Commit bb1e5bb9 authored by kokke's avatar kokke
Browse files

Included test of CBC mode

parent df4f0726
#include <stdio.h> #include <stdio.h>
#include <string.h> #include <string.h>
#include <stdint.h> #include <stdint.h>
// Enable both ECB and CBC mode. Note this can be done before including aes.h or at compile-time.
// E.g. with GCC by using the -D flag: gcc -c aes.c -DCBC=0 -DECB=1
#define CBC 1
#define ECB 1
#include "aes.h" #include "aes.h"
static void phex(uint8_t* str); static void phex(uint8_t* str);
static void test_ECB(void); static void test_encrypt_ecb(void);
static void test_decrypt(void); static void test_decrypt_ecb(void);
static void test_encrypt_ecb_verbose(void);
static void test_encrypt_cbc(void);
static void test_decrypt_cbc(void);
int main(void) int main(void)
{ {
test_ECB(); test_encrypt_cbc();
test_decrypt(); test_decrypt_cbc();
test_decrypt_ecb();
test_encrypt_ecb();
test_encrypt_ecb_verbose();
return 0; return 0;
} }
/* Helpers */
static void test_ECB(void) // prints string as hex
static void phex(uint8_t* str)
{
unsigned char i;
for(i = 0; i < 16; ++i)
printf("%.2x", str[i]);
printf("\n");
}
static void test_encrypt_ecb_verbose(void)
{ {
// Example of more verbose verification
uint8_t i, buf[64], buf2[64]; uint8_t i, buf[64], buf2[64];
// 128bit key // 128bit key
...@@ -34,6 +58,7 @@ static void test_ECB(void) ...@@ -34,6 +58,7 @@ static void test_ECB(void)
memset(buf2, 0, 64); memset(buf2, 0, 64);
// print text to encrypt, key and IV // print text to encrypt, key and IV
printf("ECB encrypt verbose:\n\n");
printf("plain text:\n"); printf("plain text:\n");
for(i = (uint8_t) 0; i < (uint8_t) 4; ++i) for(i = (uint8_t) 0; i < (uint8_t) 4; ++i)
{ {
...@@ -55,17 +80,91 @@ static void test_ECB(void) ...@@ -55,17 +80,91 @@ static void test_ECB(void)
printf("\n"); printf("\n");
} }
// prints string as hex
static void phex(uint8_t* str) static void test_encrypt_ecb(void)
{ {
unsigned char i; uint8_t key[] = {0x2b, 0x7e, 0x15, 0x16, 0x28, 0xae, 0xd2, 0xa6, 0xab, 0xf7, 0x15, 0x88, 0x09, 0xcf, 0x4f, 0x3c};
for(i = 0; i < 16; ++i) uint8_t in[] = {0x6b, 0xc1, 0xbe, 0xe2, 0x2e, 0x40, 0x9f, 0x96, 0xe9, 0x3d, 0x7e, 0x11, 0x73, 0x93, 0x17, 0x2a};
printf("%.2x", str[i]); uint8_t out[] = {0x3a, 0xd7, 0x7b, 0xb4, 0x0d, 0x7a, 0x36, 0x60, 0xa8, 0x9e, 0xca, 0xf3, 0x24, 0x66, 0xef, 0x97};
printf("\n"); uint8_t buffer[16];
AES128_ECB_encrypt(in, key, buffer);
printf("ECB decrypt: ");
if(0 == strncmp((char*) out, (char*) buffer, 16))
{
printf("SUCCESS!\n");
}
else
{
printf("FAILURE!\n");
}
} }
static void test_decrypt_cbc(void)
{
// Example "simulating" a smaller buffer...
uint8_t key[] = { 0x2b, 0x7e, 0x15, 0x16, 0x28, 0xae, 0xd2, 0xa6, 0xab, 0xf7, 0x15, 0x88, 0x09, 0xcf, 0x4f, 0x3c };
uint8_t iv[] = { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f };
uint8_t in[] = { 0x76, 0x49, 0xab, 0xac, 0x81, 0x19, 0xb2, 0x46, 0xce, 0xe9, 0x8e, 0x9b, 0x12, 0xe9, 0x19, 0x7d,
0x50, 0x86, 0xcb, 0x9b, 0x50, 0x72, 0x19, 0xee, 0x95, 0xdb, 0x11, 0x3a, 0x91, 0x76, 0x78, 0xb2,
0x73, 0xbe, 0xd6, 0xb8, 0xe3, 0xc1, 0x74, 0x3b, 0x71, 0x16, 0xe6, 0x9e, 0x22, 0x22, 0x95, 0x16,
