Commit 29d9964f authored by kokke's avatar kokke
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Update README.md

parent 1b45fa87
### Tiny AES128 in C ### Tiny AES128 in C
This is a small portable implementation of AES128 in C. The module is self-hosting and intented to be portable. I've successfully tested on Intel 64bit, 32bit ARM Cortex-M3 and 8 bit Atmel Mega16. This is a small portable implementation of AES128 in C. This is the smallest implementation in C I've seen yet, but if you find something smaller (or have improvements for the code in this project) please contact me or fork the project.
AES128 ECB is symmetric, so you use the same function for encrypting and decrypting. The code is tested on Intel 64bit, 32bit ARM Cortex-M3 and 8 bit Atmel Mega16.
The module uses just a bit more than 200 bytes of RAM and 1K ROM when compiled for ARM. The module uses just a bit more than 200 bytes of RAM and 1K ROM when compiled for ARM.
YMMV depending on target platform and optimization skills of your compiler. YMMV depending on target platform and optimization skills of your compiler.
...@@ -31,5 +31,6 @@ Somehow, -O2 is a bit smaller than -Os with this compiler. I am using Mentor Gra ...@@ -31,5 +31,6 @@ Somehow, -O2 is a bit smaller than -Os with this compiler. I am using Mentor Gra
The implementation is verified against the data in: The implementation is verified against the data in:
[National Institute of Standards and Technology Special Publication 800-38A 2001 ED](http://csrc.nist.gov/publications/nistpubs/800-38a/sp800-38a.pdf) Appendix F: Example Vectors for Modes of Operation of the AES.
**[National Institute of Standards and Technology Special Publication 800-38A 2001 ED](http://csrc.nist.gov/publications/nistpubs/800-38a/sp800-38a.pdf) Appendix F: Example Vectors for Modes of Operation of the AES.** Note: AES128 ECB is symmetric, so you use the same function for encrypting and decrypting.
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