS_ERR_ARC4_HW_ACCEL_FAILED -0x0019 /**< ARC4 hardware accelerator failed. */
#if !defined(MBEDTLS_ARC4_ALT)
// Regular implementation
//
#ifdef __cplusplus
extern "C" {
#endif
#if !defined(MBEDTLS_ARC4_ALT)
// Regular implementation
//
/**
* \brief ARC4 context structure
*
......@@ -53,7 +54,7 @@ extern "C" {
* security risk. We recommend considering stronger ciphers instead.
*
*/
typedef struct
typedef struct mbedtls_arc4_context
{
int x; /*!< permutation index */
int y; /*!< permutation index */
......@@ -61,6 +62,10 @@ typedef struct
}
mbedtls_arc4_context;
#else /* MBEDTLS_ARC4_ALT */
#include "arc4_alt.h"
#endif /* MBEDTLS_ARC4_ALT */
/**
* \brief Initialize ARC4 context
*
......@@ -118,17 +123,7 @@ void mbedtls_arc4_setup( mbedtls_arc4_context *ctx, const unsigned char *key,
int mbedtls_arc4_crypt( mbedtls_arc4_context *ctx, size_t length, const unsigned char *input,
unsigned char *output );
#ifdef __cplusplus
}
#endif
#else /* MBEDTLS_ARC4_ALT */
#include "arc4_alt.h"
#endif /* MBEDTLS_ARC4_ALT */
#ifdef __cplusplus
extern "C" {
#endif
#if defined(MBEDTLS_SELF_TEST)
/**
* \brief Checkup routine
......@@ -142,6 +137,8 @@ extern "C" {
*/
int mbedtls_arc4_self_test( int verbose );
#endif /* MBEDTLS_SELF_TEST */
#ifdef __cplusplus
}
#endif
......
/**
* \file aria.h
*
* \brief ARIA block cipher
*
* The ARIA algorithm is a symmetric block cipher that can encrypt and
* decrypt information. It is defined by the Korean Agency for
* Technology and Standards (KATS) in <em>KS X 1213:2004</em> (in
* Korean, but see http://210.104.33.10/ARIA/index-e.html in English)
* and also described by the IETF in <em>RFC 5794</em>.
*/
/* Copyright (C) 2006-2018, ARM Limited, All Rights Reserved
* SPDX-License-Identifier: Apache-2.0
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may
* not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* This file is part of mbed TLS (https://tls.mbed.org)
*/
#ifndef MBEDTLS_ARIA_H
#define MBEDTLS_ARIA_H
#if !defined(MBEDTLS_CONFIG_FILE)
#include "config.h"
#else
#include MBEDTLS_CONFIG_FILE
#endif
#include <stddef.h>
#include <stdint.h>
#include "platform_util.h"
#define MBEDTLS_ARIA_ENCRYPT 1 /**< ARIA encryption. */
#define MBEDTLS_ARIA_DECRYPT 0 /**< ARIA decryption. */
#define MBEDTLS_ARIA_BLOCKSIZE 16 /**< ARIA block size in bytes. */
#define MBEDTLS_ARIA_MAX_ROUNDS 16 /**< Maxiumum number of rounds in ARIA. */
#define MBEDTLS_ARIA_MAX_KEYSIZE 32 /**< Maximum size of an ARIA key in bytes. */
#if !defined(MBEDTLS_DEPRECATED_REMOVED)
#define MBEDTLS_ERR_ARIA_INVALID_KEY_LENGTH MBEDTLS_DEPRECATED_NUMERIC_CONSTANT( -0x005C )
#endif /* !MBEDTLS_DEPRECATED_REMOVED */
#define MBEDTLS_ERR_ARIA_BAD_INPUT_DATA -0x005C /**< Bad input data. */
#define MBEDTLS_ERR_ARIA_INVALID_INPUT_LENGTH -0x005E /**< Invalid data input length. */
/* MBEDTLS_ERR_ARIA_FEATURE_UNAVAILABLE is deprecated and should not be used.
*/
#define MBEDTLS_ERR_ARIA_FEATURE_UNAVAILABLE -0x005A /**< Feature not available. For example, an unsupported ARIA key size. */
/* MBEDTLS_ERR_ARIA_HW_ACCEL_FAILED is deprecated and should not be used. */
#define MBEDTLS_ERR_ARIA_HW_ACCEL_FAILED -0x0058 /**< ARIA hardware accelerator failed. */
#if !defined(MBEDTLS_ARIA_ALT)
// Regular implementation
//
#ifdef __cplusplus
extern "C" {
#endif
/**
* \brief The ARIA context-type definition.
*/
typedef struct mbedtls_aria_context
{
unsigned char nr; /*!< The number of rounds (12, 14 or 16) */
/*! The ARIA round keys. */
uint32_t rk[MBEDTLS_ARIA_MAX_ROUNDS + 1][MBEDTLS_ARIA_BLOCKSIZE / 4];
}
mbedtls_aria_context;
#else /* MBEDTLS_ARIA_ALT */
#include "aria_alt.h"
#endif /* MBEDTLS_ARIA_ALT */
/**
* \brief This function initializes the specified ARIA context.
*
* It must be the first API called before using
* the context.
*
* \param ctx The ARIA context to initialize. This must not be \c NULL.
*/
void mbedtls_aria_init( mbedtls_aria_context *ctx );
/**
* \brief This function releases and clears the specified ARIA context.
*
* \param ctx The ARIA context to clear. This may be \c NULL, in which
* case this function returns immediately. If it is not \c NULL,
* it must point to an initialized ARIA context.
*/
void mbedtls_aria_free( mbedtls_aria_context *ctx );
/**
* \brief This function sets the encryption key.
*
* \param ctx The ARIA context to which the key should be bound.
* This must be initialized.
* \param key The encryption key. This must be a readable buffer
* of size \p keybits Bits.
* \param keybits The size of \p key in Bits. Valid options are:
* <ul><li>128 bits</li>
* <li>192 bits</li>
* <li>256 bits</li></ul>
*
* \return \c 0 on success.
* \return A negative error code on failure.
*/
int mbedtls_aria_setkey_enc( mbedtls_aria_context *ctx,
const unsigned char *key,
unsigned int keybits );
/**
* \brief This function sets the decryption key.
*
* \param ctx The ARIA context to which the key should be bound.
* This must be initialized.
* \param key The decryption key. This must be a readable buffer
* of size \p keybits Bits.
* \param keybits The size of data passed. Valid options are:
* <ul><li>128 bits</li>
* <li>192 bits</li>
* <li>256 bits</li></ul>
*
* \return \c 0 on success.
* \return A negative error code on failure.
*/
int mbedtls_aria_setkey_dec( mbedtls_aria_context *ctx,
const unsigned char *key,
unsigned int keybits );
/**
* \brief This function performs an ARIA single-block encryption or
* decryption operation.
*
* It performs encryption or decryption (depending on whether
* the key was set for encryption on decryption) on the input
* data buffer defined in the \p input parameter.
*
* mbedtls_aria_init(), and either mbedtls_aria_setkey_enc() or
* mbedtls_aria_setkey_dec() must be called before the first
* call to this API with the same context.
*
* \param ctx The ARIA context to use for encryption or decryption.
* This must be initialized and bound to a key.
* \param input The 16-Byte buffer holding the input data.
* \param output The 16-Byte buffer holding the output data.
* \return \c 0 on success.
* \return A negative error code on failure.
*/
int mbedtls_aria_crypt_ecb( mbedtls_aria_context *ctx,
const unsigned char input[MBEDTLS_ARIA_BLOCKSIZE],
unsigned char output[MBEDTLS_ARIA_BLOCKSIZE] );
#if defined(MBEDTLS_CIPHER_MODE_CBC)
/**
* \brief This function performs an ARIA-CBC encryption or decryption operation
* on full blocks.
*
* It performs the operation defined in the \p mode
* parameter (encrypt/decrypt), on the input data buffer defined in
* the \p input parameter.
*
* It can be called as many times as needed, until all the input
* data is processed. mbedtls_aria_init(), and either
* mbedtls_aria_setkey_enc() or mbedtls_aria_setkey_dec() must be called
* before the first call to this API with the same context.
*
* \note This function operates on aligned blocks, that is, the input size
* must be a multiple of the ARIA block size of 16 Bytes.
*
* \note Upon exit, the content of the IV is updated so that you can
* call the same function again on the next
* block(s) of data and get the same result as if it was
* encrypted in one call. This allows a "streaming" usage.
* If you need to retain the contents of the IV, you should
* either save it manually or use the cipher module instead.
*
*
* \param ctx The ARIA context to use for encryption or decryption.
* This must be initialized and bound to a key.
* \param mode The mode of operation. This must be either
* #MBEDTLS_ARIA_ENCRYPT for encryption, or
* #MBEDTLS_ARIA_DECRYPT for decryption.
* \param length The length of the input data in Bytes. This must be a
* multiple of the block size (16 Bytes).
* \param iv Initialization vector (updated after use).
* This must be a readable buffer of size 16 Bytes.
* \param input The buffer holding the input data. This must
* be a readable buffer of length \p length Bytes.
* \param output The buffer holding the output data. This must
* be a writable buffer of length \p length Bytes.
*
* \return \c 0 on success.
* \return A negative error code on failure.
*/
int mbedtls_aria_crypt_cbc( mbedtls_aria_context *ctx,
int mode,
size_t length,
unsigned char iv[MBEDTLS_ARIA_BLOCKSIZE],
const unsigned char *input,
unsigned char *output );
#endif /* MBEDTLS_CIPHER_MODE_CBC */
#if defined(MBEDTLS_CIPHER_MODE_CFB)
/**
* \brief This function performs an ARIA-CFB128 encryption or decryption
* operation.
*
* It performs the operation defined in the \p mode
* parameter (encrypt or decrypt), on the input data buffer
* defined in the \p input parameter.
*
* For CFB, you must set up the context with mbedtls_aria_setkey_enc(),
* regardless of whether you are performing an encryption or decryption
* operation, that is, regardless of the \p mode parameter. This is
* because CFB mode uses the same key schedule for encryption and
* decryption.
*
* \note Upon exit, the content of the IV is updated so that you can
* call the same function again on the next
* block(s) of data and get the same result as if it was
* encrypted in one call. This allows a "streaming" usage.
* If you need to retain the contents of the
* IV, you must either save it manually or use the cipher
* module instead.
*
*
* \param ctx The ARIA context to use for encryption or decryption.
* This must be initialized and bound to a key.
* \param mode The mode of operation. This must be either
* #MBEDTLS_ARIA_ENCRYPT for encryption, or
* #MBEDTLS_ARIA_DECRYPT for decryption.
* \param length The length of the input data \p input in Bytes.
* \param iv_off The offset in IV (updated after use).
* This must not be larger than 15.
* \param iv The initialization vector (updated after use).
* This must be a readable buffer of size 16 Bytes.
* \param input The buffer holding the input data. This must
* be a readable buffer of length \p length Bytes.
* \param output The buffer holding the output data. This must
* be a writable buffer of length \p length Bytes.
*
* \return \c 0 on success.
* \return A negative error code on failure.
*/
int mbedtls_aria_crypt_cfb128( mbedtls_aria_context *ctx,
int mode,
size_t length,
size_t *iv_off,
unsigned char iv[MBEDTLS_ARIA_BLOCKSIZE],
const unsigned char *input,
unsigned char *output );
#endif /* MBEDTLS_CIPHER_MODE_CFB */
#if defined(MBEDTLS_CIPHER_MODE_CTR)
/**
* \brief This function performs an ARIA-CTR encryption or decryption
* operation.
*
* This function performs the operation defined in the \p mode
* parameter (encrypt/decrypt), on the input data buffer
* defined in the \p input parameter.
*
* Due to the nature of CTR, you must use the same key schedule
* for both encryption and decryption operations. Therefore, you
* must use the context initialized with mbedtls_aria_setkey_enc()
* for both #MBEDTLS_ARIA_ENCRYPT and #MBEDTLS_ARIA_DECRYPT.
*
* \warning You must never reuse a nonce value with the same key. Doing so
* would void the encryption for the two messages encrypted with
* the same nonce and key.
*
* There are two common strategies for managing nonces with CTR:
*
* 1. You can handle everything as a single message processed over
* successive calls to this function. In that case, you want to
* set \p nonce_counter and \p nc_off to 0 for the first call, and
* then preserve the values of \p nonce_counter, \p nc_off and \p
* stream_block across calls to this function as they will be
* updated by this function.
*
* With this strategy, you must not encrypt more than 2**128
* blocks of data with the same key.
*
* 2. You can encrypt separate messages by dividing the \p
* nonce_counter buffer in two areas: the first one used for a
* per-message nonce, handled by yourself, and the second one
* updated by this function internally.
*
* For example, you might reserve the first 12 bytes for the
* per-message nonce, and the last 4 bytes for internal use. In that
* case, before calling this function on a new message you need to
* set the first 12 bytes of \p nonce_counter to your chosen nonce
* value, the last 4 to 0, and \p nc_off to 0 (which will cause \p
* stream_block to be ignored). That way, you can encrypt at most
* 2**96 messages of up to 2**32 blocks each with the same key.
*
* The per-message nonce (or information sufficient to reconstruct
* it) needs to be communicated with the ciphertext and must be unique.
* The recommended way to ensure uniqueness is to use a message
* counter. An alternative is to generate random nonces, but this
* limits the number of messages that can be securely encrypted:
* for example, with 96-bit random nonces, you should not encrypt
* more than 2**32 messages with the same key.
*
* Note that for both stategies, sizes are measured in blocks and
* that an ARIA block is 16 bytes.
*
* \warning Upon return, \p stream_block contains sensitive data. Its
* content must not be written to insecure storage and should be
* securely discarded as soon as it's no longer needed.
*
* \param ctx The ARIA context to use for encryption or decryption.
* This must be initialized and bound to a key.
* \param length The length of the input data \p input in Bytes.
* \param nc_off The offset in Bytes in the current \p stream_block,
* for resuming within the current cipher stream. The
* offset pointer should be \c 0 at the start of a
* stream. This must not be larger than \c 15 Bytes.
* \param nonce_counter The 128-bit nonce and counter. This must point to
* a read/write buffer of length \c 16 bytes.
* \param stream_block The saved stream block for resuming. This must
* point to a read/write buffer of length \c 16 bytes.
* This is overwritten by the function.
* \param input The buffer holding the input data. This must
* be a readable buffer of length \p length Bytes.
* \param output The buffer holding the output data. This must
* be a writable buffer of length \p length Bytes.
*
* \return \c 0 on success.
* \return A negative error code on failure.
*/
int mbedtls_aria_crypt_ctr( mbedtls_aria_context *ctx,
size_t length,
size_t *nc_off,
unsigned char nonce_counter[MBEDTLS_ARIA_BLOCKSIZE],
unsigned char stream_block[MBEDTLS_ARIA_BLOCKSIZE],
const unsigned char *input,
unsigned char *output );
#endif /* MBEDTLS_CIPHER_MODE_CTR */
#if defined(MBEDTLS_SELF_TEST)
/**
* \brief Checkup routine.
*
* \return \c 0 on success, or \c 1 on failure.
*/
int mbedtls_aria_self_test( int verbose );
#endif /* MBEDTLS_SELF_TEST */
#ifdef __cplusplus
}
#endif
#endif /* aria.h */
......@@ -24,193 +24,281 @@
#ifndef MBEDTLS_ASN1_WRITE_H
#define MBEDTLS_ASN1_WRITE_H
#if !defined(MBEDTLS_CONFIG_FILE)
#include "config.h"
#else
#include MBEDTLS_CONFIG_FILE
#endif
#include "asn1.h"
#define MBEDTLS_ASN1_CHK_ADD(g, f) do { if( ( ret = f ) < 0 ) return( ret ); else \
g += ret; } while( 0 )
#define MBEDTLS_ASN1_CHK_ADD(g, f) \
do \
{ \
if( ( ret = (f) ) < 0 ) \
return( ret ); \
else \
(g) += ret; \
} while( 0 )
#ifdef __cplusplus
extern "C" {
#endif
/**
* \brief Write a length field in ASN.1 format
* Note: function works backwards in data buffer
* \brief Write a length field in ASN.1 format.
*
* \param p reference to current position pointer
* \param start start of the buffer (for bounds-checking)
* \param len the length to write
* \note This function works backwards in data buffer.
*
* \return the length written or a negative error code
* \param p The reference to the current position pointer.
* \param start The start of the buffer, for bounds-checking.
* \param len The length value to write.
*
* \return The number of bytes written to \p p on success.
* \return A negative \c MBEDTLS_ERR_ASN1_XXX error code on failure.
*/
int mbedtls_asn1_write_len( unsigned char **p, unsigned char *start, size_t len );
int mbedtls_asn1_write_len( unsigned char **p, unsigned char *start,
size_t len );
/**
* \brief Write a ASN.1 tag in ASN.1 format
* Note: function works backwards in data buffer
* \brief Write an ASN.1 tag in ASN.1 format.
*
* \param p reference to current position pointer
* \param start start of the buffer (for bounds-checking)
* \param tag the tag to write
* \note This function works backwards in data buffer.
*
* \return the length written or a negative error code
* \param p The reference to the current position pointer.
* \param start The start of the buffer, for bounds-checking.
* \param tag The tag to write.
*
* \return The number of bytes written to \p p on success.
* \return A negative \c MBEDTLS_ERR_ASN1_XXX error code on failure.
*/
int mbedtls_asn1_write_tag( unsigned char **p, unsigned char *start,
unsigned char tag );
unsigned char tag );
/**
* \brief Write raw buffer data
* Note: function works backwards in data buffer
* \brief Write raw buffer data.
*
* \note This function works backwards in data buffer.
*
* \param p reference to current position pointer
* \param start start of the buffer (for bounds-checking)
* \param buf data buffer to write
* \param size length of the data buffer
* \param p The reference to the current position pointer.
* \param start The start of the buffer, for bounds-checking.
* \param buf The data buffer to write.
* \param size The length of the data buffer.
*
* \return the length written or a negative error code
* \return The number of bytes written to \p p on success.
* \return A negative \c MBEDTLS_ERR_ASN1_XXX error code on failure.
*/
int mbedtls_asn1_write_raw_buffer( unsigned char **p, unsigned char *start,
const unsigned char *buf, size_t size );
const unsigned char *buf, size_t size );
#if defined(MBEDTLS_BIGNUM_C)
/**
* \brief Write a big number (MBEDTLS_ASN1_INTEGER) in ASN.1 format
* Note: function works backwards in data buffer
* \brief Write a arbitrary-precision number (#MBEDTLS_ASN1_INTEGER)
* in ASN.1 format.
*
* \note This function works backwards in data buffer.
*
* \param p reference to current position pointer
* \param start start of the buffer (for bounds-checking)
* \param X the MPI to write
* \param p The reference to the current position pointer.
* \param start The start of the buffer, for bounds-checking.
* \param X The MPI to write.
*
* \return the length written or a negative error code
* \return The number of bytes written to \p p on success.
* \return A negative \c MBEDTLS_ERR_ASN1_XXX error code on failure.
*/
int mbedtls_asn1_write_mpi( unsigned char **p, unsigned char *start, const mbedtls_mpi *X );
int mbedtls_asn1_write_mpi( unsigned char **p, unsigned char *start,
const mbedtls_mpi *X );
#endif /* MBEDTLS_BIGNUM_C */
/**
* \brief Write a NULL tag (MBEDTLS_ASN1_NULL) with zero data in ASN.1 format
* Note: function works backwards in data buffer
* \brief Write a NULL tag (#MBEDTLS_ASN1_NULL) with zero data
* in ASN.1 format.
*
* \param p reference to current position pointer
* \param start start of the buffer (for bounds-checking)
* \note This function works backwards in data buffer.
*
* \return the length written or a negative error code
* \param p The reference to the current position pointer.
* \param start The start of the buffer, for bounds-checking.
*
* \return The number of bytes written to \p p on success.
* \return A negative \c MBEDTLS_ERR_ASN1_XXX error code on failure.
*/
int mbedtls_asn1_write_null( unsigned char **p, unsigned char *start );
/**
* \brief Write an OID tag (MBEDTLS_ASN1_OID) and data in ASN.1 format
* Note: function works backwards in data buffer
* \brief Write an OID tag (#MBEDTLS_ASN1_OID) and data
* in ASN.1 format.
*
* \note This function works backwards in data buffer.
*
* \param p reference to current position pointer
* \param start start of the buffer (for bounds-checking)
* \param oid the OID to write
* \param oid_len length of the OID
* \param p The reference to the current position pointer.
* \param start The start of the buffer, for bounds-checking.
* \param oid The OID to write.
* \param oid_len The length of the OID.
*
* \return the length written or a negative error code
* \return The number of bytes written to \p p on success.
* \return A negative \c MBEDTLS_ERR_ASN1_XXX error code on failure.
*/
int mbedtls_asn1_write_oid( unsigned char **p, unsigned char *start,
const char *oid, size_t oid_len );
const char *oid, size_t oid_len );
/**
* \brief Write an AlgorithmIdentifier sequence in ASN.1 format
* Note: function works backwards in data buffer
* \brief Write an AlgorithmIdentifier sequence in ASN.1 format.
*
* \note This function works backwards in data buffer.
*
* \param p reference to current position pointer
* \param start start of the buffer (for bounds-checking)
* \param oid the OID of the algorithm
* \param oid_len length of the OID
* \param par_len length of parameters, which must be already written.
* \param p The reference to the current position pointer.
* \param start The start of the buffer, for bounds-checking.
* \param oid The OID of the algorithm to write.
* \param oid_len The length of the algorithm's OID.
* \param par_len The length of the parameters, which must be already written.
* If 0, NULL parameters are added
*
* \return the length written or a negative error code
* \return The number of bytes written to \p p on success.
* \return A negative \c MBEDTLS_ERR_ASN1_XXX error code on failure.
*/
int mbedtls_asn1_write_algorithm_identifier( unsigned char **p, unsigned char *start,
const char *oid, size_t oid_len,
size_t par_len );
int mbedtls_asn1_write_algorithm_identifier( unsigned char **p,
unsigned char *start,
const char *oid, size_t oid_len,
size_t par_len );
/**
* \brief Write a boolean tag (MBEDTLS_ASN1_BOOLEAN) and value in ASN.1 format
* Note: function works backwards in data buffer
* \brief Write a boolean tag (#MBEDTLS_ASN1_BOOLEAN) and value
* in ASN.1 format.
*
* \param p reference to current position pointer
* \param start start of the buffer (for bounds-checking)
* \param boolean 0 or 1
* \note This function works backwards in data buffer.
*
* \return the length written or a negative error code
* \param p The reference to the current position pointer.
* \param start The start of the buffer, for bounds-checking.
* \param boolean The boolean value to write, either \c 0 or \c 1.
*
* \return The number of bytes written to \p p on success.
* \return A negative \c MBEDTLS_ERR_ASN1_XXX error code on failure.
*/
int mbedtls_asn1_write_bool( unsigned char **p, unsigned char *start, int boolean );
int mbedtls_asn1_write_bool( unsigned char **p, unsigned char *start,
int boolean );
/**
* \brief Write an int tag (MBEDTLS_ASN1_INTEGER) and value in ASN.1 format
* Note: function works backwards in data buffer
* \brief Write an int tag (#MBEDTLS_ASN1_INTEGER) and value
* in ASN.1 format.
*
* \note This function works backwards in data buffer.
*
* \param p reference to current position pointer
* \param start start of the buffer (for bounds-checking)
* \param val the integer value
* \param p The reference to the current position pointer.
* \param start The start of the buffer, for bounds-checking.
* \param val The integer value to write.
*
* \return the length written or a negative error code
* \return The number of bytes written to \p p on success.
* \return A negative \c MBEDTLS_ERR_ASN1_XXX error code on failure.
*/
int mbedtls_asn1_write_int( unsigned char **p, unsigned char *start, int val );
/**
* \brief Write a printable string tag (MBEDTLS_ASN1_PRINTABLE_STRING) and
* value in ASN.1 format
* Note: function works backwards in data buffer
* \brief Write a string in ASN.1 format using a specific
* string encoding tag.
* \note This function works backwards in data buffer.
*
* \param p The reference to the current position pointer.
* \param start The start of the buffer, for bounds-checking.
* \param tag The string encoding tag to write, e.g.
* #MBEDTLS_ASN1_UTF8_STRING.
* \param text The string to write.
* \param text_len The length of \p text in bytes (which might
* be strictly larger than the number of characters).
*
* \return The number of bytes written to \p p on success.
* \return A negative error code on failure.
*/
int mbedtls_asn1_write_tagged_string( unsigned char **p, unsigned char *start,
int tag, const char *text,
size_t text_len );
/**
* \brief Write a string in ASN.1 format using the PrintableString
* string encoding tag (#MBEDTLS_ASN1_PRINTABLE_STRING).
*
* \note This function works backwards in data buffer.
*
* \param p reference to current position pointer
* \param start start of the buffer (for bounds-checking)
* \param text the text to write
* \param text_len length of the text
* \param p The reference to the current position pointer.
* \param start The start of the buffer, for bounds-checking.
* \param text The string to write.
* \param text_len The length of \p text in bytes (which might
* be strictly larger than the number of characters).
*
* \return the length written or a negative error code
* \return The number of bytes written to \p p on success.
* \return A negative error code on failure.
*/
int mbedtls_asn1_write_printable_string( unsigned char **p, unsigned char *start,
const char *text, size_t text_len );
int mbedtls_asn1_write_printable_string( unsigned char **p,
unsigned char *start,
const char *text, size_t text_len );
/**
* \brief Write an IA5 string tag (MBEDTLS_ASN1_IA5_STRING) and
* value in ASN.1 format
* Note: function works backwards in data buffer
* \brief Write a UTF8 string in ASN.1 format using the UTF8String
* string encoding tag (#MBEDTLS_ASN1_PRINTABLE_STRING).
*
* \param p reference to current position pointer
* \param start start of the buffer (for bounds-checking)
* \param text the text to write
* \param text_len length of the text
* \note This function works backwards in data buffer.
*
* \return the length written or a negative error code
* \param p The reference to the current position pointer.
* \param start The start of the buffer, for bounds-checking.
