diff options
Diffstat (limited to 'wsutil/aes.h')
| -rw-r--r-- | wsutil/aes.h | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/wsutil/aes.h b/wsutil/aes.h index e384667900..df319c69af 100644 --- a/wsutil/aes.h +++ b/wsutil/aes.h @@ -62,5 +62,46 @@ void rijndael_decrypt( const guchar *src, guchar *dst); +typedef struct s_aes_cmac_ctx { + rijndael_ctx aes; + guint key_len; + guint input_used; + guint8 state[RIJNDAEL_MAXKB]; + guint8 input[RIJNDAEL_MAXKB]; +} aes_cmac_ctx; + +/** + * Initialize AES-CMAC calculation with the provided key. + * @param [OUT] ctx Context to initialize + * @param [IN] key Key to used + * @param [IN] key_len Key length in bytes + */ +WS_DLL_PUBLIC +void aes_cmac_encrypt_starts( + aes_cmac_ctx *ctx, + const guint8 *key, + guint key_len); + +/** + * Add a new buffer for AES-CMAC calculation + * @param [IN] ctx Context (initialize with @ref AES_CMAC_encrypt_starts) + * @param [IN] input Buffer to add in AES-CMAC calculation + * @param [IN] length Length of input buffer (in bytes) + */ +WS_DLL_PUBLIC +void aes_cmac_encrypt_update( + aes_cmac_ctx *ctx, + const guint8 *input, + guint length); + +/** + * Ends AES-CMAC calculation + * @param [IN] ctx Context (initialize with @ref AES_CMAC_encrypt_starts) + * @param [OUT] output Buffer to store MAC (must be at least key_len long) + */ +WS_DLL_PUBLIC +void aes_cmac_encrypt_finish( + aes_cmac_ctx *ctx, + guint8 *output); #endif |