From a0fd51ae85798711088f38a6417a018741b4c245 Mon Sep 17 00:00:00 2001 From: kokke Date: Sat, 8 Jul 2017 03:45:30 +0200 Subject: Update README.md --- README.md | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/README.md b/README.md index 179ee15..add3d34 100644 --- a/README.md +++ b/README.md @@ -2,6 +2,8 @@ This is a small and portable implementation of the AES ECB and CBC encryption algorithms written in C. +You can override the default 128bit key with a 192 or 256bit by defining the symbols AES192 or AES256 in `aes.h`. + The API is very simple and looks like this (I am using C99 ``-style annotated types): ```C @@ -10,7 +12,7 @@ void AES_ECB_decrypt(uint8_t* input, const uint8_t* key, uint8_t* output); void AES_CBC_encrypt_buffer(uint8_t* output, uint8_t* input, uint32_t length, const uint8_t* key, const uint8_t* iv); void AES_CBC_decrypt_buffer(uint8_t* output, uint8_t* input, uint32_t length, const uint8_t* key, const uint8_t* iv); ``` -You can choose to use the standard 128b key or 192/256b by defining the symbols AES192 or AES256 in `aes.h` - AES128 is defined by default. + You can choose to use one or both of the modes-of-operation, by defining the symbols CBC and ECB. See the header file for clarification. -- cgit v1.2.3