* \param text The string to write.
* \param text_len The length of \p text in bytes (which might
* be strictly larger than the number of characters).
*
* \return The number of bytes written to \p p on success.
* \return A negative error code on failure.
*/
int mbedtls_asn1_write_utf8_string( unsigned char **p, unsigned char *start,
const char *text, size_t text_len );
/**
* \brief Write a string in ASN.1 format using the IA5String
* string encoding tag (#MBEDTLS_ASN1_IA5_STRING).
*
* \note This function works backwards in data buffer.
*
* \param p The reference to the current position pointer.
* \param start The start of the buffer, for bounds-checking.
* \param text The string to write.
* \param text_len The length of \p text in bytes (which might
* be strictly larger than the number of characters).
*
* \return The number of bytes written to \p p on success.
* \return A negative error code on failure.
*/
int mbedtls_asn1_write_ia5_string( unsigned char **p, unsigned char *start,
const char *text, size_t text_len );
const char *text, size_t text_len );
/**
* \brief Write a bitstring tag (MBEDTLS_ASN1_BIT_STRING) and
* value in ASN.1 format
* Note: function works backwards in data buffer
* \brief Write a bitstring tag (#MBEDTLS_ASN1_BIT_STRING) and
* value in ASN.1 format.
*
* \note This function works backwards in data buffer.
*
* \param p reference to current position pointer
* \param start start of the buffer (for bounds-checking)
* \param buf the bitstring
* \param bits the total number of bits in the bitstring
* \param p The reference to the current position pointer.
* \param start The start of the buffer, for bounds-checking.
* \param buf The bitstring to write.
* \param bits The total number of bits in the bitstring.
*
* \return the length written or a negative error code
* \return The number of bytes written to \p p on success.
* \return A negative error code on failure.
*/
int mbedtls_asn1_write_bitstring( unsigned char **p, unsigned char *start,
const unsigned char *buf, size_t bits );
const unsigned char *buf, size_t bits );
/**
* \brief Write an octet string tag (MBEDTLS_ASN1_OCTET_STRING) and
* value in ASN.1 format
* Note: function works backwards in data buffer
* \brief Write an octet string tag (#MBEDTLS_ASN1_OCTET_STRING)
* and value in ASN.1 format.
*
* \note This function works backwards in data buffer.
*
* \param p reference to current position pointer
* \param start start of the buffer (for bounds-checking)
* \param buf data buffer to write
* \param size length of the data buffer
* \param p The reference to the current position pointer.
* \param start The start of the buffer, for bounds-checking.
* \param buf The buffer holding the data to write.
* \param size The length of the data buffer \p buf.
*
* \return the length written or a negative error code
* \return The number of bytes written to \p p on success.
* \return A negative error code on failure.
*/
int mbedtls_asn1_write_octet_string( unsigned char **p, unsigned char *start,
const unsigned char *buf, size_t size );
const unsigned char *buf, size_t size );
/**
* \brief Create or find a specific named_data entry for writing in a
......@@ -218,15 +306,16 @@ int mbedtls_asn1_write_octet_string( unsigned char **p, unsigned char *start,
* a new entry is added to the head of the list.
* Warning: Destructive behaviour for the val data!
*
* \param list Pointer to the location of the head of the list to seek
* through (will be updated in case of a new entry)
* \param oid The OID to look for
* \param oid_len Size of the OID
* \param val Data to store (can be NULL if you want to fill it by hand)
* \param val_len Minimum length of the data buffer needed
* \param list The pointer to the location of the head of the list to seek
* through (will be updated in case of a new entry).
* \param oid The OID to look for.
* \param oid_len The size of the OID.
* \param val The data to store (can be \c NULL if you want to fill
* it by hand).
* \param val_len The minimum length of the data buffer needed.
*
* \return NULL if if there was a memory allocation error, or a pointer
* to the new / existing entry.
* \return A pointer to the new / existing entry on success.
* \return \c NULL if if there was a memory allocation error.
*/
mbedtls_asn1_named_data *mbedtls_asn1_store_named_data( mbedtls_asn1_named_data **list,
const char *oid, size_t oid_len,
......
......@@ -24,6 +24,12 @@
#ifndef MBEDTLS_BASE64_H
#define MBEDTLS_BASE64_H
#if !defined(MBEDTLS_CONFIG_FILE)
#include "config.h"
#else
#include MBEDTLS_CONFIG_FILE
#endif
#include <stddef.h>
#define MBEDTLS_ERR_BASE64_BUFFER_TOO_SMALL -0x002A /**< Output buffer too small. */
......@@ -75,6 +81,7 @@ int mbedtls_base64_encode( unsigned char *dst, size_t dlen, size_t *olen,
int mbedtls_base64_decode( unsigned char *dst, size_t dlen, size_t *olen,
const unsigned char *src, size_t slen );
#if defined(MBEDTLS_SELF_TEST)
/**
* \brief Checkup routine
*
......@@ -82,6 +89,8 @@ int mbedtls_base64_decode( unsigned char *dst, size_t dlen, size_t *olen,
*/
int mbedtls_base64_self_test( int verbose );
#endif /* MBEDTLS_SELF_TEST */
#ifdef __cplusplus
}
#endif
......
......@@ -46,7 +46,12 @@
#define MBEDTLS_ERR_MPI_NOT_ACCEPTABLE -0x000E /**< The input arguments are not acceptable. */
#define MBEDTLS_ERR_MPI_ALLOC_FAILED -0x0010 /**< Memory allocation failed. */
#define MBEDTLS_MPI_CHK(f) do { if( ( ret = f ) != 0 ) goto cleanup; } while( 0 )
#define MBEDTLS_MPI_CHK(f) \
do \
{ \
if( ( ret = (f) ) != 0 ) \
goto cleanup; \
} while( 0 )
/*
* Maximum size MPIs are allowed to grow to in number of limbs.
......@@ -177,7 +182,7 @@ extern "C" {
/**
* \brief MPI structure
*/
typedef struct
typedef struct mbedtls_mpi
{
int s; /*!< integer sign */
size_t n; /*!< total # of limbs */
......@@ -186,90 +191,115 @@ typedef struct
mbedtls_mpi;
/**
* \brief Initialize one MPI (make internal references valid)
* This just makes it ready to be set or freed,
* \brief Initialize an MPI context.
*
* This makes the MPI ready to be set or freed,
* but does not define a value for the MPI.
*
* \param X One MPI to initialize.
* \param X The MPI context to initialize. This must not be \c NULL.
*/
void mbedtls_mpi_init( mbedtls_mpi *X );
/**
* \brief Unallocate one MPI
* \brief This function frees the components of an MPI context.
*
* \param X One MPI to unallocate.
* \param X The MPI context to be cleared. This may be \c NULL,
* in which case this function is a no-op. If it is
* not \c NULL, it must point to an initialized MPI.
*/
void mbedtls_mpi_free( mbedtls_mpi *X );
/**
* \brief Enlarge to the specified number of limbs
* \brief Enlarge an MPI to the specified number of limbs.
*
* \note This function does nothing if the MPI is
* already large enough.
*
* \param X MPI to grow
* \param nblimbs The target number of limbs
* \param X The MPI to grow. It must be initialized.
* \param nblimbs The target number of limbs.
*
* \return 0 if successful,
* MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed
* \return \c 0 if successful.
* \return #MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed.
* \return Another negative error code on other kinds of failure.
*/
int mbedtls_mpi_grow( mbedtls_mpi *X, size_t nblimbs );
/**
* \brief Resize down, keeping at least the specified number of limbs
* \brief This function resizes an MPI downwards, keeping at least the
* specified number of limbs.
*
* If \c X is smaller than \c nblimbs, it is resized up
* instead.
*
* \param X MPI to shrink
* \param nblimbs The minimum number of limbs to keep
* \param X The MPI to shrink. This must point to an initialized MPI.
* \param nblimbs The minimum number of limbs to keep.
*
* \return 0 if successful,
* MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed
* \return \c 0 if successful.
* \return #MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed
* (this can only happen when resizing up).
* \return Another negative error code on other kinds of failure.
*/
int mbedtls_mpi_shrink( mbedtls_mpi *X, size_t nblimbs );
/**
* \brief Copy the contents of Y into X
* \brief Make a copy of an MPI.
*
* \param X Destination MPI
* \param Y Source MPI
* \param X The destination MPI. This must point to an initialized MPI.
* \param Y The source MPI. This must point to an initialized MPI.
*
* \return 0 if successful,
* MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed
* \note The limb-buffer in the destination MPI is enlarged
* if necessary to hold the value in the source MPI.
*
* \return \c 0 if successful.
* \return #MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed.
* \return Another negative error code on other kinds of failure.
*/
int mbedtls_mpi_copy( mbedtls_mpi *X, const mbedtls_mpi *Y );
/**
* \brief Swap the contents of X and Y
* \brief Swap the contents of two MPIs.
*
* \param X First MPI value
* \param Y Second MPI value
* \param X The first MPI. It must be initialized.
* \param Y The second MPI. It must be initialized.
*/
void mbedtls_mpi_swap( mbedtls_mpi *X, mbedtls_mpi *Y );
/**
* \brief Safe conditional assignement X = Y if assign is 1
*
* \param X MPI to conditionally assign to
* \param Y Value to be assigned
* \param assign 1: perform the assignment, 0: keep X's original value
* \brief Perform a safe conditional copy of MPI which doesn't
* reveal whether the condition was true or not.
*
* \return 0 if successful,
* MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed,
* \param X The MPI to conditionally assign to. This must point
* to an initialized MPI.
* \param Y The MPI to be assigned from. This must point to an
* initialized MPI.
* \param assign The condition deciding whether to perform the
* assignment or not. Possible values:
* * \c 1: Perform the assignment `X = Y`.
* * \c 0: Keep the original value of \p X.
*
* \note This function is equivalent to
* if( assign ) mbedtls_mpi_copy( X, Y );
* `if( assign ) mbedtls_mpi_copy( X, Y );`
* except that it avoids leaking any information about whether
* the assignment was done or not (the above code may leak
* information through branch prediction and/or memory access
* patterns analysis).
*
* \return \c 0 if successful.
* \return #MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed.
* \return Another negative error code on other kinds of failure.
*/
int mbedtls_mpi_safe_cond_assign( mbedtls_mpi *X, const mbedtls_mpi *Y, unsigned char assign );
/**
* \brief Safe conditional swap X <-> Y if swap is 1
*
* \param X First mbedtls_mpi value
* \param Y Second mbedtls_mpi value
* \param assign 1: perform the swap, 0: keep X and Y's original values
* \brief Perform a safe conditional swap which doesn't
* reveal whether the condition was true or not.
*
* \return 0 if successful,
* MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed,
* \param X The first MPI. This must be initialized.
* \param Y The second MPI. This must be initialized.
* \param assign The condition deciding whether to perform
* the swap or not. Possible values:
* * \c 1: Swap the values of \p X and \p Y.
* * \c 0: Keep the original values of \p X and \p Y.
*
* \note This function is equivalent to
* if( assign ) mbedtls_mpi_swap( X, Y );
......@@ -277,415 +307,512 @@ int mbedtls_mpi_safe_cond_assign( mbedtls_mpi *X, const mbedtls_mpi *Y, unsigned
* the assignment was done or not (the above code may leak
* information through branch prediction and/or memory access
* patterns analysis).
*
* \return \c 0 if successful.
* \return #MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed.
* \return Another negative error code on other kinds of failure.
*
*/
int mbedtls_mpi_safe_cond_swap( mbedtls_mpi *X, mbedtls_mpi *Y, unsigned char assign );
/**
* \brief Set value from integer
* \brief Store integer value in MPI.
*
* \param X MPI to set
* \param z Value to use
* \param X The MPI to set. This must be initialized.
* \param z The value to use.
*
* \return 0 if successful,
* MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed
* \return \c 0 if successful.
* \return #MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed.
* \return Another negative error code on other kinds of failure.
*/
int mbedtls_mpi_lset( mbedtls_mpi *X, mbedtls_mpi_sint z );
/**
* \brief Get a specific bit from X
* \brief Get a specific bit from an MPI.
*
* \param X MPI to use
* \param pos Zero-based index of the bit in X
* \param X The MPI to query. This must be initialized.
* \param pos Zero-based index of the bit to query.
*
* \return Either a 0 or a 1
* \return \c 0 or \c 1 on success, depending on whether bit \c pos
* of \c X is unset or set.
* \return A negative error code on failure.
*/
int mbedtls_mpi_get_bit( const mbedtls_mpi *X, size_t pos );
/**
* \brief Set a bit of X to a specific value of 0 or 1
* \brief Modify a specific bit in an MPI.
*
* \note Will grow X if necessary to set a bit to 1 in a not yet
* existing limb. Will not grow if bit should be set to 0
* \note This function will grow the target MPI if necessary to set a
* bit to \c 1 in a not yet existing limb. It will not grow if
* the bit should be set to \c 0.
*
* \param X MPI to use
* \param pos Zero-based index of the bit in X
* \param val The value to set the bit to (0 or 1)
* \param X The MPI to modify. This must be initialized.
* \param pos Zero-based index of the bit to modify.
* \param val The desired value of bit \c pos: \c 0 or \c 1.
*
* \return 0 if successful,
* MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed,
* MBEDTLS_ERR_MPI_BAD_INPUT_DATA if val is not 0 or 1
* \return \c 0 if successful.
* \return #MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed.
* \return Another negative error code on other kinds of failure.
*/
int mbedtls_mpi_set_bit( mbedtls_mpi *X, size_t pos, unsigned char val );
/**
* \brief Return the number of zero-bits before the least significant
* '1' bit
* \brief Return the number of bits of value \c 0 before the
* least significant bit of value \c 1.
*
* Note: Thus also the zero-based index of the least significant '1' bit
* \note This is the same as the zero-based index of
* the least significant bit of value \c 1.
*
* \param X MPI to use
* \param X The MPI to query.
*
* \return The number of bits of value \c 0 before the least significant
* bit of value \c 1 in \p X.
*/
size_t mbedtls_mpi_lsb( const mbedtls_mpi *X );
/**
* \brief Return the number of bits up to and including the most
* significant '1' bit'
* significant bit of value \c 1.
*
* * \note This is same as the one-based index of the most
* significant bit of value \c 1.
*
* Note: Thus also the one-based index of the most significant '1' bit
* \param X The MPI to query. This must point to an initialized MPI.
*
* \param X MPI to use
* \return The number of bits up to and including the most
* significant bit of value \c 1.
*/
size_t mbedtls_mpi_bitlen( const mbedtls_mpi *X );
/**
* \brief Return the total size in bytes
* \brief Return the total size of an MPI value in bytes.
*
* \param X The MPI to use. This must point to an initialized MPI.
*
* \note The value returned by this function may be less than
* the number of bytes used to store \p X internally.
* This happens if and only if there are trailing bytes
* of value zero.
*
* \param X MPI to use
* \return The least number of bytes capable of storing
* the absolute value of \p X.
*/
size_t mbedtls_mpi_size( const mbedtls_mpi *X );
/**
* \brief Import from an ASCII string
* \brief Import an MPI from an ASCII string.
*
* \param X Destination MPI
* \param radix Input numeric base
* \param s Null-terminated string buffer
* \param X The destination MPI. This must point to an initialized MPI.
* \param radix The numeric base of the input string.
* \param s Null-terminated string buffer.
*
* \return 0 if successful, or a MBEDTLS_ERR_MPI_XXX error code
* \return \c 0 if successful.
* \return A negative error code on failure.
*/
int mbedtls_mpi_read_string( mbedtls_mpi *X, int radix, const char *s );
/**
* \brief Export into an ASCII string
* \brief Export an MPI to an ASCII string.
*
* \param X Source MPI
* \param radix Output numeric base
* \param buf Buffer to write the string to
* \param buflen Length of buf
* \param olen Length of the string written, including final NUL byte
* \param X The source MPI. This must point to an initialized MPI.
* \param radix The numeric base of the output string.
* \param buf The buffer to write the string to. This must be writable
* buffer of length \p buflen Bytes.
* \param buflen The available size in Bytes of \p buf.
* \param olen The address at which to store the length of the string
* written, including the final \c NULL byte. This must
* not be \c NULL.
*
* \return 0 if successful, or a MBEDTLS_ERR_MPI_XXX error code.
* *olen is always updated to reflect the amount
* of data that has (or would have) been written.
* \note You can call this function with `buflen == 0` to obtain the
* minimum required buffer size in `*olen`.
*
* \note Call this function with buflen = 0 to obtain the
* minimum required buffer size in *olen.
* \return \c 0 if successful.
* \return #MBEDTLS_ERR_MPI_BUFFER_TOO_SMALL if the target buffer \p buf
* is too small to hold the value of \p X in the desired base.
* In this case, `*olen` is nonetheless updated to contain the
* size of \p buf required for a successful call.
* \return Another negative error code on different kinds of failure.
*/
int mbedtls_mpi_write_string( const mbedtls_mpi *X, int radix,
char *buf, size_t buflen, size_t *olen );
#if defined(MBEDTLS_FS_IO)
/**
* \brief Read MPI from a line in an opened file
* \brief Read an MPI from a line in an opened file.
*
* \param X Destination MPI
* \param radix Input numeric base
* \param fin Input file handle
*
* \return 0 if successful, MBEDTLS_ERR_MPI_BUFFER_TOO_SMALL if
* the file read buffer is too small or a
* MBEDTLS_ERR_MPI_XXX error code
* \param X The destination MPI. This must point to an initialized MPI.
* \param radix The numeric base of the string representation used
* in the source line.
* \param fin The input file handle to use. This must not be \c NULL.
*
* \note On success, this function advances the file stream
* to the end of the current line or to EOF.
*
* The function returns 0 on an empty line.
* The function returns \c 0 on an empty line.
*
* Leading whitespaces are ignored, as is a
* '0x' prefix for radix 16.
* '0x' prefix for radix \c 16.
*
* \return \c 0 if successful.
* \return #MBEDTLS_ERR_MPI_BUFFER_TOO_SMALL if the file read buffer
* is too small.
* \return Another negative error code on failure.
*/
int mbedtls_mpi_read_file( mbedtls_mpi *X, int radix, FILE *fin );
/**
* \brief Write X into an opened file, or stdout if fout is NULL
*
* \param p Prefix, can be NULL
* \param X Source MPI
* \param radix Output numeric base
* \param fout Output file handle (can be NULL)
* \brief Export an MPI into an opened file.
*
* \return 0 if successful, or a MBEDTLS_ERR_MPI_XXX error code
* \param p A string prefix to emit prior to the MPI data.
* For example, this might be a label, or "0x" when
* printing in base \c 16. This may be \c NULL if no prefix
* is needed.
* \param X The source MPI. This must point to an initialized MPI.
* \param radix The numeric base to be used in the emitted string.
* \param fout The output file handle. This may be \c NULL, in which case
* the output is written to \c stdout.
*
* \note Set fout == NULL to print X on the console.
* \return \c 0 if successful.
* \return A negative error code on failure.
*/
int mbedtls_mpi_write_file( const char *p, const mbedtls_mpi *X, int radix, FILE *fout );
int mbedtls_mpi_write_file( const char *p, const mbedtls_mpi *X,
int radix, FILE *fout );
#endif /* MBEDTLS_FS_IO */
/**
* \brief Import X from unsigned binary data, big endian
* \brief Import an MPI from unsigned big endian binary data.
*
* \param X Destination MPI
* \param buf Input buffer
* \param buflen Input buffer size
* \param X The destination MPI. This must point to an initialized MPI.
* \param buf The input buffer. This must be a readable buffer of length
* \p buflen Bytes.
* \param buflen The length of the input buffer \p p in Bytes.
*
* \return 0 if successful,
* MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed
* \return \c 0 if successful.
* \return #MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed.
* \return Another negative error code on different kinds of failure.
*/
int mbedtls_mpi_read_binary( mbedtls_mpi *X, const unsigned char *buf, size_t buflen );
int mbedtls_mpi_read_binary( mbedtls_mpi *X, const unsigned char *buf,
size_t buflen );
/**
* \brief Export X into unsigned binary data, big endian.
* Always fills the whole buffer, which will start with zeros
* if the number is smaller.
* \brief Export an MPI into unsigned big endian binary data
* of fixed size.
*
* \param X Source MPI
* \param buf Output buffer
* \param buflen Output buffer size
* \param X The source MPI. This must point to an initialized MPI.
* \param buf The output buffer. This must be a writable buffer of length
* \p buflen Bytes.
* \param buflen The size of the output buffer \p buf in Bytes.
*
* \return 0 if successful,
* MBEDTLS_ERR_MPI_BUFFER_TOO_SMALL if buf isn't large enough
* \return \c 0 if successful.
* \return #MBEDTLS_ERR_MPI_BUFFER_TOO_SMALL if \p buf isn't
* large enough to hold the value of \p X.
* \return Another negative error code on different kinds of failure.
*/
int mbedtls_mpi_write_binary( const mbedtls_mpi *X, unsigned char *buf, size_t buflen );
int mbedtls_mpi_write_binary( const mbedtls_mpi *X, unsigned char *buf,
size_t buflen );
/**
* \brief Left-shift: X <<= count
* \brief Perform a left-shift on an MPI: X <<= count
*
* \param X MPI to shift
* \param count Amount to shift
* \param X The MPI to shift. This must point to an initialized MPI.
* \param count The number of bits to shift by.
*
* \return 0 if successful,
* MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed
* \return \c 0 if successful.
* \return #MBEDTLS_ERR_MPI_ALLOC_FAILED if a memory allocation failed.
* \return Another negative error code on different kinds of failure.
*/
int mbedtls_mpi_shift_l( mbedtls_mpi *X, size_t count );
/**
* \brief Right-shift: X >>= count
* \brief Perform a right-shift on an MPI: X >>= count
*
* \param X MPI to shift
* \param count Amount to shift
* \param X The MPI to shift. This must point to an initialized MPI.
* \param count The number of bits to shift by.
*
* \return 0 if successful,
* MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed
* \return \c 0 if successful.
* \return #MBEDTLS_ERR_MPI_ALLOC_FAILED if a memory allocation failed.
* \return Another negative error code on different kinds of failure.
*/
int mbedtls_mpi_shift_r( mbedtls_mpi *X, size_t count );
/**
* \brief Compare unsigned values
* \brief Compare the absolute values of two MPIs.
*
* \param X Left-hand MPI
* \param Y Right-hand MPI
* \param X The left-hand MPI. This must point to an initialized MPI.
* \param Y The right-hand MPI. This must point to an initialized MPI.
*
* \return 1 if |X| is greater than |Y|,
* -1 if |X| is lesser than |Y| or
* 0 if |X| is equal to |Y|
* \return \c 1 if `|X|` is greater than `|Y|`.
* \return \c -1 if `|X|` is lesser than `|Y|`.
* \return \c 0 if `|X|` is equal to `|Y|`.
*/
int mbedtls_mpi_cmp_abs( const mbedtls_mpi *X, const mbedtls_mpi *Y );
/**
* \brief Compare signed values
* \brief Compare two MPIs.
*
* \param X Left-hand MPI
* \param Y Right-hand MPI
* \param X The left-hand MPI. This must point to an initialized MPI.
* \param Y The right-hand MPI. This must point to an initialized MPI.
*
* \return 1 if X is greater than Y,
* -1 if X is lesser than Y or
* 0 if X is equal to Y
* \return \c 1 if \p X is greater than \p Y.
* \return \c -1 if \p X is lesser than \p Y.
* \return \c 0 if \p X is equal to \p Y.
*/
int mbedtls_mpi_cmp_mpi( const mbedtls_mpi *X, const mbedtls_mpi *Y );
/**
* \brief Compare signed values
* \brief Compare an MPI with an integer.
*
* \param X Left-hand MPI
* \param z The integer value to compare to
* \param X The left-hand MPI. This must point to an initialized MPI.
* \param z The integer value to compare \p X to.
*
* \return 1 if X is greater than z,
* -1 if X is lesser than z or
* 0 if X is equal to z
* \return \c 1 if \p X is greater than \p z.
* \return \c -1 if \p X is lesser than \p z.
* \return \c 0 if \p X is equal to \p z.
*/
int mbedtls_mpi_cmp_int( const mbedtls_mpi *X, mbedtls_mpi_sint z );
/**
* \brief Unsigned addition: X = |A| + |B|
* \brief Perform an unsigned addition of MPIs: X = |A| + |B|
*
* \param X Destination MPI
* \param A Left-hand MPI
* \param B Right-hand MPI
* \param X The destination MPI. This must point to an initialized MPI.
* \param A The first summand. This must point to an initialized MPI.
* \param B The second summand. This must point to an initialized MPI.
*
* \return 0 if successful,
* MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed
* \return \c 0 if successful.
* \return #MBEDTLS_ERR_MPI_ALLOC_FAILED if a memory allocation failed.
* \return Another negative error code on different kinds of failure.
*/
int mbedtls_mpi_add_abs( mbedtls_mpi *X, const mbedtls_mpi *A, const mbedtls_mpi *B );
int mbedtls_mpi_add_abs( mbedtls_mpi *X, const mbedtls_mpi *A,
const mbedtls_mpi *B );
/**
* \brief Unsigned subtraction: X = |A| - |B|
* \brief Perform an unsigned subtraction of MPIs: X = |A| - |B|
*
* \param X Destination MPI
* \param A Left-hand MPI
* \param B Right-hand MPI
* \param X The destination MPI. This must point to an initialized MPI.
* \param A The minuend. This must point to an initialized MPI.
* \param B The subtrahend. This must point to an initialized MPI.
*
* \return \c 0 if successful.
* \return #MBEDTLS_ERR_MPI_NEGATIVE_VALUE if \p B is greater than \p A.
* \return Another negative error code on different kinds of failure.
*
* \return 0 if successful,
* MBEDTLS_ERR_MPI_NEGATIVE_VALUE if B is greater than A
*/
int mbedtls_mpi_sub_abs( mbedtls_mpi *X, const mbedtls_mpi *A, const mbedtls_mpi *B );
int mbedtls_mpi_sub_abs( mbedtls_mpi *X, const mbedtls_mpi *A,
const mbedtls_mpi *B );
/**
* \brief Signed addition: X = A + B
* \brief Perform a signed addition of MPIs: X = A + B
*
* \param X Destination MPI
* \param A Left-hand MPI
* \param B Right-hand MPI
* \param X The destination MPI. This must point to an initialized MPI.