0x3f, 0xf1, 0xca, 0xa1, 0x68, 0x1f, 0xac, 0x09, 0x12, 0x0e, 0xca, 0x30, 0x75, 0x86, 0xe1, 0xa7 };
uint8_t out[] = { 0x6b, 0xc1, 0xbe, 0xe2, 0x2e, 0x40, 0x9f, 0x96, 0xe9, 0x3d, 0x7e, 0x11, 0x73, 0x93, 0x17, 0x2a,
0xae, 0x2d, 0x8a, 0x57, 0x1e, 0x03, 0xac, 0x9c, 0x9e, 0xb7, 0x6f, 0xac, 0x45, 0xaf, 0x8e, 0x51,
0x30, 0xc8, 0x1c, 0x46, 0xa3, 0x5c, 0xe4, 0x11, 0xe5, 0xfb, 0xc1, 0x19, 0x1a, 0x0a, 0x52, 0xef,
0xf6, 0x9f, 0x24, 0x45, 0xdf, 0x4f, 0x9b, 0x17, 0xad, 0x2b, 0x41, 0x7b, 0xe6, 0x6c, 0x37, 0x10 };
uint8_t buffer[64];
AES128_CBC_decrypt_buffer(buffer+0, in+0, 16, key, iv);
AES128_CBC_decrypt_buffer(buffer+16, in+16, 16, key, 0);
AES128_CBC_decrypt_buffer(buffer+32, in+32, 16, key, 0);
AES128_CBC_decrypt_buffer(buffer+48, in+48, 16, key, 0);
printf("CBC decrypt: ");
if(0 == strncmp((char*) out, (char*) buffer, 64))
{
printf("SUCCESS!\n");
}
else
{
printf("FAILURE!\n");
}
}
static void test_decrypt(void) static void test_encrypt_cbc(void)
{
uint8_t key[] = { 0x2b, 0x7e, 0x15, 0x16, 0x28, 0xae, 0xd2, 0xa6, 0xab, 0xf7, 0x15, 0x88, 0x09, 0xcf, 0x4f, 0x3c };
uint8_t iv[] = { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f };
uint8_t in[] = { 0x6b, 0xc1, 0xbe, 0xe2, 0x2e, 0x40, 0x9f, 0x96, 0xe9, 0x3d, 0x7e, 0x11, 0x73, 0x93, 0x17, 0x2a,
0xae, 0x2d, 0x8a, 0x57, 0x1e, 0x03, 0xac, 0x9c, 0x9e, 0xb7, 0x6f, 0xac, 0x45, 0xaf, 0x8e, 0x51,
0x30, 0xc8, 0x1c, 0x46, 0xa3, 0x5c, 0xe4, 0x11, 0xe5, 0xfb, 0xc1, 0x19, 0x1a, 0x0a, 0x52, 0xef,
0xf6, 0x9f, 0x24, 0x45, 0xdf, 0x4f, 0x9b, 0x17, 0xad, 0x2b, 0x41, 0x7b, 0xe6, 0x6c, 0x37, 0x10 };
uint8_t out[] = { 0x76, 0x49, 0xab, 0xac, 0x81, 0x19, 0xb2, 0x46, 0xce, 0xe9, 0x8e, 0x9b, 0x12, 0xe9, 0x19, 0x7d,
0x50, 0x86, 0xcb, 0x9b, 0x50, 0x72, 0x19, 0xee, 0x95, 0xdb, 0x11, 0x3a, 0x91, 0x76, 0x78, 0xb2,
0x73, 0xbe, 0xd6, 0xb8, 0xe3, 0xc1, 0x74, 0x3b, 0x71, 0x16, 0xe6, 0x9e, 0x22, 0x22, 0x95, 0x16,
0x3f, 0xf1, 0xca, 0xa1, 0x68, 0x1f, 0xac, 0x09, 0x12, 0x0e, 0xca, 0x30, 0x75, 0x86, 0xe1, 0xa7 };
uint8_t buffer[64];
AES128_CBC_encrypt_buffer(buffer, in, 64, key, iv);
printf("CBC encrypt: ");
if(0 == strncmp((char*) out, (char*) buffer, 64))
{
printf("SUCCESS!\n");
}
else
{
printf("FAILURE!\n");
}
}
static void test_decrypt_ecb(void)
{ {
uint8_t key[] = {0x2b, 0x7e, 0x15, 0x16, 0x28, 0xae, 0xd2, 0xa6, 0xab, 0xf7, 0x15, 0x88, 0x09, 0xcf, 0x4f, 0x3c}; uint8_t key[] = {0x2b, 0x7e, 0x15, 0x16, 0x28, 0xae, 0xd2, 0xa6, 0xab, 0xf7, 0x15, 0x88, 0x09, 0xcf, 0x4f, 0x3c};
uint8_t in[] = {0x3a, 0xd7, 0x7b, 0xb4, 0x0d, 0x7a, 0x36, 0x60, 0xa8, 0x9e, 0xca, 0xf3, 0x24, 0x66, 0xef, 0x97}; uint8_t in[] = {0x3a, 0xd7, 0x7b, 0xb4, 0x0d, 0x7a, 0x36, 0x60, 0xa8, 0x9e, 0xca, 0xf3, 0x24, 0x66, 0xef, 0x97};
...@@ -74,7 +173,7 @@ static void test_decrypt(void) ...@@ -74,7 +173,7 @@ static void test_decrypt(void)
AES128_ECB_decrypt(in, key, buffer); AES128_ECB_decrypt(in, key, buffer);
printf("decrypt: "); printf("ECB decrypt: ");
if(0 == strncmp((char*) out, (char*) buffer, 16)) if(0 == strncmp((char*) out, (char*) buffer, 16))
{ {
...@@ -86,3 +185,4 @@ static void test_decrypt(void) ...@@ -86,3 +185,4 @@ static void test_decrypt(void)
} }
} }
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