* \param A The first summand. This must point to an initialized MPI.
* \param B The second summand. This must point to an initialized MPI.
*
* \return 0 if successful,
* MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed
* \return \c 0 if successful.
* \return #MBEDTLS_ERR_MPI_ALLOC_FAILED if a memory allocation failed.
* \return Another negative error code on different kinds of failure.
*/
int mbedtls_mpi_add_mpi( mbedtls_mpi *X, const mbedtls_mpi *A, const mbedtls_mpi *B );
int mbedtls_mpi_add_mpi( mbedtls_mpi *X, const mbedtls_mpi *A,
const mbedtls_mpi *B );
/**
* \brief Signed subtraction: X = A - B
* \brief Perform a signed subtraction of MPIs: X = A - B
*
* \param X Destination MPI
* \param A Left-hand MPI
* \param B Right-hand MPI
* \param X The destination MPI. This must point to an initialized MPI.
* \param A The minuend. This must point to an initialized MPI.
* \param B The subtrahend. This must point to an initialized MPI.
*
* \return 0 if successful,
* MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed
* \return \c 0 if successful.
* \return #MBEDTLS_ERR_MPI_ALLOC_FAILED if a memory allocation failed.
* \return Another negative error code on different kinds of failure.
*/
int mbedtls_mpi_sub_mpi( mbedtls_mpi *X, const mbedtls_mpi *A, const mbedtls_mpi *B );
int mbedtls_mpi_sub_mpi( mbedtls_mpi *X, const mbedtls_mpi *A,
const mbedtls_mpi *B );
/**
* \brief Signed addition: X = A + b
* \brief Perform a signed addition of an MPI and an integer: X = A + b
*
* \param X Destination MPI
* \param A Left-hand MPI
* \param b The integer value to add
* \param X The destination MPI. This must point to an initialized MPI.
* \param A The first summand. This must point to an initialized MPI.
* \param b The second summand.
*
* \return 0 if successful,
* MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed
* \return \c 0 if successful.
* \return #MBEDTLS_ERR_MPI_ALLOC_FAILED if a memory allocation failed.
* \return Another negative error code on different kinds of failure.
*/
int mbedtls_mpi_add_int( mbedtls_mpi *X, const mbedtls_mpi *A, mbedtls_mpi_sint b );
int mbedtls_mpi_add_int( mbedtls_mpi *X, const mbedtls_mpi *A,
mbedtls_mpi_sint b );
/**
* \brief Signed subtraction: X = A - b
* \brief Perform a signed subtraction of an MPI and an integer:
* X = A - b
*
* \param X Destination MPI
* \param A Left-hand MPI
* \param b The integer value to subtract
* \param X The destination MPI. This must point to an initialized MPI.
* \param A The minuend. This must point to an initialized MPI.
* \param b The subtrahend.
*
* \return 0 if successful,
* MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed
* \return \c 0 if successful.
* \return #MBEDTLS_ERR_MPI_ALLOC_FAILED if a memory allocation failed.
* \return Another negative error code on different kinds of failure.
*/
int mbedtls_mpi_sub_int( mbedtls_mpi *X, const mbedtls_mpi *A, mbedtls_mpi_sint b );
int mbedtls_mpi_sub_int( mbedtls_mpi *X, const mbedtls_mpi *A,
mbedtls_mpi_sint b );
/**
* \brief Baseline multiplication: X = A * B
* \brief Perform a multiplication of two MPIs: X = A * B
*
* \param X The destination MPI. This must point to an initialized MPI.
* \param A The first factor. This must point to an initialized MPI.
* \param B The second factor. This must point to an initialized MPI.
*
* \param X Destination MPI
* \param A Left-hand MPI
* \param B Right-hand MPI
* \return \c 0 if successful.
* \return #MBEDTLS_ERR_MPI_ALLOC_FAILED if a memory allocation failed.
* \return Another negative error code on different kinds of failure.
*
* \return 0 if successful,
* MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed
*/
int mbedtls_mpi_mul_mpi( mbedtls_mpi *X, const mbedtls_mpi *A, const mbedtls_mpi *B );
int mbedtls_mpi_mul_mpi( mbedtls_mpi *X, const mbedtls_mpi *A,
const mbedtls_mpi *B );
/**
* \brief Baseline multiplication: X = A * b
* \brief Perform a multiplication of an MPI with an unsigned integer:
* X = A * b
*
* \param X Destination MPI
* \param A Left-hand MPI
* \param b The unsigned integer value to multiply with
* \param X The destination MPI. This must point to an initialized MPI.
* \param A The first factor. This must point to an initialized MPI.
* \param b The second factor.
*
* \note b is unsigned
* \return \c 0 if successful.
* \return #MBEDTLS_ERR_MPI_ALLOC_FAILED if a memory allocation failed.
* \return Another negative error code on different kinds of failure.
*
* \return 0 if successful,
* MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed
*/
int mbedtls_mpi_mul_int( mbedtls_mpi *X, const mbedtls_mpi *A, mbedtls_mpi_uint b );
int mbedtls_mpi_mul_int( mbedtls_mpi *X, const mbedtls_mpi *A,
mbedtls_mpi_uint b );
/**
* \brief Division by mbedtls_mpi: A = Q * B + R
* \brief Perform a division with remainder of two MPIs:
* A = Q * B + R
*
* \param Q Destination MPI for the quotient
* \param R Destination MPI for the rest value
* \param A Left-hand MPI
* \param B Right-hand MPI
* \param Q The destination MPI for the quotient.
* This may be \c NULL if the value of the
* quotient is not needed.
* \param R The destination MPI for the remainder value.
* This may be \c NULL if the value of the
* remainder is not needed.
* \param A The dividend. This must point to an initialized MPi.
* \param B The divisor. This must point to an initialized MPI.
*
* \return 0 if successful,
* MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed,
* MBEDTLS_ERR_MPI_DIVISION_BY_ZERO if B == 0
*
* \note Either Q or R can be NULL.
* \return \c 0 if successful.
* \return #MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed.
* \return #MBEDTLS_ERR_MPI_DIVISION_BY_ZERO if \p B equals zero.
* \return Another negative error code on different kinds of failure.
*/
int mbedtls_mpi_div_mpi( mbedtls_mpi *Q, mbedtls_mpi *R, const mbedtls_mpi *A, const mbedtls_mpi *B );
int mbedtls_mpi_div_mpi( mbedtls_mpi *Q, mbedtls_mpi *R, const mbedtls_mpi *A,
const mbedtls_mpi *B );
/**
* \brief Division by int: A = Q * b + R
*
* \param Q Destination MPI for the quotient
* \param R Destination MPI for the rest value
* \param A Left-hand MPI
* \param b Integer to divide by
* \brief Perform a division with remainder of an MPI by an integer:
* A = Q * b + R
*
* \return 0 if successful,
* MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed,
* MBEDTLS_ERR_MPI_DIVISION_BY_ZERO if b == 0
* \param Q The destination MPI for the quotient.
* This may be \c NULL if the value of the
* quotient is not needed.
* \param R The destination MPI for the remainder value.
* This may be \c NULL if the value of the
* remainder is not needed.
* \param A The dividend. This must point to an initialized MPi.
* \param b The divisor.
*
* \note Either Q or R can be NULL.
* \return \c 0 if successful.
* \return #MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed.
* \return #MBEDTLS_ERR_MPI_DIVISION_BY_ZERO if \p b equals zero.
* \return Another negative error code on different kinds of failure.
*/
int mbedtls_mpi_div_int( mbedtls_mpi *Q, mbedtls_mpi *R, const mbedtls_mpi *A, mbedtls_mpi_sint b );
int mbedtls_mpi_div_int( mbedtls_mpi *Q, mbedtls_mpi *R, const mbedtls_mpi *A,
mbedtls_mpi_sint b );
/**
* \brief Modulo: R = A mod B
* \brief Perform a modular reduction. R = A mod B
*
* \param R Destination MPI for the rest value
* \param A Left-hand MPI
* \param B Right-hand MPI
* \param R The destination MPI for the residue value.
* This must point to an initialized MPI.
* \param A The MPI to compute the residue of.
* This must point to an initialized MPI.
* \param B The base of the modular reduction.
* This must point to an initialized MPI.
*
* \return \c 0 if successful.
* \return #MBEDTLS_ERR_MPI_ALLOC_FAILED if a memory allocation failed.
* \return #MBEDTLS_ERR_MPI_DIVISION_BY_ZERO if \p B equals zero.
* \return #MBEDTLS_ERR_MPI_NEGATIVE_VALUE if \p B is negative.
* \return Another negative error code on different kinds of failure.
*
* \return 0 if successful,
* MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed,
* MBEDTLS_ERR_MPI_DIVISION_BY_ZERO if B == 0,
* MBEDTLS_ERR_MPI_NEGATIVE_VALUE if B < 0
*/
int mbedtls_mpi_mod_mpi( mbedtls_mpi *R, const mbedtls_mpi *A, const mbedtls_mpi *B );
int mbedtls_mpi_mod_mpi( mbedtls_mpi *R, const mbedtls_mpi *A,
const mbedtls_mpi *B );
/**
* \brief Modulo: r = A mod b
* \brief Perform a modular reduction with respect to an integer.
* r = A mod b
*
* \param r Destination mbedtls_mpi_uint
* \param A Left-hand MPI
* \param b Integer to divide by
* \param r The address at which to store the residue.
* This must not be \c NULL.
* \param A The MPI to compute the residue of.
* This must point to an initialized MPi.
* \param b The integer base of the modular reduction.
*
* \return 0 if successful,
* MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed,
* MBEDTLS_ERR_MPI_DIVISION_BY_ZERO if b == 0,
* MBEDTLS_ERR_MPI_NEGATIVE_VALUE if b < 0
* \return \c 0 if successful.
* \return #MBEDTLS_ERR_MPI_ALLOC_FAILED if a memory allocation failed.
* \return #MBEDTLS_ERR_MPI_DIVISION_BY_ZERO if \p b equals zero.
* \return #MBEDTLS_ERR_MPI_NEGATIVE_VALUE if \p b is negative.
* \return Another negative error code on different kinds of failure.
*/
int mbedtls_mpi_mod_int( mbedtls_mpi_uint *r, const mbedtls_mpi *A, mbedtls_mpi_sint b );
int mbedtls_mpi_mod_int( mbedtls_mpi_uint *r, const mbedtls_mpi *A,
mbedtls_mpi_sint b );
/**
* \brief Sliding-window exponentiation: X = A^E mod N
*
* \param X Destination MPI
* \param A Left-hand MPI
* \param E Exponent MPI
* \param N Modular MPI
* \param _RR Speed-up MPI used for recalculations
* \brief Perform a sliding-window exponentiation: X = A^E mod N
*
* \return 0 if successful,
* MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed,
* MBEDTLS_ERR_MPI_BAD_INPUT_DATA if N is negative or even or
* if E is negative
* \param X The destination MPI. This must point to an initialized MPI.
* \param A The base of the exponentiation.
* This must point to an initialized MPI.
* \param E The exponent MPI. This must point to an initialized MPI.
* \param N The base for the modular reduction. This must point to an
* initialized MPI.
* \param _RR A helper MPI depending solely on \p N which can be used to
* speed-up multiple modular exponentiations for the same value
* of \p N. This may be \c NULL. If it is not \c NULL, it must
* point to an initialized MPI. If it hasn't been used after
* the call to mbedtls_mpi_init(), this function will compute
* the helper value and store it in \p _RR for reuse on
* subsequent calls to this function. Otherwise, the function
* will assume that \p _RR holds the helper value set by a
* previous call to mbedtls_mpi_exp_mod(), and reuse it.
*
* \return \c 0 if successful.
* \return #MBEDTLS_ERR_MPI_ALLOC_FAILED if a memory allocation failed.
* \return #MBEDTLS_ERR_MPI_BAD_INPUT_DATA if \c N is negative or
* even, or if \c E is negative.
* \return Another negative error code on different kinds of failures.
*
* \note _RR is used to avoid re-computing R*R mod N across
* multiple calls, which speeds up things a bit. It can
* be set to NULL if the extra performance is unneeded.
*/
int mbedtls_mpi_exp_mod( mbedtls_mpi *X, const mbedtls_mpi *A, const mbedtls_mpi *E, const mbedtls_mpi *N, mbedtls_mpi *_RR );
int mbedtls_mpi_exp_mod( mbedtls_mpi *X, const mbedtls_mpi *A,
const mbedtls_mpi *E, const mbedtls_mpi *N,
mbedtls_mpi *_RR );
/**
* \brief Fill an MPI X with size bytes of random
* \brief Fill an MPI with a number of random bytes.
*
* \param X Destination MPI
* \param size Size in bytes
* \param f_rng RNG function
* \param p_rng RNG parameter
* \param X The destination MPI. This must point to an initialized MPI.
* \param size The number of random bytes to generate.
* \param f_rng The RNG function to use. This must not be \c NULL.
* \param p_rng The RNG parameter to be passed to \p f_rng. This may be
* \c NULL if \p f_rng doesn't need a context argument.
*
* \return 0 if successful,
* MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed
* \return \c 0 if successful.
* \return #MBEDTLS_ERR_MPI_ALLOC_FAILED if a memory allocation failed.
* \return Another negative error code on failure.
*
* \note The bytes obtained from the PRNG are interpreted
* \note The bytes obtained from the RNG are interpreted
* as a big-endian representation of an MPI; this can
* be relevant in applications like deterministic ECDSA.
*/
......@@ -694,64 +821,135 @@ int mbedtls_mpi_fill_random( mbedtls_mpi *X, size_t size,
void *p_rng );
/**
* \brief Greatest common divisor: G = gcd(A, B)
*
* \param G Destination MPI
* \param A Left-hand MPI
* \param B Right-hand MPI
*
* \return 0 if successful,
* MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed
*/
int mbedtls_mpi_gcd( mbedtls_mpi *G, const mbedtls_mpi *A, const mbedtls_mpi *B );
/**
* \brief Modular inverse: X = A^-1 mod N
* \brief Compute the greatest common divisor: G = gcd(A, B)
*
* \param X Destination MPI
* \param A Left-hand MPI
* \param N Right-hand MPI
* \param G The destination MPI. This must point to an initialized MPI.
* \param A The first operand. This must point to an initialized MPI.
* \param B The second operand. This must point to an initialized MPI.
*
* \return 0 if successful,
* MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed,
* MBEDTLS_ERR_MPI_BAD_INPUT_DATA if N is <= 1,
MBEDTLS_ERR_MPI_NOT_ACCEPTABLE if A has no inverse mod N.
* \return \c 0 if successful.
* \return #MBEDTLS_ERR_MPI_ALLOC_FAILED if a memory allocation failed.
* \return Another negative error code on different kinds of failure.
*/
int mbedtls_mpi_inv_mod( mbedtls_mpi *X, const mbedtls_mpi *A, const mbedtls_mpi *N );
int mbedtls_mpi_gcd( mbedtls_mpi *G, const mbedtls_mpi *A,
const mbedtls_mpi *B );
/**
* \brief Miller-Rabin primality test
* \brief Compute the modular inverse: X = A^-1 mod N
*
* \param X MPI to check
* \param f_rng RNG function
* \param p_rng RNG parameter
* \param X The destination MPI. This must point to an initialized MPI.
* \param A The MPI to calculate the modular inverse of. This must point
* to an initialized MPI.
* \param N The base of the modular inversion. This must point to an
* initialized MPI.
*
* \return 0 if successful (probably prime),
* MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed,
* MBEDTLS_ERR_MPI_NOT_ACCEPTABLE if X is not prime
* \return \c 0 if successful.
* \return #MBEDTLS_ERR_MPI_ALLOC_FAILED if a memory allocation failed.
* \return #MBEDTLS_ERR_MPI_BAD_INPUT_DATA if \p N is less than
* or equal to one.
* \return #MBEDTLS_ERR_MPI_NOT_ACCEPTABLE if \p has no modular inverse
* with respect to \p N.
*/
int mbedtls_mpi_is_prime( const mbedtls_mpi *X,
int (*f_rng)(void *, unsigned char *, size_t),
void *p_rng );
int mbedtls_mpi_inv_mod( mbedtls_mpi *X, const mbedtls_mpi *A,
const mbedtls_mpi *N );
#if !defined(MBEDTLS_DEPRECATED_REMOVED)
#if defined(MBEDTLS_DEPRECATED_WARNING)
#define MBEDTLS_DEPRECATED __attribute__((deprecated))
#else
#define MBEDTLS_DEPRECATED
#endif
/**
* \brief Prime number generation
*
* \param X Destination MPI
* \param nbits Required size of X in bits
* ( 3 <= nbits <= MBEDTLS_MPI_MAX_BITS )
* \param dh_flag If 1, then (X-1)/2 will be prime too
* \param f_rng RNG function
* \param p_rng RNG parameter
*
* \return 0 if successful (probably prime),
* MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed,
* MBEDTLS_ERR_MPI_BAD_INPUT_DATA if nbits is < 3
*/
int mbedtls_mpi_gen_prime( mbedtls_mpi *X, size_t nbits, int dh_flag,
* \brief Perform a Miller-Rabin primality test with error
* probability of 2<sup>-80</sup>.
*
* \deprecated Superseded by mbedtls_mpi_is_prime_ext() which allows
* specifying the number of Miller-Rabin rounds.
*
* \param X The MPI to check for primality.
* This must point to an initialized MPI.
* \param f_rng The RNG function to use. This must not be \c NULL.
* \param p_rng The RNG parameter to be passed to \p f_rng.
* This may be \c NULL if \p f_rng doesn't use a
* context parameter.
*
* \return \c 0 if successful, i.e. \p X is probably prime.
* \return #MBEDTLS_ERR_MPI_ALLOC_FAILED if a memory allocation failed.
* \return #MBEDTLS_ERR_MPI_NOT_ACCEPTABLE if \p X is not prime.
* \return Another negative error code on other kinds of failure.
*/
MBEDTLS_DEPRECATED int mbedtls_mpi_is_prime( const mbedtls_mpi *X,
int (*f_rng)(void *, unsigned char *, size_t),
void *p_rng );
#undef MBEDTLS_DEPRECATED
#endif /* !MBEDTLS_DEPRECATED_REMOVED */
/**
* \brief Miller-Rabin primality test.
*
* \warning If \p X is potentially generated by an adversary, for example
* when validating cryptographic parameters that you didn't
* generate yourself and that are supposed to be prime, then
* \p rounds should be at least the half of the security
* strength of the cryptographic algorithm. On the other hand,
* if \p X is chosen uniformly or non-adversially (as is the
* case when mbedtls_mpi_gen_prime calls this function), then
* \p rounds can be much lower.
*
* \param X The MPI to check for primality.
* This must point to an initialized MPI.
* \param rounds The number of bases to perform the Miller-Rabin primality
* test for. The probability of returning 0 on a composite is
* at most 2<sup>-2*\p rounds</sup>.
* \param f_rng The RNG function to use. This must not be \c NULL.
* \param p_rng The RNG parameter to be passed to \p f_rng.
* This may be \c NULL if \p f_rng doesn't use
* a context parameter.
*
* \return \c 0 if successful, i.e. \p X is probably prime.
* \return #MBEDTLS_ERR_MPI_ALLOC_FAILED if a memory allocation failed.
* \return #MBEDTLS_ERR_MPI_NOT_ACCEPTABLE if \p X is not prime.
* \return Another negative error code on other kinds of failure.
*/
int mbedtls_mpi_is_prime_ext( const mbedtls_mpi *X, int rounds,
int (*f_rng)(void *, unsigned char *, size_t),
void *p_rng );
/**
* \brief Flags for mbedtls_mpi_gen_prime()
*
* Each of these flags is a constraint on the result X returned by
* mbedtls_mpi_gen_prime().
*/
typedef enum {
MBEDTLS_MPI_GEN_PRIME_FLAG_DH = 0x0001, /**< (X-1)/2 is prime too */
MBEDTLS_MPI_GEN_PRIME_FLAG_LOW_ERR = 0x0002, /**< lower error rate from 2<sup>-80</sup> to 2<sup>-128</sup> */
} mbedtls_mpi_gen_prime_flag_t;
/**
* \brief Generate a prime number.
*
* \param X The destination MPI to store the generated prime in.
* This must point to an initialized MPi.
* \param nbits The required size of the destination MPI in bits.
* This must be between \c 3 and #MBEDTLS_MPI_MAX_BITS.
* \param flags A mask of flags of type #mbedtls_mpi_gen_prime_flag_t.
* \param f_rng The RNG function to use. This must not be \c NULL.
* \param p_rng The RNG parameter to be passed to \p f_rng.
* This may be \c NULL if \p f_rng doesn't use
* a context parameter.
*
* \return \c 0 if successful, in which case \p X holds a
* probably prime number.
* \return #MBEDTLS_ERR_MPI_ALLOC_FAILED if a memory allocation failed.
* \return #MBEDTLS_ERR_MPI_BAD_INPUT_DATA if `nbits` is not between
* \c 3 and #MBEDTLS_MPI_MAX_BITS.
*/
int mbedtls_mpi_gen_prime( mbedtls_mpi *X, size_t nbits, int flags,
int (*f_rng)(void *, unsigned char *, size_t),
void *p_rng );
#if defined(MBEDTLS_SELF_TEST)
/**
* \brief Checkup routine
*
......@@ -759,6 +957,8 @@ int mbedtls_mpi_gen_prime( mbedtls_mpi *X, size_t nbits, int dh_flag,
*/
int mbedtls_mpi_self_test( int verbose );
#endif /* MBEDTLS_SELF_TEST */
#ifdef __cplusplus
}
#endif
......
......@@ -33,6 +33,8 @@
#include <stddef.h>
#include <stdint.h>
#include "platform_util.h"
#define MBEDTLS_BLOWFISH_ENCRYPT 1
#define MBEDTLS_BLOWFISH_DECRYPT 0
#define MBEDTLS_BLOWFISH_MAX_KEY_BITS 448
......@@ -40,63 +42,87 @@
#define MBEDTLS_BLOWFISH_ROUNDS 16 /**< Rounds to use. When increasing this value, make sure to extend the initialisation vectors */
#define MBEDTLS_BLOWFISH_BLOCKSIZE 8 /* Blowfish uses 64 bit blocks */
#define MBEDTLS_ERR_BLOWFISH_INVALID_KEY_LENGTH -0x0016 /**< Invalid key length. */
#define MBEDTLS_ERR_BLOWFISH_HW_ACCEL_FAILED -0x0017 /**< Blowfish hardware accelerator failed. */
#define MBEDTLS_ERR_BLOWFISH_INVALID_INPUT_LENGTH -0x0018 /**< Invalid data input length. */
#if !defined(MBEDTLS_DEPRECATED_REMOVED)
#define MBEDTLS_ERR_BLOWFISH_INVALID_KEY_LENGTH MBEDTLS_DEPRECATED_NUMERIC_CONSTANT( -0x0016 )
#endif /* !MBEDTLS_DEPRECATED_REMOVED */
#define MBEDTLS_ERR_BLOWFISH_BAD_INPUT_DATA -0x0016 /**< Bad input data. */
#if !defined(MBEDTLS_BLOWFISH_ALT)
// Regular implementation
//
#define MBEDTLS_ERR_BLOWFISH_INVALID_INPUT_LENGTH -0x0018 /**< Invalid data input length. */
/* MBEDTLS_ERR_BLOWFISH_HW_ACCEL_FAILED is deprecated and should not be used.
*/
#define MBEDTLS_ERR_BLOWFISH_HW_ACCEL_FAILED -0x0017 /**< Blowfish hardware accelerator failed. */
#ifdef __cplusplus
extern "C" {
#endif
#if !defined(MBEDTLS_BLOWFISH_ALT)
// Regular implementation
//
/**
* \brief Blowfish context structure
*/
typedef struct
typedef struct mbedtls_blowfish_context
{
uint32_t P[MBEDTLS_BLOWFISH_ROUNDS + 2]; /*!< Blowfish round keys */
uint32_t S[4][256]; /*!< key dependent S-boxes */
}
mbedtls_blowfish_context;
#else /* MBEDTLS_BLOWFISH_ALT */
#include "blowfish_alt.h"
#endif /* MBEDTLS_BLOWFISH_ALT */
/**
* \brief Initialize Blowfish context
* \brief Initialize a Blowfish context.
*
* \param ctx Blowfish context to be initialized
* \param ctx The Blowfish context to be initialized.
* This must not be \c NULL.
*/
void mbedtls_blowfish_init( mbedtls_blowfish_context *ctx );
/**
* \brief Clear Blowfish context
* \brief Clear a Blowfish context.
*
* \param ctx Blowfish context to be cleared
* \param ctx The Blowfish context to be cleared.
* This may be \c NULL, in which case this function
* returns immediately. If it is not \c NULL, it must
* point to an initialized Blowfish context.
*/
void mbedtls_blowfish_free( mbedtls_blowfish_context *ctx );
/**
* \brief Blowfish key schedule
* \brief Perform a Blowfish key schedule operation.
*
* \param ctx Blowfish context to be initialized
* \param key encryption key
* \param keybits must be between 32 and 448 bits
* \param ctx The Blowfish context to perform the key schedule on.
* \param key The encryption key. This must be a readable buffer of
* length \p keybits Bits.
* \param keybits The length of \p key in Bits. This must be between
* \c 32 and \c 448 and a multiple of \c 8.
*
* \return 0 if successful, or MBEDTLS_ERR_BLOWFISH_INVALID_KEY_LENGTH
* \return \c 0 if successful.
* \return A negative error code on failure.
*/
int mbedtls_blowfish_setkey( mbedtls_blowfish_context *ctx, const unsigned char *key,
unsigned int keybits );
/**
* \brief Blowfish-ECB block encryption/decryption
* \brief Perform a Blowfish-ECB block encryption/decryption operation.
*
* \param ctx Blowfish context
* \param mode MBEDTLS_BLOWFISH_ENCRYPT or MBEDTLS_BLOWFISH_DECRYPT
* \param input 8-byte input block
* \param output 8-byte output block
* \param ctx The Blowfish context to use. This must be initialized
* and bound to a key.
* \param mode The mode of operation. Possible values are
* #MBEDTLS_BLOWFISH_ENCRYPT for encryption, or
* #MBEDTLS_BLOWFISH_DECRYPT for decryption.
* \param input The input block. This must be a readable buffer
* of size \c 8 Bytes.
* \param output The output block. This must be a writable buffer
* of size \c 8 Bytes.
*
* \return 0 if successful
* \return \c 0 if successful.
* \return A negative error code on failure.
*/
int mbedtls_blowfish_crypt_ecb( mbedtls_blowfish_context *ctx,
int mode,
......@@ -105,9 +131,7 @@ int mbedtls_blowfish_crypt_ecb( mbedtls_blowfish_context *ctx,
#if defined(MBEDTLS_CIPHER_MODE_CBC)
/**
* \brief Blowfish-CBC buffer encryption/decryption
* Length should be a multiple of the block
* size (8 bytes)
* \brief Perform a Blowfish-CBC buffer encryption/decryption operation.
*
* \note Upon exit, the content of the IV is updated so that you can
* call the function same function again on the following
......@@ -117,15 +141,22 @@ int mbedtls_blowfish_crypt_ecb( mbedtls_blowfish_context *ctx,
* IV, you should either save it manually or use the cipher
* module instead.
*
* \param ctx Blowfish context
* \param mode MBEDTLS_BLOWFISH_ENCRYPT or MBEDTLS_BLOWFISH_DECRYPT
* \param length length of the input data
* \param iv initialization vector (updated after use)
* \param input buffer holding the input data
* \param output buffer holding the output data
* \param ctx The Blowfish context to use. This must be initialized
* and bound to a key.
* \param mode The mode of operation. Possible values are
* #MBEDTLS_BLOWFISH_ENCRYPT for encryption, or
* #MBEDTLS_BLOWFISH_DECRYPT for decryption.
* \param length The length of the input data in Bytes. This must be
* multiple of \c 8.
* \param iv The initialization vector. This must be a read/write buffer
* of length \c 8 Bytes. It is updated by this function.
* \param input The input data. This must be a readable buffer of length
* \p length Bytes.
* \param output The output data. This must be a writable buffer of length
* \p length Bytes.
*
* \return 0 if successful, or
* MBEDTLS_ERR_BLOWFISH_INVALID_INPUT_LENGTH
* \return \c 0 if successful.
* \return A negative error code on failure.
*/
int mbedtls_blowfish_crypt_cbc( mbedtls_blowfish_context *ctx,
int mode,
......@@ -137,7 +168,7 @@ int mbedtls_blowfish_crypt_cbc( mbedtls_blowfish_context *ctx,
#if defined(MBEDTLS_CIPHER_MODE_CFB)
/**
* \brief Blowfish CFB buffer encryption/decryption.
* \brief Perform a Blowfish CFB buffer encryption/decryption operation.
*
* \note Upon exit, the content of the IV is updated so that you can
* call the function same function again on the following
......@@ -147,15 +178,25 @@ int mbedtls_blowfish_crypt_cbc( mbedtls_blowfish_context *ctx,
* IV, you should either save it manually or use the cipher
* module instead.
*
* \param ctx Blowfish context
* \param mode MBEDTLS_BLOWFISH_ENCRYPT or MBEDTLS_BLOWFISH_DECRYPT
* \param length length of the input data
* \param iv_off offset in IV (updated after use)
* \param iv initialization vector (updated after use)
* \param input buffer holding the input data
* \param output buffer holding the output data
* \param ctx The Blowfish context to use. This must be initialized
* and bound to a key.
* \param mode The mode of operation. Possible values are
* #MBEDTLS_BLOWFISH_ENCRYPT for encryption, or
* #MBEDTLS_BLOWFISH_DECRYPT for decryption.
* \param length The length of the input data in Bytes.
* \param iv_off The offset in the initialiation vector.
* The value pointed to must be smaller than \c 8 Bytes.
* It is updated by this function to support the aforementioned
* streaming usage.
* \param iv The initialization vector. This must be a read/write buffer
* of size \c 8 Bytes. It is updated after use.
* \param input The input data. This must be a readable buffer of length
* \p length Bytes.
* \param output The output data. This must be a writable buffer of length
* \p length Bytes.
*
* \return 0 if successful
* \return \c 0 if successful.
* \return A negative error code on failure.
*/
int mbedtls_blowfish_crypt_cfb64( mbedtls_blowfish_context *ctx,
int mode,
......@@ -168,22 +209,67 @@ int mbedtls_blowfish_crypt_cfb64( mbedtls_blowfish_context *ctx,
#if defined(MBEDTLS_CIPHER_MODE_CTR)
/**
* \brief Blowfish-CTR buffer encryption/decryption
* \brief Perform a Blowfish-CTR buffer encryption/decryption operation.
*
* \warning You must never reuse a nonce value with the same key. Doing so
* would void the encryption for the two messages encrypted with
* the same nonce and key.
*
* There are two common strategies for managing nonces with CTR:
*
* 1. You can handle everything as a single message processed over
* successive calls to this function. In that case, you want to
* set \p nonce_counter and \p nc_off to 0 for the first call, and
* then preserve the values of \p nonce_counter, \p nc_off and \p
* stream_block across calls to this function as they will be
* updated by this function.
*
* With this strategy, you must not encrypt more than 2**64
* blocks of data with the same key.
*
* 2. You can encrypt separate messages by dividing the \p
* nonce_counter buffer in two areas: the first one used for a
* per-message nonce, handled by yourself, and the second one
* updated by this function internally.
*
* For example, you might reserve the first 4 bytes for the
* per-message nonce, and the last 4 bytes for internal use. In that
* case, before calling this function on a new message you need to
* set the first 4 bytes of \p nonce_counter to your chosen nonce
* value, the last 4 to 0, and \p nc_off to 0 (which will cause \p
* stream_block to be ignored). That way, you can encrypt at most
* 2**32 messages of up to 2**32 blocks each with the same key.
*
* Warning: You have to keep the maximum use of your counter in mind!
* The per-message nonce (or information sufficient to reconstruct
* it) needs to be communicated with the ciphertext and must be unique.
* The recommended way to ensure uniqueness is to use a message
* counter.
*
* \param ctx Blowfish context
* \param length The length of the data
* Note that for both stategies, sizes are measured in blocks and
* that a Blowfish block is 8 bytes.
*
* \warning Upon return, \p stream_block contains sensitive data. Its
* content must not be written to insecure storage and should be
* securely discarded as soon as it's no longer needed.
*
* \param ctx The Blowfish context to use. This must be initialized
* and bound to a key.
* \param length The length of the input data in Bytes.
* \param nc_off The offset in the current stream_block (for resuming
* within current cipher stream). The offset pointer to
* should be 0 at the start of a stream.
* \param nonce_counter The 64-bit nonce and counter.
* \param stream_block The saved stream-block for resuming. Is overwritten
* by the function.
* \param input The input data stream
* \param output The output data stream
*
* \return 0 if successful
* within current cipher stream). The offset pointer
* should be \c 0 at the start of a stream and must be
* smaller than \c 8. It is updated by this function.
* \param nonce_counter The 64-bit nonce and counter. This must point to a
* read/write buffer of length \c 8 Bytes.
* \param stream_block The saved stream-block for resuming. This must point to
* a read/write buffer of length \c 8 Bytes.
* \param input The input data. This must be a readable buffer of
* length \p length Bytes.
* \param output The output data. This must be a writable buffer of
* length \p length Bytes.
*
* \return \c 0 if successful.
* \return A negative error code on failure.
*/
int mbedtls_blowfish_crypt_ctr( mbedtls_blowfish_context *ctx,
size_t length,
......@@ -198,8 +284,4 @@ int mbedtls_blowfish_crypt_ctr( mbedtls_blowfish_context *ctx,
}
#endif
#else /* MBEDTLS_BLOWFISH_ALT */
#include "blowfish_alt.h"
#endif /* MBEDTLS_BLOWFISH_ALT */
#endif /* blowfish.h */
......@@ -571,9 +571,8 @@
#endif /* TriCore */
/*
* gcc -O0 by default uses r7 for the frame pointer, so it complains about our
* use of r7 below, unless -fomit-frame-pointer is passed. Unfortunately,
* passing that option is not easy when building with yotta.
* Note, gcc -O0 by default uses r7 for the frame pointer, so it complains about
* our use of r7 below, unless -fomit-frame-pointer is passed.
*
* On the other hand, -fomit-frame-pointer is implied by any -Ox options with
* x !=0, which we can detect using __OPTIMIZE__ (which is also defined by
......@@ -643,6 +642,24 @@
"r6", "r7", "r8", "r9", "cc" \
);
#elif (__ARM_ARCH >= 6) && \
defined (__ARM_FEATURE_DSP) && (__ARM_FEATURE_DSP == 1)
#define MULADDC_INIT \
asm(
#define MULADDC_CORE \
"ldr r0, [%0], #4 \n\t" \
"ldr r1, [%1] \n\t" \
"umaal r1, %2, %3, r0 \n\t" \
"str r1, [%1], #4 \n\t"
#define MULADDC_STOP \
: "=r" (s), "=r" (d), "=r" (c) \
: "r" (b), "0" (s), "1" (d), "2" (c) \
: "r0", "r1", "memory" \
);
#else
#define MULADDC_INIT \
......
......@@ -33,78 +33,107 @@
#include <stddef.h>
#include <stdint.h>
#include "platform_util.h"
#define MBEDTLS_CAMELLIA_ENCRYPT 1
#define MBEDTLS_CAMELLIA_DECRYPT 0
#define MBEDTLS_ERR_CAMELLIA_INVALID_KEY_LENGTH -0x0024 /**< Invalid key length. */
#define MBEDTLS_ERR_CAMELLIA_INVALID_INPUT_LENGTH -0x0026 /**< Invalid data input length. */
#define MBEDTLS_ERR_CAMELLIA_HW_ACCEL_FAILED -0x0027 /**< Camellia hardware accelerator failed. */
#if !defined(MBEDTLS_DEPRECATED_REMOVED)
#define MBEDTLS_ERR_CAMELLIA_INVALID_KEY_LENGTH MBEDTLS_DEPRECATED_NUMERIC_CONSTANT( -0x0024 )
#endif /* !MBEDTLS_DEPRECATED_REMOVED */
#define MBEDTLS_ERR_CAMELLIA_BAD_INPUT_DATA -0x0024 /**< Bad input data. */
#if !defined(MBEDTLS_CAMELLIA_ALT)
// Regular implementation
//
#define MBEDTLS_ERR_CAMELLIA_INVALID_INPUT_LENGTH -0x0026 /**< Invalid data input length. */
/* MBEDTLS_ERR_CAMELLIA_HW_ACCEL_FAILED is deprecated and should not be used.
*/
#define MBEDTLS_ERR_CAMELLIA_HW_ACCEL_FAILED -0x0027 /**< Camellia hardware accelerator failed. */
#ifdef __cplusplus
extern "C" {
#endif
#if !defined(MBEDTLS_CAMELLIA_ALT)
// Regular implementation
//
/**
* \brief CAMELLIA context structure
*/
typedef struct
typedef struct mbedtls_camellia_context
{
int nr; /*!< number of rounds */
uint32_t rk[68]; /*!< CAMELLIA round keys */
}
mbedtls_camellia_context;
#else /* MBEDTLS_CAMELLIA_ALT */
#include "camellia_alt.h"
#endif /* MBEDTLS_CAMELLIA_ALT */
/**
* \brief Initialize CAMELLIA context
* \brief Initialize a CAMELLIA context.
*
* \param ctx CAMELLIA context to be initialized
* \param ctx The CAMELLIA context to be initialized.
* This must not be \c NULL.
*/
void mbedtls_camellia_init( mbedtls_camellia_context *ctx );
/**
* \brief Clear CAMELLIA context
* \brief Clear a CAMELLIA context.
*
* \param ctx CAMELLIA context to be cleared
* \param ctx The CAMELLIA context to be cleared. This may be \c NULL,
* in which case this function returns immediately. If it is not
* \c NULL, it must be initialized.
*/
void mbedtls_camellia_free( mbedtls_camellia_context *ctx );
/**
* \brief CAMELLIA key schedule (encryption)
* \brief Perform a CAMELLIA key schedule operation for encryption.
*
* \param ctx CAMELLIA context to be initialized
* \param key encryption key
* \param keybits must be 128, 192 or 256
* \param ctx The CAMELLIA context to use. This must be initialized.
* \param key The encryption key to use. This must be a readable buffer
* of size \p keybits Bits.
* \param keybits The length of \p key in Bits. This must be either \c 128,
* \c 192 or \c 256.
*
* \return 0 if successful, or MBEDTLS_ERR_CAMELLIA_INVALID_KEY_LENGTH
* \return \c 0 if successful.
* \return A negative error code on failure.
*/
int mbedtls_camellia_setkey_enc( mbedtls_camellia_context *ctx, const unsigned char *key,
unsigned int keybits );
int mbedtls_camellia_setkey_enc( mbedtls_camellia_context *ctx,
const unsigned char *key,
unsigned int keybits );
/**
* \brief CAMELLIA key schedule (decryption)
* \brief Perform a CAMELLIA key schedule operation for decryption.
*
* \param ctx CAMELLIA context to be initialized
* \param key decryption key
* \param keybits must be 128, 192 or 256
* \param ctx The CAMELLIA context to use. This must be initialized.
* \param key The decryption key. This must be a readable buffer
* of size \p keybits Bits.
* \param keybits The length of \p key in Bits. This must be either \c 128,
* \c 192 or \c 256.
*
* \return 0 if successful, or MBEDTLS_ERR_CAMELLIA_INVALID_KEY_LENGTH
* \return \c 0 if successful.
* \return A negative error code on failure.
*/
int mbedtls_camellia_setkey_dec( mbedtls_camellia_context *ctx, const unsigned char *key,
unsigned int keybits );
int mbedtls_camellia_setkey_dec( mbedtls_camellia_context *ctx,
const unsigned char *key,
unsigned int keybits );
/**
* \brief CAMELLIA-ECB block encryption/decryption
* \brief Perform a CAMELLIA-ECB block encryption/decryption operation.
*
* \param ctx CAMELLIA context
* \param mode MBEDTLS_CAMELLIA_ENCRYPT or MBEDTLS_CAMELLIA_DECRYPT
* \param input 16-byte input block
* \param output 16-byte output block
* \param ctx The CAMELLIA context to use. This must be initialized
* and bound to a key.
* \param mode The mode of operation. This must be either
* #MBEDTLS_CAMELLIA_ENCRYPT or #MBEDTLS_CAMELLIA_DECRYPT.
* \param input The input block. This must be a readable buffer
* of size \c 16 Bytes.
* \param output The output block. This must be a writable buffer
* of size \c 16 Bytes.
*
* \return 0 if successful
* \return \c 0 if successful.
* \return A negative error code on failure.
*/
int mbedtls_camellia_crypt_ecb( mbedtls_camellia_context *ctx,
int mode,
......@@ -113,9 +142,7 @@ int mbedtls_camellia_crypt_ecb( mbedtls_camellia_context *ctx,
#if defined(MBEDTLS_CIPHER_MODE_CBC)
/**
* \brief CAMELLIA-CBC buffer encryption/decryption
* Length should be a multiple of the block
* size (16 bytes)
* \brief Perform a CAMELLIA-CBC buffer encryption/decryption operation.
*
* \note Upon exit, the content of the IV is updated so that you can
* call the function same function again on the following
......@@ -125,15 +152,22 @@ int mbedtls_camellia_crypt_ecb( mbedtls_camellia_context *ctx,
* IV, you should either save it manually or use the cipher
* module instead.
*
* \param ctx CAMELLIA context
* \param mode MBEDTLS_CAMELLIA_ENCRYPT or MBEDTLS_CAMELLIA_DECRYPT
* \param length length of the input data
* \param iv initialization vector (updated after use)
* \param input buffer holding the input data
* \param output buffer holding the output data
* \param ctx The CAMELLIA context to use. This must be initialized
* and bound to a key.
* \param mode The mode of operation. This must be either
* #MBEDTLS_CAMELLIA_ENCRYPT or #MBEDTLS_CAMELLIA_DECRYPT.
* \param length The length in Bytes of the input data \p input.
* This must be a multiple of \c 16 Bytes.
* \param iv The initialization vector. This must be a read/write buffer
* of length \c 16 Bytes. It is updated to allow streaming
* use as explained above.
* \param input The buffer holding the input data. This must point to a
* readable buffer of length \p length Bytes.
* \param output The buffer holding the output data. This must point to a
* writable buffer of length \p length Bytes.
*
* \return 0 if successful, or
* MBEDTLS_ERR_CAMELLIA_INVALID_INPUT_LENGTH
* \return \c 0 if successful.
* \return A negative error code on failure.
*/
int mbedtls_camellia_crypt_cbc( mbedtls_camellia_context *ctx,
int mode,
......@@ -145,11 +179,14 @@ int mbedtls_camellia_crypt_cbc( mbedtls_camellia_context *ctx,
#if defined(MBEDTLS_CIPHER_MODE_CFB)
/**
* \brief CAMELLIA-CFB128 buffer encryption/decryption
* \brief Perform a CAMELLIA-CFB128 buffer encryption/decryption
* operation.
*
* Note: Due to the nature of CFB you should use the same key schedule for
* both encryption and decryption. So a context initialized with
* mbedtls_camellia_setkey_enc() for both MBEDTLS_CAMELLIA_ENCRYPT and CAMELLIE_DECRYPT.
* \note Due to the nature of CFB mode, you should use the same
* key for both encryption and decryption. In particular, calls
* to this function should be preceded by a key-schedule via
* mbedtls_camellia_setkey_enc() regardless of whether \p mode
* is #MBEDTLS_CAMELLIA_ENCRYPT or #MBEDTLS_CAMELLIA_DECRYPT.
*
* \note Upon exit, the content of the IV is updated so that you can
* call the function same function again on the following
......@@ -159,16 +196,24 @@ int mbedtls_camellia_crypt_cbc( mbedtls_camellia_context *ctx,
* IV, you should either save it manually or use the cipher
* module instead.
*
* \param ctx CAMELLIA context
* \param mode MBEDTLS_CAMELLIA_ENCRYPT or MBEDTLS_CAMELLIA_DECRYPT
* \param length length of the input data
* \param iv_off offset in IV (updated after use)
* \param iv initialization vector (updated after use)
* \param input buffer holding the input data
* \param output buffer holding the output data
* \param ctx The CAMELLIA context to use. This must be initialized
* and bound to a key.
* \param mode The mode of operation. This must be either
* #MBEDTLS_CAMELLIA_ENCRYPT or #MBEDTLS_CAMELLIA_DECRYPT.
* \param length The length of the input data \p input. Any value is allowed.
* \param iv_off The current offset in the IV. This must be smaller
* than \c 16 Bytes. It is updated after this call to allow
* the aforementioned streaming usage.
* \param iv The initialization vector. This must be a read/write buffer
* of length \c 16 Bytes. It is updated after this call to
* allow the aforementioned streaming usage.
* \param input The buffer holding the input data. This must be a readable
* buffer of size \p length Bytes.
* \param output The buffer to hold the output data. This must be a writable
* buffer of length \p length Bytes.
*
* \return 0 if successful, or
* MBEDTLS_ERR_CAMELLIA_INVALID_INPUT_LENGTH
* \return \c 0 if successful.
* \return A negative error code on failure.
*/
int mbedtls_camellia_crypt_cfb128( mbedtls_camellia_context *ctx,
int mode,
......@@ -181,26 +226,78 @@ int mbedtls_camellia_crypt_cfb128( mbedtls_camellia_context *ctx,
#if defined(MBEDTLS_CIPHER_MODE_CTR)
/**
* \brief CAMELLIA-CTR buffer encryption/decryption
* \brief Perform a CAMELLIA-CTR buffer encryption/decryption operation.
*
* *note Due to the nature of CTR mode, you should use the same
* key for both encryption and decryption. In particular, calls
* to this function should be preceded by a key-schedule via
* mbedtls_camellia_setkey_enc() regardless of whether \p mode
* is #MBEDTLS_CAMELLIA_ENCRYPT or #MBEDTLS_CAMELLIA_DECRYPT.
*
* \warning You must never reuse a nonce value with the same key. Doing so
* would void the encryption for the two messages encrypted with
* the same nonce and key.
*
* There are two common strategies for managing nonces with CTR:
*
* Warning: You have to keep the maximum use of your counter in mind!
* 1. You can handle everything as a single message processed over
* successive calls to this function. In that case, you want to
* set \p nonce_counter and \p nc_off to 0 for the first call, and
* then preserve the values of \p nonce_counter, \p nc_off and \p
* stream_block across calls to this function as they will be
* updated by this function.
*
* Note: Due to the nature of CTR you should use the same key schedule for
* both encryption and decryption. So a context initialized with
* mbedtls_camellia_setkey_enc() for both MBEDTLS_CAMELLIA_ENCRYPT and MBEDTLS_CAMELLIA_DECRYPT.
* With this strategy, you must not encrypt more than 2**128
* blocks of data with the same key.
*
* \param ctx CAMELLIA context
* \param length The length of the data
* \param nc_off The offset in the current stream_block (for resuming
* 2. You can encrypt separate messages by dividing the \p
* nonce_counter buffer in two areas: the first one used for a
* per-message nonce, handled by yourself, and the second one
* updated by this function internally.
*
* For example, you might reserve the first \c 12 Bytes for the
* per-message nonce, and the last \c 4 Bytes for internal use.
* In that case, before calling this function on a new message you
* need to set the first \c 12 Bytes of \p nonce_counter to your
* chosen nonce value, the last four to \c 0, and \p nc_off to \c 0
* (which will cause \p stream_block to be ignored). That way, you
* can encrypt at most \c 2**96 messages of up to \c 2**32 blocks
* each with the same key.
*
* The per-message nonce (or information sufficient to reconstruct
* it) needs to be communicated with the ciphertext and must be
* unique. The recommended way to ensure uniqueness is to use a
* message counter. An alternative is to generate random nonces,
* but this limits the number of messages that can be securely
* encrypted: for example, with 96-bit random nonces, you should
* not encrypt more than 2**32 messages with the same key.
*
* Note that for both stategies, sizes are measured in blocks and
* that a CAMELLIA block is \c 16 Bytes.
*
* \warning Upon return, \p stream_block contains sensitive data. Its
* content must not be written to insecure storage and should be
* securely discarded as soon as it's no longer needed.
*
* \param ctx The CAMELLIA context to use. This must be initialized
* and bound to a key.
* \param length The length of the input data \p input in Bytes.
* Any value is allowed.
* \param nc_off The offset in the current \p stream_block (for resuming
* within current cipher stream). The offset pointer to
* should be 0 at the start of a stream.
* \param nonce_counter The 128-bit nonce and counter.
* \param stream_block The saved stream-block for resuming. Is overwritten
* by the function.
* \param input The input data stream
* \param output The output data stream
*
* \return 0 if successful
* should be \c 0 at the start of a stream. It is updated
* at the end of this call.
* \param nonce_counter The 128-bit nonce and counter. This must be a read/write
* buffer of length \c 16 Bytes.
* \param stream_block The saved stream-block for resuming. This must be a
* read/write buffer of length \c 16 Bytes.
* \param input The input data stream. This must be a readable buffer of
* size \p length Bytes.
* \param output The output data stream. This must be a writable buffer
* of size \p length Bytes.
*
* \return \c 0 if successful.
* \return A negative error code on failure.
*/
int mbedtls_camellia_crypt_ctr( mbedtls_camellia_context *ctx,
size_t length,
......@@ -211,17 +308,7 @@ int mbedtls_camellia_crypt_ctr( mbedtls_camellia_context *ctx,
unsigned char *output );
#endif /* MBEDTLS_CIPHER_MODE_CTR */
#ifdef __cplusplus
}
#endif
#else /* MBEDTLS_CAMELLIA_ALT */
#include "camellia_alt.h"
#endif /* MBEDTLS_CAMELLIA_ALT */
#ifdef __cplusplus
extern "C" {
#endif
#if defined(MBEDTLS_SELF_TEST)
/**
* \brief Checkup routine
......@@ -230,6 +317,8 @@ extern "C" {
*/
int mbedtls_camellia_self_test( int verbose );
#endif /* MBEDTLS_SELF_TEST */
#ifdef __cplusplus
}
#endif
......
/**
* \file ccm.h
*
* \brief CCM combines Counter mode encryption with CBC-MAC authentication
* for 128-bit block ciphers.
* \brief This file provides an API for the CCM authenticated encryption
* mode for block ciphers.
*
* CCM combines Counter mode encryption with CBC-MAC authentication
* for 128-bit block ciphers.
*
* Input to CCM includes the following elements:
* <ul><li>Payload - data that is both authenticated and encrypted.</li>
......@@ -11,6 +14,18 @@
* <li>Nonce - A unique value that is assigned to the payload and the
* associated data.</li></ul>
*
* Definition of CCM:
* http://csrc.nist.gov/publications/nistpubs/800-38C/SP800-38C_updated-July20_2007.pdf
* RFC 3610 "Counter with CBC-MAC (CCM)"
*
* Related:
* RFC 5116 "An Interface and Algorithms for Authenticated Encryption"
*
* Definition of CCM*:
* IEEE 802.15.4 - IEEE Standard for Local and metropolitan area networks
* Integer representation is fixed most-significant-octet-first order and
* the representation of octets is most-significant-bit-first order. This is
* consistent with RFC 3610.
*/
/*
* Copyright (C) 2006-2018, Arm Limited (or its affiliates), All Rights Reserved
......@@ -34,35 +49,48 @@
#ifndef MBEDTLS_CCM_H
#define MBEDTLS_CCM_H
#if !defined(MBEDTLS_CONFIG_FILE)
#include "config.h"
#else
#include MBEDTLS_CONFIG_FILE
#endif
#include "cipher.h"
#define MBEDTLS_ERR_CCM_BAD_INPUT -0x000D /**< Bad input parameters to the function. */
#define MBEDTLS_ERR_CCM_AUTH_FAILED -0x000F /**< Authenticated decryption failed. */
#define MBEDTLS_ERR_CCM_HW_ACCEL_FAILED -0x0011 /**< CCM hardware accelerator failed. */
#if !defined(MBEDTLS_CCM_ALT)
// Regular implementation
//
/* MBEDTLS_ERR_CCM_HW_ACCEL_FAILED is deprecated and should not be used. */
#define MBEDTLS_ERR_CCM_HW_ACCEL_FAILED -0x0011 /**< CCM hardware accelerator failed. */
#ifdef __cplusplus
extern "C" {
#endif
#if !defined(MBEDTLS_CCM_ALT)
// Regular implementation
//
/**
* \brief The CCM context-type definition. The CCM context is passed
* to the APIs called.
*/
typedef struct {
typedef struct mbedtls_ccm_context
{
mbedtls_cipher_context_t cipher_ctx; /*!< The cipher context used. */
}
mbedtls_ccm_context;
#else /* MBEDTLS_CCM_ALT */
#include "ccm_alt.h"
#endif /* MBEDTLS_CCM_ALT */
/**
* \brief This function initializes the specified CCM context,
* to make references valid, and prepare the context
* for mbedtls_ccm_setkey() or mbedtls_ccm_free().
*
* \param ctx The CCM context to initialize.
* \param ctx The CCM context to initialize. This must not be \c NULL.
*/
void mbedtls_ccm_init( mbedtls_ccm_context *ctx );
......@@ -70,12 +98,14 @@ void mbedtls_ccm_init( mbedtls_ccm_context *ctx );
* \brief This function initializes the CCM context set in the
* \p ctx parameter and sets the encryption key.
*
* \param ctx The CCM context to initialize.
* \param ctx The CCM context to initialize. This must be an initialized
* context.
* \param cipher The 128-bit block cipher to use.
* \param key The encryption key.
* \param key The encryption key. This must not be \c NULL.
* \param keybits The key size in bits. This must be acceptable by the cipher.
*
* \return \c 0 on success, or a cipher-specific error code.
* \return \c 0 on success.
* \return A CCM or cipher-specific error code on failure.
*/
int mbedtls_ccm_setkey( mbedtls_ccm_context *ctx,
mbedtls_cipher_id_t cipher,
......@@ -86,36 +116,96 @@ int mbedtls_ccm_setkey( mbedtls_ccm_context *ctx,
* \brief This function releases and clears the specified CCM context
* and underlying cipher sub-context.
*
* \param ctx The CCM context to clear.
* \param ctx The CCM context to clear. If this is \c NULL, the function
* has no effect. Otherwise, this must be initialized.
*/
void mbedtls_ccm_free( mbedtls_ccm_context *ctx );
/**
* \brief This function encrypts a buffer using CCM.
*
* \param ctx The CCM context to use for encryption.
* \note The tag is written to a separate buffer. To concatenate
* the \p tag with the \p output, as done in <em>RFC-3610:
* Counter with CBC-MAC (CCM)</em>, use
* \p tag = \p output + \p length, and make sure that the
* output buffer is at least \p length + \p tag_len wide.
*
* \param ctx The CCM context to use for encryption. This must be
* initialized and bound to a key.
* \param length The length of the input data in Bytes.
* \param iv Initialization vector (nonce).
* \param iv_len The length of the IV in Bytes: 7, 8, 9, 10, 11, 12, or 13.
* \param add The additional data field.
* \param iv The initialization vector (nonce). This must be a readable
* buffer of at least \p iv_len Bytes.
* \param iv_len The length of the nonce in Bytes: 7, 8, 9, 10, 11, 12,
* or 13. The length L of the message length field is
* 15 - \p iv_len.
* \param add The additional data field. If \p add_len is greater than
* zero, \p add must be a readable buffer of at least that
* length.
* \param add_len The length of additional data in Bytes.
* Must be less than 2^16 - 2^8.
* \param input The buffer holding the input data.
* \param output The buffer holding the output data.
* Must be at least \p length Bytes wide.
* \param tag The buffer holding the tag.
* \param tag_len The length of the tag to generate in Bytes:
* This must be less than `2^16 - 2^8`.
* \param input The buffer holding the input data. If \p length is greater
* than zero, \p input must be a readable buffer of at least
* that length.
* \param output The buffer holding the output data. If \p length is greater
* than zero, \p output must be a writable buffer of at least
* that length.
* \param tag The buffer holding the authentication field. This must be a
* readable buffer of at least \p tag_len Bytes.
* \param tag_len The length of the authentication field to generate in Bytes:
* 4, 6, 8, 10, 12, 14 or 16.
*
* \return \c 0 on success.
* \return A CCM or cipher-specific error code on failure.
*/
int mbedtls_ccm_encrypt_and_tag( mbedtls_ccm_context *ctx, size_t length,
const unsigned char *iv, size_t iv_len,
const unsigned char *add, size_t add_len,
const unsigned char *input, unsigned char *output,
unsigned char *tag, size_t tag_len );
/**
* \brief This function encrypts a buffer using CCM*.
*
* \note The tag is written to a separate buffer. To concatenate
* the \p tag with the \p output, as done in <em>RFC-3610:
* Counter with CBC-MAC (CCM)</em>, use
* \p tag = \p output + \p length, and make sure that the
* output buffer is at least \p length + \p tag_len wide.
*
* \note When using this function in a variable tag length context,
* the tag length has to be encoded into the \p iv passed to
* this function.
*
* \param ctx The CCM context to use for encryption. This must be
* initialized and bound to a key.
* \param length The length of the input data in Bytes.
* \param iv The initialization vector (nonce). This must be a readable
* buffer of at least \p iv_len Bytes.
* \param iv_len The length of the nonce in Bytes: 7, 8, 9, 10, 11, 12,
* or 13. The length L of the message length field is
* 15 - \p iv_len.
* \param add The additional data field. This must be a readable buffer of
* at least \p add_len Bytes.
* \param add_len The length of additional data in Bytes.
* This must be less than 2^16 - 2^8.
* \param input The buffer holding the input data. If \p length is greater
* than zero, \p input must be a readable buffer of at least
* that length.
* \param output The buffer holding the output data. If \p length is greater
* than zero, \p output must be a writable buffer of at least
* that length.
* \param tag The buffer holding the authentication field. This must be a
* readable buffer of at least \p tag_len Bytes.
* \param tag_len The length of the authentication field to generate in Bytes:
* 0, 4, 6, 8, 10, 12, 14 or 16.
*
* \warning Passing \c 0 as \p tag_len means that the message is no
* longer authenticated.
*
* \return \c 0 on success.
* \return A CCM or cipher-specific error code on failure.
*/
int mbedtls_ccm_encrypt_and_tag( mbedtls_ccm_context *ctx, size_t length,
int mbedtls_ccm_star_encrypt_and_tag( mbedtls_ccm_context *ctx, size_t length,
const unsigned char *iv, size_t iv_len,
const unsigned char *add, size_t add_len,
const unsigned char *input, unsigned char *output,
......@@ -125,22 +215,32 @@ int mbedtls_ccm_encrypt_and_tag( mbedtls_ccm_context *ctx, size_t length,
* \brief This function performs a CCM authenticated decryption of a
* buffer.
*
* \param ctx The CCM context to use for decryption.
* \param ctx The CCM context to use for decryption. This must be
* initialized and bound to a key.
* \param length The length of the input data in Bytes.
* \param iv Initialization vector.
* \param iv_len The length of the IV in Bytes: 7, 8, 9, 10, 11, 12, or 13.
* \param add The additional data field.
* \param iv The initialization vector (nonce). This must be a readable
* buffer of at least \p iv_len Bytes.
* \param iv_len The length of the nonce in Bytes: 7, 8, 9, 10, 11, 12,
* or 13. The length L of the message length field is
* 15 - \p iv_len.
* \param add The additional data field. This must be a readable buffer
* of at least that \p add_len Bytes..
* \param add_len The length of additional data in Bytes.
* Must be less than 2^16 - 2^8.
* \param input The buffer holding the input data.
* \param output The buffer holding the output data.
* Must be at least \p length Bytes wide.
* \param tag The buffer holding the tag.
* \param tag_len The length of the tag in Bytes.
* This must be less than 2^16 - 2^8.
* \param input The buffer holding the input data. If \p length is greater
* than zero, \p input must be a readable buffer of at least
* that length.
* \param output The buffer holding the output data. If \p length is greater
* than zero, \p output must be a writable buffer of at least
* that length.
* \param tag The buffer holding the authentication field. This must be a
* readable buffer of at least \p tag_len Bytes.
* \param tag_len The length of the authentication field to generate in Bytes:
* 4, 6, 8, 10, 12, 14 or 16.
*
* \return 0 if successful and authenticated, or
* #MBEDTLS_ERR_CCM_AUTH_FAILED if the tag does not match.
* \return \c 0 on success. This indicates that the message is authentic.
* \return #MBEDTLS_ERR_CCM_AUTH_FAILED if the tag does not match.
* \return A cipher-specific error code on calculation failure.
*/
int mbedtls_ccm_auth_decrypt( mbedtls_ccm_context *ctx, size_t length,
const unsigned char *iv, size_t iv_len,
......@@ -148,23 +248,57 @@ int mbedtls_ccm_auth_decrypt( mbedtls_ccm_context *ctx, size_t length,
const unsigned char *input, unsigned char *output,
const unsigned char *tag, size_t tag_len );
#ifdef __cplusplus
}
#endif
#else /* MBEDTLS_CCM_ALT */
#include "ccm_alt.h"
#endif /* MBEDTLS_CCM_ALT */
#ifdef __cplusplus
extern "C" {
#endif
/**
* \brief This function performs a CCM* authenticated decryption of a
* buffer.
*
* \note When using this function in a variable tag length context,
* the tag length has to be decoded from \p iv and passed to
* this function as \p tag_len. (\p tag needs to be adjusted
* accordingly.)
*
* \param ctx The CCM context to use for decryption. This must be
* initialized and bound to a key.
* \param length The length of the input data in Bytes.
* \param iv The initialization vector (nonce). This must be a readable
* buffer of at least \p iv_len Bytes.
* \param iv_len The length of the nonce in Bytes: 7, 8, 9, 10, 11, 12,
* or 13. The length L of the message length field is
* 15 - \p iv_len.
* \param add The additional data field. This must be a readable buffer of
* at least that \p add_len Bytes.
* \param add_len The length of additional data in Bytes.
* This must be less than 2^16 - 2^8.
* \param input The buffer holding the input data. If \p length is greater
* than zero, \p input must be a readable buffer of at least
* that length.
* \param output The buffer holding the output data. If \p length is greater
* than zero, \p output must be a writable buffer of at least
* that length.
* \param tag The buffer holding the authentication field. This must be a
* readable buffer of at least \p tag_len Bytes.
* \param tag_len The length of the authentication field in Bytes.
* 0, 4, 6, 8, 10, 12, 14 or 16.
*
* \warning Passing \c 0 as \p tag_len means that the message is nos
* longer authenticated.
*
* \return \c 0 on success.
* \return #MBEDTLS_ERR_CCM_AUTH_FAILED if the tag does not match.
* \return A cipher-specific error code on calculation failure.
*/
int mbedtls_ccm_star_auth_decrypt( mbedtls_ccm_context *ctx, size_t length,
const unsigned char *iv, size_t iv_len,
const unsigned char *add, size_t add_len,
const unsigned char *input, unsigned char *output,
const unsigned char *tag, size_t tag_len );
#if defined(MBEDTLS_SELF_TEST) && defined(MBEDTLS_AES_C)
/**
* \brief The CCM checkup routine.
*
* \return \c 0 on success, or \c 1 on failure.
* \return \c 0 on success.
* \return \c 1 on failure.
*/
int mbedtls_ccm_self_test( int verbose );
#endif /* MBEDTLS_SELF_TEST && MBEDTLS_AES_C */
......
......@@ -24,74 +24,226 @@
#ifndef MBEDTLS_CERTS_H
#define MBEDTLS_CERTS_H
#if !defined(MBEDTLS_CONFIG_FILE)
#include "config.h"
#else
#include MBEDTLS_CONFIG_FILE
#endif
#include <stddef.h>
#ifdef __cplusplus
extern "C" {
#endif
/* List of all PEM-encoded CA certificates, terminated by NULL;
* PEM encoded if MBEDTLS_PEM_PARSE_C is enabled, DER encoded
* otherwise. */
extern const char * mbedtls_test_cas[];
extern const size_t mbedtls_test_cas_len[];
/* List of all DER-encoded CA certificates, terminated by NULL */
extern const unsigned char * mbedtls_test_cas_der[];
extern const size_t mbedtls_test_cas_der_len[];
#if defined(MBEDTLS_PEM_PARSE_C)
/* Concatenation of all CA certificates in PEM format if available */
extern const char mbedtls_test_cas_pem[];
extern const size_t mbedtls_test_cas_pem_len;
#endif
/* List of all CA certificates, terminated by NULL */
extern const char * mbedtls_test_cas[];
extern const size_t mbedtls_test_cas_len[];
#endif /* MBEDTLS_PEM_PARSE_C */
/*
* Convenience for users who just want a certificate:
* RSA by default, or ECDSA if RSA is not available
* CA test certificates
*/
extern const char mbedtls_test_ca_crt_ec_pem[];
extern const char mbedtls_test_ca_key_ec_pem[];
extern const char mbedtls_test_ca_pwd_ec_pem[];
extern const char mbedtls_test_ca_key_rsa_pem[];
extern const char mbedtls_test_ca_pwd_rsa_pem[];
extern const char mbedtls_test_ca_crt_rsa_sha1_pem[];
extern const char mbedtls_test_ca_crt_rsa_sha256_pem[];
extern const unsigned char mbedtls_test_ca_crt_ec_der[];
extern const unsigned char mbedtls_test_ca_key_ec_der[];
extern const unsigned char mbedtls_test_ca_key_rsa_der[];
extern const unsigned char mbedtls_test_ca_crt_rsa_sha1_der[];
extern const unsigned char mbedtls_test_ca_crt_rsa_sha256_der[];
extern const size_t mbedtls_test_ca_crt_ec_pem_len;
extern const size_t mbedtls_test_ca_key_ec_pem_len;
extern const size_t mbedtls_test_ca_pwd_ec_pem_len;
extern const size_t mbedtls_test_ca_key_rsa_pem_len;
extern const size_t mbedtls_test_ca_pwd_rsa_pem_len;
extern const size_t mbedtls_test_ca_crt_rsa_sha1_pem_len;
extern const size_t mbedtls_test_ca_crt_rsa_sha256_pem_len;
extern const size_t mbedtls_test_ca_crt_ec_der_len;
extern const size_t mbedtls_test_ca_key_ec_der_len;
extern const size_t mbedtls_test_ca_pwd_ec_der_len;
extern const size_t mbedtls_test_ca_key_rsa_der_len;
extern const size_t mbedtls_test_ca_pwd_rsa_der_len;
extern const size_t mbedtls_test_ca_crt_rsa_sha1_der_len;
extern const size_t mbedtls_test_ca_crt_rsa_sha256_der_len;
/* Config-dependent dispatch between PEM and DER encoding
* (PEM if enabled, otherwise DER) */
extern const char mbedtls_test_ca_crt_ec[];
extern const char mbedtls_test_ca_key_ec[];
extern const char mbedtls_test_ca_pwd_ec[];
extern const char mbedtls_test_ca_key_rsa[];
extern const char mbedtls_test_ca_pwd_rsa[];
extern const char mbedtls_test_ca_crt_rsa_sha1[];
extern const char mbedtls_test_ca_crt_rsa_sha256[];
extern const size_t mbedtls_test_ca_crt_ec_len;
extern const size_t mbedtls_test_ca_key_ec_len;
extern const size_t mbedtls_test_ca_pwd_ec_len;
extern const size_t mbedtls_test_ca_key_rsa_len;
extern const size_t mbedtls_test_ca_pwd_rsa_len;
extern const size_t mbedtls_test_ca_crt_rsa_sha1_len;
extern const size_t mbedtls_test_ca_crt_rsa_sha256_len;
/* Config-dependent dispatch between SHA-1 and SHA-256
* (SHA-256 if enabled, otherwise SHA-1) */
extern const char mbedtls_test_ca_crt_rsa[];
extern const size_t mbedtls_test_ca_crt_rsa_len;
/* Config-dependent dispatch between EC and RSA
* (RSA if enabled, otherwise EC) */
extern const char * mbedtls_test_ca_crt;
extern const size_t mbedtls_test_ca_crt_len;
extern const char * mbedtls_test_ca_key;
extern const size_t mbedtls_test_ca_key_len;
extern const char * mbedtls_test_ca_pwd;
extern const size_t mbedtls_test_ca_crt_len;
extern const size_t mbedtls_test_ca_key_len;
extern const size_t mbedtls_test_ca_pwd_len;
/*
* Server test certificates
*/
extern const char mbedtls_test_srv_crt_ec_pem[];
extern const char mbedtls_test_srv_key_ec_pem[];
extern const char mbedtls_test_srv_pwd_ec_pem[];
extern const char mbedtls_test_srv_key_rsa_pem[];
extern const char mbedtls_test_srv_pwd_rsa_pem[];
extern const char mbedtls_test_srv_crt_rsa_sha1_pem[];
extern const char mbedtls_test_srv_crt_rsa_sha256_pem[];
extern const unsigned char mbedtls_test_srv_crt_ec_der[];
extern const unsigned char mbedtls_test_srv_key_ec_der[];
extern const unsigned char mbedtls_test_srv_key_rsa_der[];
extern const unsigned char mbedtls_test_srv_crt_rsa_sha1_der[];
extern const unsigned char mbedtls_test_srv_crt_rsa_sha256_der[];
extern const size_t mbedtls_test_srv_crt_ec_pem_len;
extern const size_t mbedtls_test_srv_key_ec_pem_len;
extern const size_t mbedtls_test_srv_pwd_ec_pem_len;
extern const size_t mbedtls_test_srv_key_rsa_pem_len;
extern const size_t mbedtls_test_srv_pwd_rsa_pem_len;
extern const size_t mbedtls_test_srv_crt_rsa_sha1_pem_len;
extern const size_t mbedtls_test_srv_crt_rsa_sha256_pem_len;
extern const size_t mbedtls_test_srv_crt_ec_der_len;
extern const size_t mbedtls_test_srv_key_ec_der_len;
extern const size_t mbedtls_test_srv_pwd_ec_der_len;
extern const size_t mbedtls_test_srv_key_rsa_der_len;
extern const size_t mbedtls_test_srv_pwd_rsa_der_len;
extern const size_t mbedtls_test_srv_crt_rsa_sha1_der_len;
extern const size_t mbedtls_test_srv_crt_rsa_sha256_der_len;
/* Config-dependent dispatch between PEM and DER encoding
* (PEM if enabled, otherwise DER) */
extern const char mbedtls_test_srv_crt_ec[];
extern const char mbedtls_test_srv_key_ec[];
extern const char mbedtls_test_srv_pwd_ec[];
extern const char mbedtls_test_srv_key_rsa[];
extern const char mbedtls_test_srv_pwd_rsa[];
extern const char mbedtls_test_srv_crt_rsa_sha1[];
extern const char mbedtls_test_srv_crt_rsa_sha256[];
extern const size_t mbedtls_test_srv_crt_ec_len;
extern const size_t mbedtls_test_srv_key_ec_len;
extern const size_t mbedtls_test_srv_pwd_ec_len;
extern const size_t mbedtls_test_srv_key_rsa_len;
extern const size_t mbedtls_test_srv_pwd_rsa_len;
extern const size_t mbedtls_test_srv_crt_rsa_sha1_len;
extern const size_t mbedtls_test_srv_crt_rsa_sha256_len;
/* Config-dependent dispatch between SHA-1 and SHA-256
* (SHA-256 if enabled, otherwise SHA-1) */
extern const char mbedtls_test_srv_crt_rsa[];
extern const size_t mbedtls_test_srv_crt_rsa_len;
/* Config-dependent dispatch between EC and RSA
* (RSA if enabled, otherwise EC) */
extern const char * mbedtls_test_srv_crt;
extern const size_t mbedtls_test_srv_crt_len;
extern const char * mbedtls_test_srv_key;
extern const char * mbedtls_test_srv_pwd;
extern const size_t mbedtls_test_srv_crt_len;
extern const size_t mbedtls_test_srv_key_len;
extern const char * mbedtls_test_cli_crt;
extern const size_t mbedtls_test_cli_crt_len;
extern const char * mbedtls_test_cli_key;
extern const size_t mbedtls_test_cli_key_len;
extern const size_t mbedtls_test_srv_pwd_len;
/*
* Client test certificates
*/
extern const char mbedtls_test_cli_crt_ec_pem[];
extern const char mbedtls_test_cli_key_ec_pem[];
extern const char mbedtls_test_cli_pwd_ec_pem[];
extern const char mbedtls_test_cli_key_rsa_pem[];
extern const char mbedtls_test_cli_pwd_rsa_pem[];
extern const char mbedtls_test_cli_crt_rsa_pem[];
extern const unsigned char mbedtls_test_cli_crt_ec_der[];
extern const unsigned char mbedtls_test_cli_key_ec_der[];
extern const unsigned char mbedtls_test_cli_key_rsa_der[];
extern const unsigned char mbedtls_test_cli_crt_rsa_der[];
extern const size_t mbedtls_test_cli_crt_ec_pem_len;
extern const size_t mbedtls_test_cli_key_ec_pem_len;
extern const size_t mbedtls_test_cli_pwd_ec_pem_len;
extern const size_t mbedtls_test_cli_key_rsa_pem_len;
extern const size_t mbedtls_test_cli_pwd_rsa_pem_len;
extern const size_t mbedtls_test_cli_crt_rsa_pem_len;
extern const size_t mbedtls_test_cli_crt_ec_der_len;
extern const size_t mbedtls_test_cli_key_ec_der_len;
extern const size_t mbedtls_test_cli_key_rsa_der_len;
extern const size_t mbedtls_test_cli_crt_rsa_der_len;
/* Config-dependent dispatch between PEM and DER encoding
* (PEM if enabled, otherwise DER) */
extern const char mbedtls_test_cli_crt_ec[];
extern const char mbedtls_test_cli_key_ec[];
extern const char mbedtls_test_cli_pwd_ec[];
extern const char mbedtls_test_cli_key_rsa[];
extern const char mbedtls_test_cli_pwd_rsa[];
extern const char mbedtls_test_cli_crt_rsa[];
#if defined(MBEDTLS_ECDSA_C)
extern const char mbedtls_test_ca_crt_ec[];
extern const size_t mbedtls_test_ca_crt_ec_len;
extern const char mbedtls_test_ca_key_ec[];
extern const size_t mbedtls_test_ca_key_ec_len;
extern const char mbedtls_test_ca_pwd_ec[];
extern const size_t mbedtls_test_ca_pwd_ec_len;
extern const char mbedtls_test_srv_crt_ec[];
extern const size_t mbedtls_test_srv_crt_ec_len;
extern const char mbedtls_test_srv_key_ec[];
extern const size_t mbedtls_test_srv_key_ec_len;
extern const char mbedtls_test_cli_crt_ec[];
extern const size_t mbedtls_test_cli_crt_ec_len;
extern const char mbedtls_test_cli_key_ec[];
extern const size_t mbedtls_test_cli_key_ec_len;
#endif
#if defined(MBEDTLS_RSA_C)
extern const char mbedtls_test_ca_crt_rsa[];
extern const size_t mbedtls_test_ca_crt_rsa_len;
extern const char mbedtls_test_ca_key_rsa[];
extern const size_t mbedtls_test_ca_key_rsa_len;
extern const char mbedtls_test_ca_pwd_rsa[];
extern const size_t mbedtls_test_ca_pwd_rsa_len;
extern const char mbedtls_test_srv_crt_rsa[];
extern const size_t mbedtls_test_srv_crt_rsa_len;
extern const char mbedtls_test_srv_key_rsa[];
extern const size_t mbedtls_test_srv_key_rsa_len;
extern const char mbedtls_test_cli_crt_rsa[];
extern const size_t mbedtls_test_cli_crt_rsa_len;
extern const char mbedtls_test_cli_key_rsa[];
extern const size_t mbedtls_test_cli_pwd_ec_len;
extern const size_t mbedtls_test_cli_key_rsa_len;
#endif
extern const size_t mbedtls_test_cli_pwd_rsa_len;
extern const size_t mbedtls_test_cli_crt_rsa_len;
/* Config-dependent dispatch between EC and RSA
* (RSA if enabled, otherwise EC) */
extern const char * mbedtls_test_cli_crt;
extern const char * mbedtls_test_cli_key;
extern const char * mbedtls_test_cli_pwd;
extern const size_t mbedtls_test_cli_crt_len;
extern const size_t mbedtls_test_cli_key_len;
extern const size_t mbedtls_test_cli_pwd_len;
#ifdef __cplusplus
}
......
/**
* \file chacha20.h
*
* \brief This file contains ChaCha20 definitions and functions.
*
* ChaCha20 is a stream cipher that can encrypt and decrypt
* information. ChaCha was created by Daniel Bernstein as a variant of
* its Salsa cipher https://cr.yp.to/chacha/chacha-20080128.pdf
* ChaCha20 is the variant with 20 rounds, that was also standardized
* in RFC 7539.
*
* \author Daniel King <damaki.gh@gmail.com>
*/
/* Copyright (C) 2006-2018, Arm Limited (or its affiliates), All Rights Reserved.
* SPDX-License-Identifier: Apache-2.0
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may
* not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* This file is part of Mbed TLS (https://tls.mbed.org)
*/
#ifndef MBEDTLS_CHACHA20_H
#define MBEDTLS_CHACHA20_H
#if !defined(MBEDTLS_CONFIG_FILE)
#include "config.h"
#else
#include MBEDTLS_CONFIG_FILE
#endif
#include <stdint.h>
#include <stddef.h>
#define MBEDTLS_ERR_CHACHA20_BAD_INPUT_DATA -0x0051 /**< Invalid input parameter(s). */
/* MBEDTLS_ERR_CHACHA20_FEATURE_UNAVAILABLE is deprecated and should not be
* used. */
#define MBEDTLS_ERR_CHACHA20_FEATURE_UNAVAILABLE -0x0053 /**< Feature not available. For example, s part of the API is not implemented. */
/* MBEDTLS_ERR_CHACHA20_HW_ACCEL_FAILED is deprecated and should not be used.
*/
#define MBEDTLS_ERR_CHACHA20_HW_ACCEL_FAILED -0x0055 /**< Chacha20 hardware accelerator failed. */
#ifdef __cplusplus
extern "C" {
#endif
#if !defined(MBEDTLS_CHACHA20_ALT)
typedef struct mbedtls_chacha20_context
{
uint32_t state[16]; /*! The state (before round operations). */
uint8_t keystream8[64]; /*! Leftover keystream bytes. */
size_t keystream_bytes_used; /*! Number of keystream bytes already used. */
}
mbedtls_chacha20_context;
#else /* MBEDTLS_CHACHA20_ALT */
#include "chacha20_alt.h"
#endif /* MBEDTLS_CHACHA20_ALT */
/**
* \brief This function initializes the specified ChaCha20 context.
*
* It must be the first API called before using
* the context.
*
* It is usually followed by calls to
* \c mbedtls_chacha20_setkey() and
* \c mbedtls_chacha20_starts(), then one or more calls to
* to \c mbedtls_chacha20_update(), and finally to
* \c mbedtls_chacha20_free().
*
* \param ctx The ChaCha20 context to initialize.
* This must not be \c NULL.
*/
void mbedtls_chacha20_init( mbedtls_chacha20_context *ctx );
/**
* \brief This function releases and clears the specified
* ChaCha20 context.
*
* \param ctx The ChaCha20 context to clear. This may be \c NULL,
* in which case this function is a no-op. If it is not
* \c NULL, it must point to an initialized context.
*
*/
void mbedtls_chacha20_free( mbedtls_chacha20_context *ctx );
/**
* \brief This function sets the encryption/decryption key.
*
* \note After using this function, you must also call
* \c mbedtls_chacha20_starts() to set a nonce before you
* start encrypting/decrypting data with
* \c mbedtls_chacha_update().
*
* \param ctx The ChaCha20 context to which the key should be bound.
* It must be initialized.
* \param key The encryption/decryption key. This must be \c 32 Bytes
* in length.
*
* \return \c 0 on success.
* \return #MBEDTLS_ERR_CHACHA20_BAD_INPUT_DATA if ctx or key is NULL.
*/
int mbedtls_chacha20_setkey( mbedtls_chacha20_context *ctx,
const unsigned char key[32] );
/**
* \brief This function sets the nonce and initial counter value.
*
* \note A ChaCha20 context can be re-used with the same key by
* calling this function to change the nonce.
*
* \warning You must never use the same nonce twice with the same key.
* This would void any confidentiality guarantees for the
* messages encrypted with the same nonce and key.
*
* \param ctx The ChaCha20 context to which the nonce should be bound.
* It must be initialized and bound to a key.
* \param nonce The nonce. This must be \c 12 Bytes in size.
* \param counter The initial counter value. This is usually \c 0.
*
* \return \c 0 on success.
* \return #MBEDTLS_ERR_CHACHA20_BAD_INPUT_DATA if ctx or nonce is
* NULL.
*/
int mbedtls_chacha20_starts( mbedtls_chacha20_context* ctx,
const unsigned char nonce[12],
uint32_t counter );
/**
* \brief This function encrypts or decrypts data.
*
* Since ChaCha20 is a stream cipher, the same operation is
* used for encrypting and decrypting data.
*
* \note The \p input and \p output pointers must either be equal or
* point to non-overlapping buffers.
*
* \note \c mbedtls_chacha20_setkey() and
* \c mbedtls_chacha20_starts() must be called at least once
* to setup the context before this function can be called.
*
* \note This function can be called multiple times in a row in
* order to encrypt of decrypt data piecewise with the same
* key and nonce.
*
* \param ctx The ChaCha20 context to use for encryption or decryption.
* It must be initialized and bound to a key and nonce.
* \param size The length of the input data in Bytes.
* \param input The buffer holding the input data.
* This pointer can be \c NULL if `size == 0`.
* \param output The buffer holding the output data.
* This must be able to hold \p size Bytes.
* This pointer can be \c NULL if `size == 0`.
*
* \return \c 0 on success.
* \return A negative error code on failure.
*/
int mbedtls_chacha20_update( mbedtls_chacha20_context *ctx,
size_t size,
const unsigned char *input,
unsigned char *output );
/**
* \brief This function encrypts or decrypts data with ChaCha20 and
* the given key and nonce.
*
* Since ChaCha20 is a stream cipher, the same operation is
* used for encrypting and decrypting data.
*
* \warning You must never use the same (key, nonce) pair more than
* once. This would void any confidentiality guarantees for
* the messages encrypted with the same nonce and key.
*
* \note The \p input and \p output pointers must either be equal or
* point to non-overlapping buffers.
*
* \param key The encryption/decryption key.
* This must be \c 32 Bytes in length.
* \param nonce The nonce. This must be \c 12 Bytes in size.
* \param counter The initial counter value. This is usually \c 0.
* \param size The length of the input data in Bytes.
* \param input The buffer holding the input data.
* This pointer can be \c NULL if `size == 0`.
* \param output The buffer holding the output data.
* This must be able to hold \p size Bytes.
* This pointer can be \c NULL if `size == 0`.
*
* \return \c 0 on success.
* \return A negative error code on failure.
*/
int mbedtls_chacha20_crypt( const unsigned char key[32],
const unsigned char nonce[12],
uint32_t counter,
size_t size,
const unsigned char* input,
unsigned char* output );
#if defined(MBEDTLS_SELF_TEST)
/**
* \brief The ChaCha20 checkup routine.
*
* \return \c 0 on success.
* \return \c 1 on failure.
*/
int mbedtls_chacha20_self_test( int verbose );
#endif /* MBEDTLS_SELF_TEST */
#ifdef __cplusplus
}
#endif
#endif /* MBEDTLS_CHACHA20_H */
/**
* \file chachapoly.h
*
* \brief This file contains the AEAD-ChaCha20-Poly1305 definitions and
* functions.
*
* ChaCha20-Poly1305 is an algorithm for Authenticated Encryption
* with Associated Data (AEAD) that can be used to encrypt and
* authenticate data. It is based on ChaCha20 and Poly1305 by Daniel
* Bernstein and was standardized in RFC 7539.
*
* \author Daniel King <damaki.gh@gmail.com>
*/
/* Copyright (C) 2006-2018, Arm Limited (or its affiliates), All Rights Reserved.
* SPDX-License-Identifier: Apache-2.0
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may
* not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* This file is part of Mbed TLS (https://tls.mbed.org)
*/
#ifndef MBEDTLS_CHACHAPOLY_H
#define MBEDTLS_CHACHAPOLY_H
#if !defined(MBEDTLS_CONFIG_FILE)
#include "config.h"
#else
#include MBEDTLS_CONFIG_FILE
#endif
/* for shared error codes */
#include "poly1305.h"
#define MBEDTLS_ERR_CHACHAPOLY_BAD_STATE -0x0054 /**< The requested operation is not permitted in the current state. */
#define MBEDTLS_ERR_CHACHAPOLY_AUTH_FAILED -0x0056 /**< Authenticated decryption failed: data was not authentic. */
#ifdef __cplusplus
extern "C" {
#endif
typedef enum
{
MBEDTLS_CHACHAPOLY_ENCRYPT, /**< The mode value for performing encryption. */
MBEDTLS_CHACHAPOLY_DECRYPT /**< The mode value for performing decryption. */
}
mbedtls_chachapoly_mode_t;
#if !defined(MBEDTLS_CHACHAPOLY_ALT)
#include "chacha20.h"
typedef struct mbedtls_chachapoly_context
{
mbedtls_chacha20_context chacha20_ctx; /**< The ChaCha20 context. */
mbedtls_poly1305_context poly1305_ctx; /**< The Poly1305 context. */
uint64_t aad_len; /**< The length (bytes) of the Additional Authenticated Data. */
uint64_t ciphertext_len; /**< The length (bytes) of the ciphertext. */
int state; /**< The current state of the context. */
mbedtls_chachapoly_mode_t mode; /**< Cipher mode (encrypt or decrypt). */
}
mbedtls_chachapoly_context;
#else /* !MBEDTLS_CHACHAPOLY_ALT */
#include "chachapoly_alt.h"
#endif /* !MBEDTLS_CHACHAPOLY_ALT */
/**
* \brief This function initializes the specified ChaCha20-Poly1305 context.
*
* It must be the first API called before using
* the context. It must be followed by a call to
* \c mbedtls_chachapoly_setkey() before any operation can be
* done, and to \c mbedtls_chachapoly_free() once all
* operations with that context have been finished.
*
* In order to encrypt or decrypt full messages at once, for
* each message you should make a single call to
* \c mbedtls_chachapoly_crypt_and_tag() or
* \c mbedtls_chachapoly_auth_decrypt().
*
* In order to encrypt messages piecewise, for each
* message you should make a call to
* \c mbedtls_chachapoly_starts(), then 0 or more calls to
* \c mbedtls_chachapoly_update_aad(), then 0 or more calls to
* \c mbedtls_chachapoly_update(), then one call to
* \c mbedtls_chachapoly_finish().
*
* \warning Decryption with the piecewise API is discouraged! Always
* use \c mbedtls_chachapoly_auth_decrypt() when possible!
*
* If however this is not possible because the data is too
* large to fit in memory, you need to:
*
* - call \c mbedtls_chachapoly_starts() and (if needed)
* \c mbedtls_chachapoly_update_aad() as above,
* - call \c mbedtls_chachapoly_update() multiple times and
* ensure its output (the plaintext) is NOT used in any other
* way than placing it in temporary storage at this point,
* - call \c mbedtls_chachapoly_finish() to compute the
* authentication tag and compared it in constant time to the
* tag received with the ciphertext.
*
* If the tags are not equal, you must immediately discard
* all previous outputs of \c mbedtls_chachapoly_update(),
* otherwise you can now safely use the plaintext.
*
* \param ctx The ChachaPoly context to initialize. Must not be \c NULL.
*/
void mbedtls_chachapoly_init( mbedtls_chachapoly_context *ctx );
/**
* \brief This function releases and clears the specified
* ChaCha20-Poly1305 context.
*
* \param ctx The ChachaPoly context to clear. This may be \c NULL, in which
* case this function is a no-op.
*/
void mbedtls_chachapoly_free( mbedtls_chachapoly_context *ctx );
/**
* \brief This function sets the ChaCha20-Poly1305
* symmetric encryption key.
*
* \param ctx The ChaCha20-Poly1305 context to which the key should be
* bound. This must be initialized.
* \param key The \c 256 Bit (\c 32 Bytes) key.
*
* \return \c 0 on success.
* \return A negative error code on failure.
*/
int mbedtls_chachapoly_setkey( mbedtls_chachapoly_context *ctx,
const unsigned char key[32] );
/**
* \brief This function starts a ChaCha20-Poly1305 encryption or
* decryption operation.
*
* \warning You must never use the same nonce twice with the same key.
* This would void any confidentiality and authenticity
* guarantees for the messages encrypted with the same nonce
* and key.
*
* \note If the context is being used for AAD only (no data to
* encrypt or decrypt) then \p mode can be set to any value.
*
* \warning Decryption with the piecewise API is discouraged, see the
* warning on \c mbedtls_chachapoly_init().
*
* \param ctx The ChaCha20-Poly1305 context. This must be initialized
* and bound to a key.
* \param nonce The nonce/IV to use for the message.
* This must be a redable buffer of length \c 12 Bytes.
* \param mode The operation to perform: #MBEDTLS_CHACHAPOLY_ENCRYPT or
* #MBEDTLS_CHACHAPOLY_DECRYPT (discouraged, see warning).
*
* \return \c 0 on success.
* \return A negative error code on failure.
*/
int mbedtls_chachapoly_starts( mbedtls_chachapoly_context *ctx,
const unsigned char nonce[12],
mbedtls_chachapoly_mode_t mode );
/**
* \brief This function feeds additional data to be authenticated
* into an ongoing ChaCha20-Poly1305 operation.
*
* The Additional Authenticated Data (AAD), also called
* Associated Data (AD) is only authenticated but not
* encrypted nor included in the encrypted output. It is
* usually transmitted separately from the ciphertext or
* computed locally by each party.
*
* \note This function is called before data is encrypted/decrypted.
* I.e. call this function to process the AAD before calling
* \c mbedtls_chachapoly_update().
*
* You may call this function multiple times to process
* an arbitrary amount of AAD. It is permitted to call
* this function 0 times, if no AAD is used.
*
* This function cannot be called any more if data has
* been processed by \c mbedtls_chachapoly_update(),
* or if the context has been finished.
*
* \warning Decryption with the piecewise API is discouraged, see the
* warning on \c mbedtls_chachapoly_init().
*
* \param ctx The ChaCha20-Poly1305 context. This must be initialized
* and bound to a key.
* \param aad_len The length in Bytes of the AAD. The length has no
* restrictions.
* \param aad Buffer containing the AAD.
* This pointer can be \c NULL if `aad_len == 0`.
*
* \return \c 0 on success.
* \return #MBEDTLS_ERR_POLY1305_BAD_INPUT_DATA
* if \p ctx or \p aad are NULL.
* \return #MBEDTLS_ERR_CHACHAPOLY_BAD_STATE
* if the operations has not been started or has been
* finished, or if the AAD has been finished.
*/
int mbedtls_chachapoly_update_aad( mbedtls_chachapoly_context *ctx,
const unsigned char *aad,
size_t aad_len );
/**
* \brief Thus function feeds data to be encrypted or decrypted
* into an on-going ChaCha20-Poly1305
* operation.
*
* The direction (encryption or decryption) depends on the
* mode that was given when calling
* \c mbedtls_chachapoly_starts().
*
* You may call this function multiple times to process
* an arbitrary amount of data. It is permitted to call
* this function 0 times, if no data is to be encrypted
* or decrypted.
*
* \warning Decryption with the piecewise API is discouraged, see the
* warning on \c mbedtls_chachapoly_init().
*
* \param ctx The ChaCha20-Poly1305 context to use. This must be initialized.
* \param len The length (in bytes) of the data to encrypt or decrypt.
* \param input The buffer containing the data to encrypt or decrypt.
* This pointer can be \c NULL if `len == 0`.
* \param output The buffer to where the encrypted or decrypted data is
* written. This must be able to hold \p len bytes.
* This pointer can be \c NULL if `len == 0`.
*
* \return \c 0 on success.
* \return #MBEDTLS_ERR_CHACHAPOLY_BAD_STATE
* if the operation has not been started or has been
* finished.
* \return Another negative error code on other kinds of failure.
*/
int mbedtls_chachapoly_update( mbedtls_chachapoly_context *ctx,
size_t len,
const unsigned char *input,
unsigned char *output );
/**
* \brief This function finished the ChaCha20-Poly1305 operation and
* generates the MAC (authentication tag).
*
* \param ctx The ChaCha20-Poly1305 context to use. This must be initialized.
* \param mac The buffer to where the 128-bit (16 bytes) MAC is written.
*
* \warning Decryption with the piecewise API is discouraged, see the
* warning on \c mbedtls_chachapoly_init().
*
* \return \c 0 on success.
* \return #MBEDTLS_ERR_CHACHAPOLY_BAD_STATE
* if the operation has not been started or has been
* finished.
* \return Another negative error code on other kinds of failure.
*/
int mbedtls_chachapoly_finish( mbedtls_chachapoly_context *ctx,
unsigned char mac[16] );
/**
* \brief This function performs a complete ChaCha20-Poly1305
* authenticated encryption with the previously-set key.
*
* \note Before using this function, you must set the key with
* \c mbedtls_chachapoly_setkey().
*
* \warning You must never use the same nonce twice with the same key.
* This would void any confidentiality and authenticity
* guarantees for the messages encrypted with the same nonce
* and key.
*
* \param ctx The ChaCha20-Poly1305 context to use (holds the key).
* This must be initialized.
* \param length The length (in bytes) of the data to encrypt or decrypt.
* \param nonce The 96-bit (12 bytes) nonce/IV to use.
* \param aad The buffer containing the additional authenticated
* data (AAD). This pointer can be \c NULL if `aad_len == 0`.
* \param aad_len The length (in bytes) of the AAD data to process.
* \param input The buffer containing the data to encrypt or decrypt.
* This pointer can be \c NULL if `ilen == 0`.
* \param output The buffer to where the encrypted or decrypted data
* is written. This pointer can be \c NULL if `ilen == 0`.
* \param tag The buffer to where the computed 128-bit (16 bytes) MAC
* is written. This must not be \c NULL.
*
* \return \c 0 on success.
* \return A negative error code on failure.
*/
int mbedtls_chachapoly_encrypt_and_tag( mbedtls_chachapoly_context *ctx,
size_t length,
const unsigned char nonce[12],
const unsigned char *aad,
size_t aad_len,
const unsigned char *input,
unsigned char *output,
unsigned char tag[16] );
/**
* \brief This function performs a complete ChaCha20-Poly1305
* authenticated decryption with the previously-set key.
*
* \note Before using this function, you must set the key with
* \c mbedtls_chachapoly_setkey().
*
* \param ctx The ChaCha20-Poly1305 context to use (holds the key).
* \param length The length (in Bytes) of the data to decrypt.
* \param nonce The \c 96 Bit (\c 12 bytes) nonce/IV to use.
* \param aad The buffer containing the additional authenticated data (AAD).
* This pointer can be \c NULL if `aad_len == 0`.
* \param aad_len The length (in bytes) of the AAD data to process.
* \param tag The buffer holding the authentication tag.
* This must be a readable buffer of length \c 16 Bytes.
* \param input The buffer containing the data to decrypt.
* This pointer can be \c NULL if `ilen == 0`.
* \param output The buffer to where the decrypted data is written.
* This pointer can be \c NULL if `ilen == 0`.
*
* \return \c 0 on success.
* \return #MBEDTLS_ERR_CHACHAPOLY_AUTH_FAILED
* if the data was not authentic.
* \return Another negative error code on other kinds of failure.
*/
int mbedtls_chachapoly_auth_decrypt( mbedtls_chachapoly_context *ctx,
size_t length,
const unsigned char nonce[12],
const unsigned char *aad,
size_t aad_len,
const unsigned char tag[16],
const unsigned char *input,
unsigned char *output );
#if defined(MBEDTLS_SELF_TEST)
/**
* \brief The ChaCha20-Poly1305 checkup routine.
*
* \return \c 0 on success.
* \return \c 1 on failure.
*/
int mbedtls_chachapoly_self_test( int verbose );
#endif /* MBEDTLS_SELF_TEST */
#ifdef __cplusplus
}
#endif
#endif /* MBEDTLS_CHACHAPOLY_H */
......@@ -4,7 +4,7 @@
* \brief Consistency checks for configuration options
*/
/*
* Copyright (C) 2006-2016, ARM Limited, All Rights Reserved
* Copyright (C) 2006-2018, ARM Limited, All Rights Reserved
* SPDX-License-Identifier: Apache-2.0
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may
......@@ -87,6 +87,11 @@
#error "MBEDTLS_CMAC_C defined, but not all prerequisites"
#endif
#if defined(MBEDTLS_NIST_KW_C) && \
( !defined(MBEDTLS_AES_C) || !defined(MBEDTLS_CIPHER_C) )
#error "MBEDTLS_NIST_KW_C defined, but not all prerequisites"
#endif
#if defined(MBEDTLS_ECDH_C) && !defined(MBEDTLS_ECP_C)
#error "MBEDTLS_ECDH_C defined, but not all prerequisites"
#endif
......@@ -103,11 +108,22 @@
#error "MBEDTLS_ECJPAKE_C defined, but not all prerequisites"
#endif
#if defined(MBEDTLS_ECP_RESTARTABLE) && \
( defined(MBEDTLS_ECDH_COMPUTE_SHARED_ALT) || \
defined(MBEDTLS_ECDH_GEN_PUBLIC_ALT) || \
defined(MBEDTLS_ECDSA_SIGN_ALT) || \
defined(MBEDTLS_ECDSA_VERIFY_ALT) || \
defined(MBEDTLS_ECDSA_GENKEY_ALT) || \
defined(MBEDTLS_ECP_INTERNAL_ALT) || \
defined(MBEDTLS_ECP_ALT) )
#error "MBEDTLS_ECP_RESTARTABLE defined, but it cannot coexist with an alternative ECP implementation"
#endif
#if defined(MBEDTLS_ECDSA_DETERMINISTIC) && !defined(MBEDTLS_HMAC_DRBG_C)
#error "MBEDTLS_ECDSA_DETERMINISTIC defined, but not all prerequisites"
#endif
#if defined(MBEDTLS_ECP_C) && ( !defined(MBEDTLS_BIGNUM_C) || ( \
#if defined(MBEDTLS_ECP_C) && ( !defined(MBEDTLS_BIGNUM_C) || ( \
!defined(MBEDTLS_ECP_DP_SECP192R1_ENABLED) && \
!defined(MBEDTLS_ECP_DP_SECP224R1_ENABLED) && \
!defined(MBEDTLS_ECP_DP_SECP256R1_ENABLED) && \
......@@ -118,7 +134,9 @@
!defined(MBEDTLS_ECP_DP_BP512R1_ENABLED) && \
!defined(MBEDTLS_ECP_DP_SECP192K1_ENABLED) && \
!defined(MBEDTLS_ECP_DP_SECP224K1_ENABLED) && \
!defined(MBEDTLS_ECP_DP_SECP256K1_ENABLED) ) )
!defined(MBEDTLS_ECP_DP_SECP256K1_ENABLED) && \
!defined(MBEDTLS_ECP_DP_CURVE25519_ENABLED) && \
!defined(MBEDTLS_ECP_DP_CURVE448_ENABLED) ) )
#error "MBEDTLS_ECP_C defined, but not all prerequisites"
#endif
......@@ -195,6 +213,10 @@
#error "MBEDTLS_HAVEGE_C defined, but not all prerequisites"
#endif
#if defined(MBEDTLS_HKDF_C) && !defined(MBEDTLS_MD_C)
#error "MBEDTLS_HKDF_C defined, but not all prerequisites"
#endif
#if defined(MBEDTLS_HMAC_DRBG_C) && !defined(MBEDTLS_MD_C)
#error "MBEDTLS_HMAC_DRBG_C defined, but not all prerequisites"
#endif
......@@ -259,6 +281,14 @@
#error "MBEDTLS_MEMORY_BUFFER_ALLOC_C defined, but not all prerequisites"
#endif
#if defined(MBEDTLS_MEMORY_BACKTRACE) && !defined(MBEDTLS_MEMORY_BUFFER_ALLOC_C)
#error "MBEDTLS_MEMORY_BACKTRACE defined, but not all prerequesites"
#endif
#if defined(MBEDTLS_MEMORY_DEBUG) && !defined(MBEDTLS_MEMORY_BUFFER_ALLOC_C)
#error "MBEDTLS_MEMORY_DEBUG defined, but not all prerequesites"
#endif
#if defined(MBEDTLS_PADLOCK_C) && !defined(MBEDTLS_HAVE_ASM)
#error "MBEDTLS_PADLOCK_C defined, but not all prerequisites"
#endif
......@@ -671,7 +701,7 @@
/*
* Avoid warning from -pedantic. This is a convenient place for this
* workaround since this is included by every single file before the
* #if defined(MBEDTLS_xxx_C) that results in emtpy translation units.
* #if defined(MBEDTLS_xxx_C) that results in empty translation units.
*/
typedef int mbedtls_iso_c_forbids_empty_translation_units;
......
/**
* \file cipher.h
*
* \brief The generic cipher wrapper.
* \brief This file contains an abstraction interface for use with the cipher
* primitives provided by the library. It provides a common interface to all of
* the available cipher operations.
*
* \author Adriaan de Jong <dejong@fox-it.com>
*/
......@@ -34,8 +36,9 @@
#endif
#include <stddef.h>
#include "platform_util.h"
#if defined(MBEDTLS_GCM_C) || defined(MBEDTLS_CCM_C)
#if defined(MBEDTLS_GCM_C) || defined(MBEDTLS_CCM_C) || defined(MBEDTLS_CHACHAPOLY_C)
#define MBEDTLS_CIPHER_MODE_AEAD
#endif
......@@ -43,7 +46,8 @@
#define MBEDTLS_CIPHER_MODE_WITH_PADDING
#endif
#if defined(MBEDTLS_ARC4_C) || defined(MBEDTLS_CIPHER_NULL_CIPHER)
#if defined(MBEDTLS_ARC4_C) || defined(MBEDTLS_CIPHER_NULL_CIPHER) || \
defined(MBEDTLS_CHACHA20_C)
#define MBEDTLS_CIPHER_MODE_STREAM
#endif
......@@ -59,6 +63,8 @@
#define MBEDTLS_ERR_CIPHER_FULL_BLOCK_EXPECTED -0x6280 /**< Decryption of block requires a full block. */
#define MBEDTLS_ERR_CIPHER_AUTH_FAILED -0x6300 /**< Authentication failed (for AEAD modes). */
#define MBEDTLS_ERR_CIPHER_INVALID_CONTEXT -0x6380 /**< The context is invalid. For example, because it was freed. */
/* MBEDTLS_ERR_CIPHER_HW_ACCEL_FAILED is deprecated and should not be used. */
#define MBEDTLS_ERR_CIPHER_HW_ACCEL_FAILED -0x6400 /**< Cipher hardware accelerator failed. */
#define MBEDTLS_CIPHER_VARIABLE_IV_LEN 0x01 /**< Cipher accepts IVs of variable length. */
......@@ -69,93 +75,122 @@ extern "C" {
#endif
/**
* \brief An enumeration of supported ciphers.
* \brief Supported cipher types.
*
* \warning ARC4 and DES are considered weak ciphers and their use
* constitutes a security risk. We recommend considering stronger
* \warning RC4 and DES are considered weak ciphers and their use
* constitutes a security risk. Arm recommends considering stronger
* ciphers instead.
*/
typedef enum {
MBEDTLS_CIPHER_ID_NONE = 0,
MBEDTLS_CIPHER_ID_NULL,
MBEDTLS_CIPHER_ID_AES,
MBEDTLS_CIPHER_ID_DES,
MBEDTLS_CIPHER_ID_3DES,
MBEDTLS_CIPHER_ID_CAMELLIA,
MBEDTLS_CIPHER_ID_BLOWFISH,
MBEDTLS_CIPHER_ID_ARC4,
MBEDTLS_CIPHER_ID_NONE = 0, /**< Placeholder to mark the end of cipher ID lists. */
MBEDTLS_CIPHER_ID_NULL, /**< The identity cipher, treated as a stream cipher. */
MBEDTLS_CIPHER_ID_AES, /**< The AES cipher. */
MBEDTLS_CIPHER_ID_DES, /**< The DES cipher. */
MBEDTLS_CIPHER_ID_3DES, /**< The Triple DES cipher. */
MBEDTLS_CIPHER_ID_CAMELLIA, /**< The Camellia cipher. */
MBEDTLS_CIPHER_ID_BLOWFISH, /**< The Blowfish cipher. */
MBEDTLS_CIPHER_ID_ARC4, /**< The RC4 cipher. */
MBEDTLS_CIPHER_ID_ARIA, /**< The Aria cipher. */
MBEDTLS_CIPHER_ID_CHACHA20, /**< The ChaCha20 cipher. */
} mbedtls_cipher_id_t;
/**
* \brief An enumeration of supported (cipher, mode) pairs.
* \brief Supported {cipher type, cipher mode} pairs.
*
* \warning ARC4 and DES are considered weak ciphers and their use
* constitutes a security risk. We recommend considering stronger
* \warning RC4 and DES are considered weak ciphers and their use
* constitutes a security risk. Arm recommends considering stronger
* ciphers instead.
*/
typedef enum {
MBEDTLS_CIPHER_NONE = 0,
MBEDTLS_CIPHER_NULL,
MBEDTLS_CIPHER_AES_128_ECB,
MBEDTLS_CIPHER_AES_192_ECB,
MBEDTLS_CIPHER_AES_256_ECB,
MBEDTLS_CIPHER_AES_128_CBC,
MBEDTLS_CIPHER_AES_192_CBC,
MBEDTLS_CIPHER_AES_256_CBC,
MBEDTLS_CIPHER_AES_128_CFB128,
MBEDTLS_CIPHER_AES_192_CFB128,
MBEDTLS_CIPHER_AES_256_CFB128,
MBEDTLS_CIPHER_AES_128_CTR,
MBEDTLS_CIPHER_AES_192_CTR,
MBEDTLS_CIPHER_AES_256_CTR,
MBEDTLS_CIPHER_AES_128_GCM,
MBEDTLS_CIPHER_AES_192_GCM,
MBEDTLS_CIPHER_AES_256_GCM,
MBEDTLS_CIPHER_CAMELLIA_128_ECB,
MBEDTLS_CIPHER_CAMELLIA_192_ECB,
MBEDTLS_CIPHER_CAMELLIA_256_ECB,
MBEDTLS_CIPHER_CAMELLIA_128_CBC,
MBEDTLS_CIPHER_CAMELLIA_192_CBC,
MBEDTLS_CIPHER_CAMELLIA_256_CBC,
MBEDTLS_CIPHER_CAMELLIA_128_CFB128,
MBEDTLS_CIPHER_CAMELLIA_192_CFB128,
MBEDTLS_CIPHER_CAMELLIA_256_CFB128,
MBEDTLS_CIPHER_CAMELLIA_128_CTR,
MBEDTLS_CIPHER_CAMELLIA_192_CTR,
MBEDTLS_CIPHER_CAMELLIA_256_CTR,
MBEDTLS_CIPHER_CAMELLIA_128_GCM,
MBEDTLS_CIPHER_CAMELLIA_192_GCM,
MBEDTLS_CIPHER_CAMELLIA_256_GCM,
MBEDTLS_CIPHER_DES_ECB,
MBEDTLS_CIPHER_DES_CBC,
MBEDTLS_CIPHER_DES_EDE_ECB,
MBEDTLS_CIPHER_DES_EDE_CBC,
MBEDTLS_CIPHER_DES_EDE3_ECB,
MBEDTLS_CIPHER_DES_EDE3_CBC,
MBEDTLS_CIPHER_BLOWFISH_ECB,
MBEDTLS_CIPHER_BLOWFISH_CBC,
MBEDTLS_CIPHER_BLOWFISH_CFB64,
MBEDTLS_CIPHER_BLOWFISH_CTR,
MBEDTLS_CIPHER_ARC4_128,
MBEDTLS_CIPHER_AES_128_CCM,
MBEDTLS_CIPHER_AES_192_CCM,
MBEDTLS_CIPHER_AES_256_CCM,
MBEDTLS_CIPHER_CAMELLIA_128_CCM,
MBEDTLS_CIPHER_CAMELLIA_192_CCM,
MBEDTLS_CIPHER_CAMELLIA_256_CCM,
MBEDTLS_CIPHER_NONE = 0, /**< Placeholder to mark the end of cipher-pair lists. */
MBEDTLS_CIPHER_NULL, /**< The identity stream cipher. */
MBEDTLS_CIPHER_AES_128_ECB, /**< AES cipher with 128-bit ECB mode. */
MBEDTLS_CIPHER_AES_192_ECB, /**< AES cipher with 192-bit ECB mode. */
MBEDTLS_CIPHER_AES_256_ECB, /**< AES cipher with 256-bit ECB mode. */
MBEDTLS_CIPHER_AES_128_CBC, /**< AES cipher with 128-bit CBC mode. */
MBEDTLS_CIPHER_AES_192_CBC, /**< AES cipher with 192-bit CBC mode. */
MBEDTLS_CIPHER_AES_256_CBC, /**< AES cipher with 256-bit CBC mode. */
MBEDTLS_CIPHER_AES_128_CFB128, /**< AES cipher with 128-bit CFB128 mode. */
MBEDTLS_CIPHER_AES_192_CFB128, /**< AES cipher with 192-bit CFB128 mode. */
MBEDTLS_CIPHER_AES_256_CFB128, /**< AES cipher with 256-bit CFB128 mode. */
MBEDTLS_CIPHER_AES_128_CTR, /**< AES cipher with 128-bit CTR mode. */
MBEDTLS_CIPHER_AES_192_CTR, /**< AES cipher with 192-bit CTR mode. */
MBEDTLS_CIPHER_AES_256_CTR, /**< AES cipher with 256-bit CTR mode. */
MBEDTLS_CIPHER_AES_128_GCM, /**< AES cipher with 128-bit GCM mode. */
MBEDTLS_CIPHER_AES_192_GCM, /**< AES cipher with 192-bit GCM mode. */
MBEDTLS_CIPHER_AES_256_GCM, /**< AES cipher with 256-bit GCM mode. */
MBEDTLS_CIPHER_CAMELLIA_128_ECB, /**< Camellia cipher with 128-bit ECB mode. */
MBEDTLS_CIPHER_CAMELLIA_192_ECB, /**< Camellia cipher with 192-bit ECB mode. */
MBEDTLS_CIPHER_CAMELLIA_256_ECB, /**< Camellia cipher with 256-bit ECB mode. */
MBEDTLS_CIPHER_CAMELLIA_128_CBC, /**< Camellia cipher with 128-bit CBC mode. */
MBEDTLS_CIPHER_CAMELLIA_192_CBC, /**< Camellia cipher with 192-bit CBC mode. */
MBEDTLS_CIPHER_CAMELLIA_256_CBC, /**< Camellia cipher with 256-bit CBC mode. */
MBEDTLS_CIPHER_CAMELLIA_128_CFB128, /**< Camellia cipher with 128-bit CFB128 mode. */
MBEDTLS_CIPHER_CAMELLIA_192_CFB128, /**< Camellia cipher with 192-bit CFB128 mode. */
MBEDTLS_CIPHER_CAMELLIA_256_CFB128, /**< Camellia cipher with 256-bit CFB128 mode. */
MBEDTLS_CIPHER_CAMELLIA_128_CTR, /**< Camellia cipher with 128-bit CTR mode. */
MBEDTLS_CIPHER_CAMELLIA_192_CTR, /**< Camellia cipher with 192-bit CTR mode. */
MBEDTLS_CIPHER_CAMELLIA_256_CTR, /**< Camellia cipher with 256-bit CTR mode. */
MBEDTLS_CIPHER_CAMELLIA_128_GCM, /**< Camellia cipher with 128-bit GCM mode. */
MBEDTLS_CIPHER_CAMELLIA_192_GCM, /**< Camellia cipher with 192-bit GCM mode. */
MBEDTLS_CIPHER_CAMELLIA_256_GCM, /**< Camellia cipher with 256-bit GCM mode. */
MBEDTLS_CIPHER_DES_ECB, /**< DES cipher with ECB mode. */
MBEDTLS_CIPHER_DES_CBC, /**< DES cipher with CBC mode. */
MBEDTLS_CIPHER_DES_EDE_ECB, /**< DES cipher with EDE ECB mode. */
MBEDTLS_CIPHER_DES_EDE_CBC, /**< DES cipher with EDE CBC mode. */
MBEDTLS_CIPHER_DES_EDE3_ECB, /**< DES cipher with EDE3 ECB mode. */
MBEDTLS_CIPHER_DES_EDE3_CBC, /**< DES cipher with EDE3 CBC mode. */
MBEDTLS_CIPHER_BLOWFISH_ECB, /**< Blowfish cipher with ECB mode. */
MBEDTLS_CIPHER_BLOWFISH_CBC, /**< Blowfish cipher with CBC mode. */
MBEDTLS_CIPHER_BLOWFISH_CFB64, /**< Blowfish cipher with CFB64 mode. */
MBEDTLS_CIPHER_BLOWFISH_CTR, /**< Blowfish cipher with CTR mode. */
MBEDTLS_CIPHER_ARC4_128, /**< RC4 cipher with 128-bit mode. */
MBEDTLS_CIPHER_AES_128_CCM, /**< AES cipher with 128-bit CCM mode. */
MBEDTLS_CIPHER_AES_192_CCM, /**< AES cipher with 192-bit CCM mode. */
MBEDTLS_CIPHER_AES_256_CCM, /**< AES cipher with 256-bit CCM mode. */
MBEDTLS_CIPHER_CAMELLIA_128_CCM, /**< Camellia cipher with 128-bit CCM mode. */
MBEDTLS_CIPHER_CAMELLIA_192_CCM, /**< Camellia cipher with 192-bit CCM mode. */
MBEDTLS_CIPHER_CAMELLIA_256_CCM, /**< Camellia cipher with 256-bit CCM mode. */
MBEDTLS_CIPHER_ARIA_128_ECB, /**< Aria cipher with 128-bit key and ECB mode. */
MBEDTLS_CIPHER_ARIA_192_ECB, /**< Aria cipher with 192-bit key and ECB mode. */
MBEDTLS_CIPHER_ARIA_256_ECB, /**< Aria cipher with 256-bit key and ECB mode. */
MBEDTLS_CIPHER_ARIA_128_CBC, /**< Aria cipher with 128-bit key and CBC mode. */
MBEDTLS_CIPHER_ARIA_192_CBC, /**< Aria cipher with 192-bit key and CBC mode. */
MBEDTLS_CIPHER_ARIA_256_CBC, /**< Aria cipher with 256-bit key and CBC mode. */
MBEDTLS_CIPHER_ARIA_128_CFB128, /**< Aria cipher with 128-bit key and CFB-128 mode. */
MBEDTLS_CIPHER_ARIA_192_CFB128, /**< Aria cipher with 192-bit key and CFB-128 mode. */
MBEDTLS_CIPHER_ARIA_256_CFB128, /**< Aria cipher with 256-bit key and CFB-128 mode. */
MBEDTLS_CIPHER_ARIA_128_CTR, /**< Aria cipher with 128-bit key and CTR mode. */
MBEDTLS_CIPHER_ARIA_192_CTR, /**< Aria cipher with 192-bit key and CTR mode. */
MBEDTLS_CIPHER_ARIA_256_CTR, /**< Aria cipher with 256-bit key and CTR mode. */
MBEDTLS_CIPHER_ARIA_128_GCM, /**< Aria cipher with 128-bit key and GCM mode. */
MBEDTLS_CIPHER_ARIA_192_GCM, /**< Aria cipher with 192-bit key and GCM mode. */
MBEDTLS_CIPHER_ARIA_256_GCM, /**< Aria cipher with 256-bit key and GCM mode. */
MBEDTLS_CIPHER_ARIA_128_CCM, /**< Aria cipher with 128-bit key and CCM mode. */
MBEDTLS_CIPHER_ARIA_192_CCM, /**< Aria cipher with 192-bit key and CCM mode. */
MBEDTLS_CIPHER_ARIA_256_CCM, /**< Aria cipher with 256-bit key and CCM mode. */
MBEDTLS_CIPHER_AES_128_OFB, /**< AES 128-bit cipher in OFB mode. */
MBEDTLS_CIPHER_AES_192_OFB, /**< AES 192-bit cipher in OFB mode. */
MBEDTLS_CIPHER_AES_256_OFB, /**< AES 256-bit cipher in OFB mode. */
MBEDTLS_CIPHER_AES_128_XTS, /**< AES 128-bit cipher in XTS block mode. */
MBEDTLS_CIPHER_AES_256_XTS, /**< AES 256-bit cipher in XTS block mode. */
MBEDTLS_CIPHER_CHACHA20, /**< ChaCha20 stream cipher. */
MBEDTLS_CIPHER_CHACHA20_POLY1305, /**< ChaCha20-Poly1305 AEAD cipher. */
} mbedtls_cipher_type_t;
/** Supported cipher modes. */
typedef enum {
MBEDTLS_MODE_NONE = 0,
MBEDTLS_MODE_ECB,
MBEDTLS_MODE_CBC,
MBEDTLS_MODE_CFB,
MBEDTLS_MODE_OFB, /* Unused! */
MBEDTLS_MODE_CTR,
MBEDTLS_MODE_GCM,
MBEDTLS_MODE_STREAM,
MBEDTLS_MODE_CCM,
MBEDTLS_MODE_NONE = 0, /**< None. */
MBEDTLS_MODE_ECB, /**< The ECB cipher mode. */
MBEDTLS_MODE_CBC, /**< The CBC cipher mode. */
MBEDTLS_MODE_CFB, /**< The CFB cipher mode. */
MBEDTLS_MODE_OFB, /**< The OFB cipher mode. */
MBEDTLS_MODE_CTR, /**< The CTR cipher mode. */
MBEDTLS_MODE_GCM, /**< The GCM cipher mode. */
MBEDTLS_MODE_STREAM, /**< The stream cipher mode. */
MBEDTLS_MODE_CCM, /**< The CCM cipher mode. */
MBEDTLS_MODE_XTS, /**< The XTS cipher mode. */
MBEDTLS_MODE_CHACHAPOLY, /**< The ChaCha-Poly cipher mode. */
} mbedtls_cipher_mode_t;
/** Supported cipher padding types. */
......@@ -163,8 +198,8 @@ typedef enum {
MBEDTLS_PADDING_PKCS7 = 0, /**< PKCS7 padding (default). */
MBEDTLS_PADDING_ONE_AND_ZEROS, /**< ISO/IEC 7816-4 padding. */
MBEDTLS_PADDING_ZEROS_AND_LEN, /**< ANSI X.923 padding. */
MBEDTLS_PADDING_ZEROS, /**< zero padding (not reversible). */
MBEDTLS_PADDING_NONE, /**< never pad (full blocks only). */
MBEDTLS_PADDING_ZEROS, /**< Zero padding (not reversible). */
MBEDTLS_PADDING_NONE, /**< Never pad (full blocks only). */
} mbedtls_cipher_padding_t;
/** Type of operation. */
......@@ -204,7 +239,8 @@ typedef struct mbedtls_cmac_context_t mbedtls_cmac_context_t;
* Cipher information. Allows calling cipher functions
* in a generic way.
*/
typedef struct {
typedef struct mbedtls_cipher_info_t
{
/** Full cipher identifier. For example,
* MBEDTLS_CIPHER_AES_256_CBC.
*/
......@@ -228,7 +264,10 @@ typedef struct {
*/
unsigned int iv_size;
/** Flags to set. For example, if the cipher supports variable IV sizes or variable key sizes. */
/** Bitflag comprised of MBEDTLS_CIPHER_VARIABLE_IV_LEN and
* MBEDTLS_CIPHER_VARIABLE_KEY_LEN indicating whether the
* cipher supports variable IV or variable key sizes, respectively.
*/
int flags;
/** The block size, in Bytes. */
......@@ -242,7 +281,8 @@ typedef struct {
/**
* Generic cipher context.
*/
typedef struct {
typedef struct mbedtls_cipher_context_t
{
/** Information about the associated cipher. */
const mbedtls_cipher_info_t *cipher_info;
......@@ -268,7 +308,8 @@ typedef struct {
/** Number of Bytes that have not been processed yet. */
size_t unprocessed_len;
/** Current IV or NONCE_COUNTER for CTR-mode. */
/** Current IV or NONCE_COUNTER for CTR-mode, data unit (or sector) number
* for XTS-mode. */
unsigned char iv[MBEDTLS_MAX_IV_LENGTH];
/** IV size in Bytes, for ciphers with variable-length IVs. */
......@@ -296,10 +337,12 @@ const int *mbedtls_cipher_list( void );
* \brief This function retrieves the cipher-information
* structure associated with the given cipher name.
*
* \param cipher_name Name of the cipher to search for.
* \param cipher_name Name of the cipher to search for. This must not be
* \c NULL.
*
* \return The cipher information structure associated with the
* given \p cipher_name, or NULL if not found.
* given \p cipher_name.
* \return \c NULL if the associated cipher information is not found.
*/
const mbedtls_cipher_info_t *mbedtls_cipher_info_from_string( const char *cipher_name );
......@@ -310,7 +353,8 @@ const mbedtls_cipher_info_t *mbedtls_cipher_info_from_string( const char *cipher
* \param cipher_type Type of the cipher to search for.
*
* \return The cipher information structure associated with the
* given \p cipher_type, or NULL if not found.
* given \p cipher_type.
* \return \c NULL if the associated cipher information is not found.
*/
const mbedtls_cipher_info_t *mbedtls_cipher_info_from_type( const mbedtls_cipher_type_t cipher_type );
......@@ -325,7 +369,8 @@ const mbedtls_cipher_info_t *mbedtls_cipher_info_from_type( const mbedtls_cipher
* \param mode The cipher mode. For example, #MBEDTLS_MODE_CBC.
*
* \return The cipher information structure associated with the
* given \p cipher_id, or NULL if not found.
* given \p cipher_id.
* \return \c NULL if the associated cipher information is not found.
*/
const mbedtls_cipher_info_t *mbedtls_cipher_info_from_values( const mbedtls_cipher_id_t cipher_id,
int key_bitlen,
......@@ -333,6 +378,8 @@ const mbedtls_cipher_info_t *mbedtls_cipher_info_from_values( const mbedtls_ciph
/**
* \brief This function initializes a \p cipher_context as NONE.
*
* \param ctx The context to be initialized. This must not be \c NULL.
*/
void mbedtls_cipher_init( mbedtls_cipher_context_t *ctx );
......@@ -340,6 +387,10 @@ void mbedtls_cipher_init( mbedtls_cipher_context_t *ctx );
* \brief This function frees and clears the cipher-specific
* context of \p ctx. Freeing \p ctx itself remains the
* responsibility of the caller.
*
* \param ctx The context to be freed. If this is \c NULL, the
* function has no effect, otherwise this must point to an
* initialized context.
*/
void mbedtls_cipher_free( mbedtls_cipher_context_t *ctx );
......@@ -349,31 +400,35 @@ void mbedtls_cipher_free( mbedtls_cipher_context_t *ctx );
* structure with the appropriate values. It also clears
* the structure.
*
* \param ctx The context to initialize. May not be NULL.
* \param ctx The context to initialize. This must be initialized.
* \param cipher_info The cipher to use.
*
* \return \c 0 on success,
* #MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA on parameter failure,
* #MBEDTLS_ERR_CIPHER_ALLOC_FAILED if allocation of the
* cipher-specific context failed.
* \return \c 0 on success.
* \return #MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA on
* parameter-verification failure.
* \return #MBEDTLS_ERR_CIPHER_ALLOC_FAILED if allocation of the
* cipher-specific context fails.
*
* \internal Currently, the function also clears the structure.
* In future versions, the caller will be required to call
* mbedtls_cipher_init() on the structure first.
*/
int mbedtls_cipher_setup( mbedtls_cipher_context_t *ctx, const mbedtls_cipher_info_t *cipher_info );
int mbedtls_cipher_setup( mbedtls_cipher_context_t *ctx,
const mbedtls_cipher_info_t *cipher_info );
/**
* \brief This function returns the block size of the given cipher.
*
* \param ctx The context of the cipher. Must be initialized.
* \param ctx The context of the cipher. This must be initialized.
*
* \return The size of the blocks of the cipher, or zero if \p ctx
* has not been initialized.
* \return The block size of the underlying cipher.
* \return \c 0 if \p ctx has not been initialized.
*/
static inline unsigned int mbedtls_cipher_get_block_size( const mbedtls_cipher_context_t *ctx )
static inline unsigned int mbedtls_cipher_get_block_size(
const mbedtls_cipher_context_t *ctx )
{
if( NULL == ctx || NULL == ctx->cipher_info )
MBEDTLS_INTERNAL_VALIDATE_RET( ctx != NULL, 0 );
if( ctx->cipher_info == NULL )
return 0;
return ctx->cipher_info->block_size;
......@@ -383,14 +438,16 @@ static inline unsigned int mbedtls_cipher_get_block_size( const mbedtls_cipher_c
* \brief This function returns the mode of operation for
* the cipher. For example, MBEDTLS_MODE_CBC.
*
* \param ctx The context of the cipher. Must be initialized.
* \param ctx The context of the cipher. This must be initialized.
*
* \return The mode of operation, or #MBEDTLS_MODE_NONE if
* \p ctx has not been initialized.
* \return The mode of operation.
* \return #MBEDTLS_MODE_NONE if \p ctx has not been initialized.
*/
static inline mbedtls_cipher_mode_t mbedtls_cipher_get_cipher_mode( const mbedtls_cipher_context_t *ctx )
static inline mbedtls_cipher_mode_t mbedtls_cipher_get_cipher_mode(
const mbedtls_cipher_context_t *ctx )
{
if( NULL == ctx || NULL == ctx->cipher_info )
MBEDTLS_INTERNAL_VALIDATE_RET( ctx != NULL, MBEDTLS_MODE_NONE );
if( ctx->cipher_info == NULL )
return MBEDTLS_MODE_NONE;
return ctx->cipher_info->mode;
......@@ -400,15 +457,17 @@ static inline mbedtls_cipher_mode_t mbedtls_cipher_get_cipher_mode( const mbedtl
* \brief This function returns the size of the IV or nonce
* of the cipher, in Bytes.
*
* \param ctx The context of the cipher. Must be initialized.
* \param ctx The context of the cipher. This must be initialized.
*
* \return <ul><li>If no IV has been set: the recommended IV size.
* 0 for ciphers not using IV or nonce.</li>
* <li>If IV has already been set: the actual size.</li></ul>
* \return The recommended IV size if no IV has been set.
* \return \c 0 for ciphers not using an IV or a nonce.
* \return The actual size if an IV has been set.
*/
static inline int mbedtls_cipher_get_iv_size( const mbedtls_cipher_context_t *ctx )
static inline int mbedtls_cipher_get_iv_size(
const mbedtls_cipher_context_t *ctx )
{
if( NULL == ctx || NULL == ctx->cipher_info )
MBEDTLS_INTERNAL_VALIDATE_RET( ctx != NULL, 0 );
if( ctx->cipher_info == NULL )
return 0;
if( ctx->iv_size != 0 )
......@@ -420,14 +479,17 @@ static inline int mbedtls_cipher_get_iv_size( const mbedtls_cipher_context_t *ct
/**
* \brief This function returns the type of the given cipher.
*
* \param ctx The context of the cipher. Must be initialized.
* \param ctx The context of the cipher. This must be initialized.
*
* \return The type of the cipher, or #MBEDTLS_CIPHER_NONE if
* \p ctx has not been initialized.
* \return The type of the cipher.
* \return #MBEDTLS_CIPHER_NONE if \p ctx has not been initialized.
*/
static inline mbedtls_cipher_type_t mbedtls_cipher_get_type( const mbedtls_cipher_context_t *ctx )
static inline mbedtls_cipher_type_t mbedtls_cipher_get_type(
const mbedtls_cipher_context_t *ctx )
{
if( NULL == ctx || NULL == ctx->cipher_info )
MBEDTLS_INTERNAL_VALIDATE_RET(
ctx != NULL, MBEDTLS_CIPHER_NONE );
if( ctx->cipher_info == NULL )
return MBEDTLS_CIPHER_NONE;
return ctx->cipher_info->type;
......@@ -437,14 +499,16 @@ static inline mbedtls_cipher_type_t mbedtls_cipher_get_type( const mbedtls_ciphe
* \brief This function returns the name of the given cipher
* as a string.
*
* \param ctx The context of the cipher. Must be initialized.
* \param ctx The context of the cipher. This must be initialized.
*
* \return The name of the cipher, or NULL if \p ctx has not
* been not initialized.
* \return The name of the cipher.
* \return NULL if \p ctx has not been not initialized.
*/
static inline const char *mbedtls_cipher_get_name( const mbedtls_cipher_context_t *ctx )
static inline const char *mbedtls_cipher_get_name(
const mbedtls_cipher_context_t *ctx )
{
if( NULL == ctx || NULL == ctx->cipher_info )
MBEDTLS_INTERNAL_VALIDATE_RET( ctx != NULL, 0 );
if( ctx->cipher_info == NULL )
return 0;
return ctx->cipher_info->name;
......@@ -453,15 +517,18 @@ static inline const char *mbedtls_cipher_get_name( const mbedtls_cipher_context_
/**
* \brief This function returns the key length of the cipher.
*
* \param ctx The context of the cipher. Must be initialized.
* \param ctx The context of the cipher. This must be initialized.
*
* \return The key length of the cipher in bits, or
* #MBEDTLS_KEY_LENGTH_NONE if ctx \p has not been
* \return The key length of the cipher in bits.
* \return #MBEDTLS_KEY_LENGTH_NONE if ctx \p has not been
* initialized.
*/
static inline int mbedtls_cipher_get_key_bitlen( const mbedtls_cipher_context_t *ctx )
static inline int mbedtls_cipher_get_key_bitlen(
const mbedtls_cipher_context_t *ctx )
{
if( NULL == ctx || NULL == ctx->cipher_info )
MBEDTLS_INTERNAL_VALIDATE_RET(
ctx != NULL, MBEDTLS_KEY_LENGTH_NONE );
if( ctx->cipher_info == NULL )
return MBEDTLS_KEY_LENGTH_NONE;
return (int) ctx->cipher_info->key_bitlen;
......@@ -470,15 +537,17 @@ static inline int mbedtls_cipher_get_key_bitlen( const mbedtls_cipher_context_t
/**
* \brief This function returns the operation of the given cipher.
*
* \param ctx The context of the cipher. Must be initialized.
* \param ctx The context of the cipher. This must be initialized.
*
* \return The type of operation: #MBEDTLS_ENCRYPT or
* #MBEDTLS_DECRYPT, or #MBEDTLS_OPERATION_NONE if \p ctx
* has not been initialized.
* \return The type of operation: #MBEDTLS_ENCRYPT or #MBEDTLS_DECRYPT.
* \return #MBEDTLS_OPERATION_NONE if \p ctx has not been initialized.
*/
static inline mbedtls_operation_t mbedtls_cipher_get_operation( const mbedtls_cipher_context_t *ctx )
static inline mbedtls_operation_t mbedtls_cipher_get_operation(
const mbedtls_cipher_context_t *ctx )
{
if( NULL == ctx || NULL == ctx->cipher_info )
MBEDTLS_INTERNAL_VALIDATE_RET(
ctx != NULL, MBEDTLS_OPERATION_NONE );
if( ctx->cipher_info == NULL )
return MBEDTLS_OPERATION_NONE;
return ctx->operation;
......@@ -487,20 +556,23 @@ static inline mbedtls_operation_t mbedtls_cipher_get_operation( const mbedtls_ci
/**
* \brief This function sets the key to use with the given context.
*
* \param ctx The generic cipher context. May not be NULL. Must have
* been initialized using mbedtls_cipher_info_from_type()
* or mbedtls_cipher_info_from_string().
* \param key The key to use.
* \param key_bitlen The key length to use, in bits.
* \param ctx The generic cipher context. This must be initialized and
* bound to a cipher information structure.
* \param key The key to use. This must be a readable buffer of at
* least \p key_bitlen Bits.
* \param key_bitlen The key length to use, in Bits.
* \param operation The operation that the key will be used for:
* #MBEDTLS_ENCRYPT or #MBEDTLS_DECRYPT.
*
* \returns \c 0 on success, #MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA if
* parameter verification fails, or a cipher-specific
* error code.
* \return \c 0 on success.
* \return #MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA on
* parameter-verification failure.
* \return A cipher-specific error code on failure.
*/
int mbedtls_cipher_setkey( mbedtls_cipher_context_t *ctx, const unsigned char *key,
int key_bitlen, const mbedtls_operation_t operation );
int mbedtls_cipher_setkey( mbedtls_cipher_context_t *ctx,
const unsigned char *key,
int key_bitlen,
const mbedtls_operation_t operation );
#if defined(MBEDTLS_CIPHER_MODE_WITH_PADDING)
/**
......@@ -509,59 +581,71 @@ int mbedtls_cipher_setkey( mbedtls_cipher_context_t *ctx, const unsigned char *k
*
* The default passing mode is PKCS7 padding.
*
* \param ctx The generic cipher context.
* \param ctx The generic cipher context. This must be initialized and
* bound to a cipher information structure.
* \param mode The padding mode.
*
* \returns \c 0 on success, #MBEDTLS_ERR_CIPHER_FEATURE_UNAVAILABLE
* if the selected padding mode is not supported, or
* #MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA if the cipher mode
* \return \c 0 on success.
* \return #MBEDTLS_ERR_CIPHER_FEATURE_UNAVAILABLE
* if the selected padding mode is not supported.
* \return #MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA if the cipher mode
* does not support padding.
*/
int mbedtls_cipher_set_padding_mode( mbedtls_cipher_context_t *ctx, mbedtls_cipher_padding_t mode );
int mbedtls_cipher_set_padding_mode( mbedtls_cipher_context_t *ctx,
mbedtls_cipher_padding_t mode );
#endif /* MBEDTLS_CIPHER_MODE_WITH_PADDING */
/**
* \brief This function sets the initialization vector (IV)
* or nonce.
*
* \param ctx The generic cipher context.
* \param iv The IV to use, or NONCE_COUNTER for CTR-mode ciphers.
* \note Some ciphers do not use IVs nor nonce. For these
* ciphers, this function has no effect.
*
* \param ctx The generic cipher context. This must be initialized and
* bound to a cipher information structure.
* \param iv The IV to use, or NONCE_COUNTER for CTR-mode ciphers. This
* must be a readable buffer of at least \p iv_len Bytes.
* \param iv_len The IV length for ciphers with variable-size IV.
* This parameter is discarded by ciphers with fixed-size IV.
*
* \returns \c 0 on success, or #MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA
*
* \note Some ciphers do not use IVs nor nonce. For these
* ciphers, this function has no effect.
* \return \c 0 on success.
* \return #MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA on
* parameter-verification failure.
*/
int mbedtls_cipher_set_iv( mbedtls_cipher_context_t *ctx,
const unsigned char *iv, size_t iv_len );
const unsigned char *iv,
size_t iv_len );
/**
* \brief This function resets the cipher state.
*
* \param ctx The generic cipher context.
* \param ctx The generic cipher context. This must be initialized.
*
* \returns \c 0 on success, #MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA
* if parameter verification fails.
* \return \c 0 on success.
* \return #MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA on
* parameter-verification failure.
*/
int mbedtls_cipher_reset( mbedtls_cipher_context_t *ctx );
#if defined(MBEDTLS_GCM_C)
#if defined(MBEDTLS_GCM_C) || defined(MBEDTLS_CHACHAPOLY_C)
/**
* \brief This function adds additional data for AEAD ciphers.
* Only supported with GCM. Must be called
* exactly once, after mbedtls_cipher_reset().
* Currently supported with GCM and ChaCha20+Poly1305.
* This must be called exactly once, after
* mbedtls_cipher_reset().
*
* \param ctx The generic cipher context.
* \param ad The additional data to use.
* \param ad_len the Length of \p ad.
* \param ctx The generic cipher context. This must be initialized.
* \param ad The additional data to use. This must be a readable
* buffer of at least \p ad_len Bytes.
* \param ad_len the Length of \p ad Bytes.
*
* \return \c 0 on success, or a specific error code on failure.
* \return \c 0 on success.
* \return A specific error code on failure.
*/
int mbedtls_cipher_update_ad( mbedtls_cipher_context_t *ctx,
const unsigned char *ad, size_t ad_len );
#endif /* MBEDTLS_GCM_C */
#endif /* MBEDTLS_GCM_C || MBEDTLS_CHACHAPOLY_C */
/**
* \brief The generic cipher update function. It encrypts or
......@@ -573,25 +657,29 @@ int mbedtls_cipher_update_ad( mbedtls_cipher_context_t *ctx,
* Exception: For MBEDTLS_MODE_ECB, expects a single block
* in size. For example, 16 Bytes for AES.
*
* \param ctx The generic cipher context.
* \param input The buffer holding the input data.
* \note If the underlying cipher is used in GCM mode, all calls
* to this function, except for the last one before
* mbedtls_cipher_finish(), must have \p ilen as a
* multiple of the block size of the cipher.
*
* \param ctx The generic cipher context. This must be initialized and
* bound to a key.
* \param input The buffer holding the input data. This must be a
* readable buffer of at least \p ilen Bytes.
* \param ilen The length of the input data.
* \param output The buffer for the output data. Must be able to hold at
* least \p ilen + block_size. Must not be the same buffer
* as input.
* \param output The buffer for the output data. This must be able to
* hold at least `ilen + block_size`. This must not be the
* same buffer as \p input.
* \param olen The length of the output data, to be updated with the
* actual number of Bytes written.
* actual number of Bytes written. This must not be
* \c NULL.
*
* \returns \c 0 on success, #MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA if
* parameter verification fails,
* #MBEDTLS_ERR_CIPHER_FEATURE_UNAVAILABLE on an
* unsupported mode for a cipher, or a cipher-specific
* error code.
*
* \note If the underlying cipher is GCM, all calls to this
* function, except the last one before
* mbedtls_cipher_finish(). Must have \p ilen as a
* multiple of the block_size.
* \return \c 0 on success.
* \return #MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA on
* parameter-verification failure.
* \return #MBEDTLS_ERR_CIPHER_FEATURE_UNAVAILABLE on an
* unsupported mode for a cipher.
* \return A cipher-specific error code on failure.
*/
int mbedtls_cipher_update( mbedtls_cipher_context_t *ctx, const unsigned char *input,
size_t ilen, unsigned char *output, size_t *olen );
......@@ -602,78 +690,94 @@ int mbedtls_cipher_update( mbedtls_cipher_context_t *ctx, const unsigned char *i
* contained in it is padded to the size of
* the last block, and written to the \p output buffer.
*
* \param ctx The generic cipher context.
* \param output The buffer to write data to. Needs block_size available.
* \param ctx The generic cipher context. This must be initialized and
* bound to a key.
* \param output The buffer to write data to. This needs to be a writable
* buffer of at least \p block_size Bytes.
* \param olen The length of the data written to the \p output buffer.
* This may not be \c NULL.
*
* \returns \c 0 on success, #MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA if
* parameter verification fails,
* #MBEDTLS_ERR_CIPHER_FULL_BLOCK_EXPECTED if decryption
* expected a full block but was not provided one,
* #MBEDTLS_ERR_CIPHER_INVALID_PADDING on invalid padding
* while decrypting, or a cipher-specific error code
* on failure for any other reason.
* \return \c 0 on success.
* \return #MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA on
* parameter-verification failure.
* \return #MBEDTLS_ERR_CIPHER_FULL_BLOCK_EXPECTED on decryption
* expecting a full block but not receiving one.
* \return #MBEDTLS_ERR_CIPHER_INVALID_PADDING on invalid padding
* while decrypting.
* \return A cipher-specific error code on failure.
*/
int mbedtls_cipher_finish( mbedtls_cipher_context_t *ctx,
unsigned char *output, size_t *olen );
#if defined(MBEDTLS_GCM_C)
#if defined(MBEDTLS_GCM_C) || defined(MBEDTLS_CHACHAPOLY_C)
/**
* \brief This function writes a tag for AEAD ciphers.
* Only supported with GCM.
* Must be called after mbedtls_cipher_finish().
*
* \param ctx The generic cipher context.
* \param tag The buffer to write the tag to.
* Currently supported with GCM and ChaCha20+Poly1305.
* This must be called after mbedtls_cipher_finish().
*
* \param ctx The generic cipher context. This must be initialized,
* bound to a key, and have just completed a cipher
* operation through mbedtls_cipher_finish() the tag for
* which should be written.
* \param tag The buffer to write the tag to. This must be a writable
* buffer of at least \p tag_len Bytes.
* \param tag_len The length of the tag to write.
*
* \return \c 0 on success, or a specific error code on failure.
* \return \c 0 on success.
* \return A specific error code on failure.
*/
int mbedtls_cipher_write_tag( mbedtls_cipher_context_t *ctx,
unsigned char *tag, size_t tag_len );
/**
* \brief This function checks the tag for AEAD ciphers.
* Only supported with GCM.
* Must be called after mbedtls_cipher_finish().
* Currently supported with GCM and ChaCha20+Poly1305.
* This must be called after mbedtls_cipher_finish().
*
* \param ctx The generic cipher context.
* \param tag The buffer holding the tag.
* \param ctx The generic cipher context. This must be initialized.
* \param tag The buffer holding the tag. This must be a readable
* buffer of at least \p tag_len Bytes.
* \param tag_len The length of the tag to check.
*
* \return \c 0 on success, or a specific error code on failure.
* \return \c 0 on success.
* \return A specific error code on failure.
*/
int mbedtls_cipher_check_tag( mbedtls_cipher_context_t *ctx,
const unsigned char *tag, size_t tag_len );
#endif /* MBEDTLS_GCM_C */
#endif /* MBEDTLS_GCM_C || MBEDTLS_CHACHAPOLY_C */
/**
* \brief The generic all-in-one encryption/decryption function,
* for all ciphers except AEAD constructs.
*
* \param ctx The generic cipher context.
* \param ctx The generic cipher context. This must be initialized.
* \param iv The IV to use, or NONCE_COUNTER for CTR-mode ciphers.
* This must be a readable buffer of at least \p iv_len
* Bytes.
* \param iv_len The IV length for ciphers with variable-size IV.
* This parameter is discarded by ciphers with fixed-size
* IV.
* \param input The buffer holding the input data.
* \param ilen The length of the input data.
* \param output The buffer for the output data. Must be able to hold at
* least \p ilen + block_size. Must not be the same buffer
* as input.
* \param input The buffer holding the input data. This must be a
* readable buffer of at least \p ilen Bytes.
* \param ilen The length of the input data in Bytes.
* \param output The buffer for the output data. This must be able to
* hold at least `ilen + block_size`. This must not be the
* same buffer as \p input.
* \param olen The length of the output data, to be updated with the
* actual number of Bytes written.
* actual number of Bytes written. This must not be
* \c NULL.
*
* \note Some ciphers do not use IVs nor nonce. For these
* ciphers, use \p iv = NULL and \p iv_len = 0.
*
* \returns \c 0 on success, or
* #MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA, or
* #MBEDTLS_ERR_CIPHER_FULL_BLOCK_EXPECTED if decryption
* expected a full block but was not provided one, or
* #MBEDTLS_ERR_CIPHER_INVALID_PADDING on invalid padding
* while decrypting, or a cipher-specific error code on
* failure for any other reason.
* \return \c 0 on success.
* \return #MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA on
* parameter-verification failure.
* \return #MBEDTLS_ERR_CIPHER_FULL_BLOCK_EXPECTED on decryption
* expecting a full block but not receiving one.
* \return #MBEDTLS_ERR_CIPHER_INVALID_PADDING on invalid padding
* while decrypting.
* \return A cipher-specific error code on failure.
*/
int mbedtls_cipher_crypt( mbedtls_cipher_context_t *ctx,
const unsigned char *iv, size_t iv_len,
......@@ -684,24 +788,32 @@ int mbedtls_cipher_crypt( mbedtls_cipher_context_t *ctx,
/**
* \brief The generic autenticated encryption (AEAD) function.
*
* \param ctx The generic cipher context.
* \param ctx The generic cipher context. This must be initialized and
* bound to a key.
* \param iv The IV to use, or NONCE_COUNTER for CTR-mode ciphers.
* This must be a readable buffer of at least \p iv_len
* Bytes.
* \param iv_len The IV length for ciphers with variable-size IV.
* This parameter is discarded by ciphers with fixed-size IV.
* \param ad The additional data to authenticate.
* \param ad The additional data to authenticate. This must be a
* readable buffer of at least \p ad_len Bytes.
* \param ad_len The length of \p ad.
* \param input The buffer holding the input data.
* \param input The buffer holding the input data. This must be a
* readable buffer of at least \p ilen Bytes.
* \param ilen The length of the input data.
* \param output The buffer for the output data.
* Must be able to hold at least \p ilen.
* \param output The buffer for the output data. This must be able to
* hold at least \p ilen Bytes.
* \param olen The length of the output data, to be updated with the
* actual number of Bytes written.
* \param tag The buffer for the authentication tag.
* actual number of Bytes written. This must not be
* \c NULL.
* \param tag The buffer for the authentication tag. This must be a
* writable buffer of at least \p tag_len Bytes.
* \param tag_len The desired length of the authentication tag.
*
* \returns \c 0 on success, or
* #MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA, or
* a cipher-specific error code.
* \return \c 0 on success.
* \return #MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA on
* parameter-verification failure.
* \return A cipher-specific error code on failure.
*/
int mbedtls_cipher_auth_encrypt( mbedtls_cipher_context_t *ctx,
const unsigned char *iv, size_t iv_len,
......@@ -713,29 +825,37 @@ int mbedtls_cipher_auth_encrypt( mbedtls_cipher_context_t *ctx,
/**
* \brief The generic autenticated decryption (AEAD) function.
*
* \param ctx The generic cipher context.
* \note If the data is not authentic, then the output buffer
* is zeroed out to prevent the unauthentic plaintext being
* used, making this interface safer.
*
* \param ctx The generic cipher context. This must be initialized and
* and bound to a key.
* \param iv The IV to use, or NONCE_COUNTER for CTR-mode ciphers.
* This must be a readable buffer of at least \p iv_len
* Bytes.
* \param iv_len The IV length for ciphers with variable-size IV.
* This parameter is discarded by ciphers with fixed-size IV.
* \param ad The additional data to be authenticated.
* \param ad The additional data to be authenticated. This must be a
* readable buffer of at least \p ad_len Bytes.
* \param ad_len The length of \p ad.
* \param input The buffer holding the input data.
* \param input The buffer holding the input data. This must be a
* readable buffer of at least \p ilen Bytes.
* \param ilen The length of the input data.
* \param output The buffer for the output data.
* Must be able to hold at least \p ilen.
* This must be able to hold at least \p ilen Bytes.
* \param olen The length of the output data, to be updated with the
* actual number of Bytes written.
* \param tag The buffer holding the authentication tag.
* actual number of Bytes written. This must not be
* \c NULL.
* \param tag The buffer holding the authentication tag. This must be
* a readable buffer of at least \p tag_len Bytes.
* \param tag_len The length of the authentication tag.
*
* \returns \c 0 on success, or
* #MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA, or
* #MBEDTLS_ERR_CIPHER_AUTH_FAILED if data is not authentic,
* or a cipher-specific error code on failure for any other reason.
*
* \note If the data is not authentic, then the output buffer
* is zeroed out to prevent the unauthentic plaintext being
* used, making this interface safer.
* \return \c 0 on success.
* \return #MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA on
* parameter-verification failure.
* \return #MBEDTLS_ERR_CIPHER_AUTH_FAILED if data is not authentic.
* \return A cipher-specific error code on failure.
*/
int mbedtls_cipher_auth_decrypt( mbedtls_cipher_context_t *ctx,
const unsigned char *iv, size_t iv_len,
......
......@@ -64,6 +64,14 @@ struct mbedtls_cipher_base_t
unsigned char *output );
#endif
#if defined(MBEDTLS_CIPHER_MODE_OFB)
/** Encrypt using OFB (Full length) */
int (*ofb_func)( void *ctx, size_t length, size_t *iv_off,
unsigned char *iv,
const unsigned char *input,
unsigned char *output );
#endif
#if defined(MBEDTLS_CIPHER_MODE_CTR)
/** Encrypt using CTR */
int (*ctr_func)( void *ctx, size_t length, size_t *nc_off,
......@@ -71,6 +79,13 @@ struct mbedtls_cipher_base_t
const unsigned char *input, unsigned char *output );
#endif
#if defined(MBEDTLS_CIPHER_MODE_XTS)
/** Encrypt or decrypt using XTS. */
int (*xts_func)( void *ctx, mbedtls_operation_t mode, size_t length,
const unsigned char data_unit[16],
const unsigned char *input, unsigned char *output );
#endif
#if defined(MBEDTLS_CIPHER_MODE_STREAM)
/** Encrypt using STREAM */
int (*stream_func)( void *ctx, size_t length,
......
/**
* \file cmac.h
*
* \brief The Cipher-based Message Authentication Code (CMAC) Mode for
* Authentication.
* \brief This file contains CMAC definitions and functions.
*
* The Cipher-based Message Authentication Code (CMAC) Mode for
* Authentication is defined in <em>RFC-4493: The AES-CMAC Algorithm</em>.
*/
/*
* Copyright (C) 2015-2018, Arm Limited (or its affiliates), All Rights Reserved
......@@ -26,21 +28,28 @@
#ifndef MBEDTLS_CMAC_H
#define MBEDTLS_CMAC_H
#if !defined(MBEDTLS_CONFIG_FILE)
#include "config.h"
#else
#include MBEDTLS_CONFIG_FILE
#endif
#include "cipher.h"
#ifdef __cplusplus
extern "C" {
#endif
/* MBEDTLS_ERR_CMAC_HW_ACCEL_FAILED is deprecated and should not be used. */
#define MBEDTLS_ERR_CMAC_HW_ACCEL_FAILED -0x007A /**< CMAC hardware accelerator failed. */
#define MBEDTLS_AES_BLOCK_SIZE 16
#define MBEDTLS_DES3_BLOCK_SIZE 8
#if defined(MBEDTLS_AES_C)
#define MBEDTLS_CIPHER_BLKSIZE_MAX 16 /* The longest block used by CMAC is that of AES. */
#define MBEDTLS_CIPHER_BLKSIZE_MAX 16 /**< The longest block used by CMAC is that of AES. */
#else
#define MBEDTLS_CIPHER_BLKSIZE_MAX 8 /* The longest block used by CMAC is that of 3DES. */
#define MBEDTLS_CIPHER_BLKSIZE_MAX 8 /**< The longest block used by CMAC is that of 3DES. */
#endif
#if !defined(MBEDTLS_CMAC_ALT)
......@@ -61,22 +70,25 @@ struct mbedtls_cmac_context_t
size_t unprocessed_len;
};
#else /* !MBEDTLS_CMAC_ALT */
#include "cmac_alt.h"
#endif /* !MBEDTLS_CMAC_ALT */
/**
* \brief This function sets the CMAC key, and prepares to authenticate
* the input data.
* Must be called with an initialized cipher context.
*
* \param ctx The cipher context used for the CMAC operation, initialized
* as one of the following types:<ul>
* <li>MBEDTLS_CIPHER_AES_128_ECB</li>
* <li>MBEDTLS_CIPHER_AES_192_ECB</li>
* <li>MBEDTLS_CIPHER_AES_256_ECB</li>
* <li>MBEDTLS_CIPHER_DES_EDE3_ECB</li></ul>
* as one of the following types: MBEDTLS_CIPHER_AES_128_ECB,
* MBEDTLS_CIPHER_AES_192_ECB, MBEDTLS_CIPHER_AES_256_ECB,
* or MBEDTLS_CIPHER_DES_EDE3_ECB.
* \param key The CMAC key.
* \param keybits The length of the CMAC key in bits.
* Must be supported by the cipher.
*
* \return \c 0 on success, or a cipher-specific error code.
* \return \c 0 on success.
* \return A cipher-specific error code on failure.
*/
int mbedtls_cipher_cmac_starts( mbedtls_cipher_context_t *ctx,
const unsigned char *key, size_t keybits );
......@@ -93,8 +105,9 @@ int mbedtls_cipher_cmac_starts( mbedtls_cipher_context_t *ctx,
* \param input The buffer holding the input data.
* \param ilen The length of the input data.
*
* \returns \c 0 on success, or #MBEDTLS_ERR_MD_BAD_INPUT_DATA
* if parameter verification fails.
* \return \c 0 on success.
* \return #MBEDTLS_ERR_MD_BAD_INPUT_DATA
* if parameter verification fails.
*/
int mbedtls_cipher_cmac_update( mbedtls_cipher_context_t *ctx,
const unsigned char *input, size_t ilen );
......@@ -110,7 +123,8 @@ int mbedtls_cipher_cmac_update( mbedtls_cipher_context_t *ctx,
* \param ctx The cipher context used for the CMAC operation.
* \param output The output buffer for the CMAC checksum result.
*
* \returns \c 0 on success, or #MBEDTLS_ERR_MD_BAD_INPUT_DATA
* \return \c 0 on success.
* \return #MBEDTLS_ERR_MD_BAD_INPUT_DATA
* if parameter verification fails.
*/
int mbedtls_cipher_cmac_finish( mbedtls_cipher_context_t *ctx,
......@@ -126,7 +140,8 @@ int mbedtls_cipher_cmac_finish( mbedtls_cipher_context_t *ctx,
*
* \param ctx The cipher context used for the CMAC operation.
*
* \returns \c 0 on success, or #MBEDTLS_ERR_MD_BAD_INPUT_DATA
* \return \c 0 on success.
* \return #MBEDTLS_ERR_MD_BAD_INPUT_DATA
* if parameter verification fails.
*/
int mbedtls_cipher_cmac_reset( mbedtls_cipher_context_t *ctx );
......@@ -149,7 +164,8 @@ int mbedtls_cipher_cmac_reset( mbedtls_cipher_context_t *ctx );
* \param ilen The length of the input data.
* \param output The buffer for the generic CMAC result.
*
* \returns \c 0 on success, or #MBEDTLS_ERR_MD_BAD_INPUT_DATA
* \return \c 0 on success.
* \return #MBEDTLS_ERR_MD_BAD_INPUT_DATA
* if parameter verification fails.
*/
int mbedtls_cipher_cmac( const mbedtls_cipher_info_t *cipher_info,
......@@ -180,23 +196,12 @@ int mbedtls_aes_cmac_prf_128( const unsigned char *key, size_t key_len,
unsigned char output[16] );
#endif /* MBEDTLS_AES_C */
#ifdef __cplusplus
}
#endif
#else /* !MBEDTLS_CMAC_ALT */
#include "cmac_alt.h"
#endif /* !MBEDTLS_CMAC_ALT */
#ifdef __cplusplus
extern "C" {
#endif
#if defined(MBEDTLS_SELF_TEST) && ( defined(MBEDTLS_AES_C) || defined(MBEDTLS_DES_C) )
/**
* \brief The CMAC checkup routine.
*
* \return \c 0 on success, or \c 1 on failure.
* \return \c 0 on success.
* \return \c 1 on failure.
*/
int mbedtls_cmac_self_test( int verbose );
#endif /* MBEDTLS_SELF_TEST && ( MBEDTLS_AES_C || MBEDTLS_DES_C ) */
......
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