diff options
Diffstat (limited to 'include/aes.h')
-rw-r--r-- | include/aes.h | 60 |
1 files changed, 50 insertions, 10 deletions
diff --git a/include/aes.h b/include/aes.h index ea06308279..6315c02aa9 100644 --- a/include/aes.h +++ b/include/aes.h @@ -8,6 +8,13 @@ #ifndef _AES_REF_H_ #define _AES_REF_H_ +#ifdef USE_HOSTCC +/* Define compat stuff for use in fw_* tools. */ +typedef unsigned char u8; +typedef unsigned int u32; +#define debug(...) do {} while (0) +#endif + /* * AES encryption library, with small code size, supporting only 128-bit AES * @@ -25,30 +32,63 @@ enum { }; /** + * aes_expand_key() - Expand the AES key + * * Expand a key into a key schedule, which is then used for the other * operations. * - * \param key Key, of length AES_KEY_LENGTH bytes - * \param expkey Buffer to place expanded key, AES_EXPAND_KEY_LENGTH + * @key Key, of length AES_KEY_LENGTH bytes + * @expkey Buffer to place expanded key, AES_EXPAND_KEY_LENGTH */ void aes_expand_key(u8 *key, u8 *expkey); /** - * Encrypt a single block of data + * aes_encrypt() - Encrypt single block of data with AES 128 * - * in Input data - * expkey Expanded key to use for encryption (from aes_expand_key()) - * out Output data + * @in Input data + * @expkey Expanded key to use for encryption (from aes_expand_key()) + * @out Output data */ void aes_encrypt(u8 *in, u8 *expkey, u8 *out); /** - * Decrypt a single block of data + * aes_decrypt() - Decrypt single block of data with AES 128 * - * in Input data - * expkey Expanded key to use for decryption (from aes_expand_key()) - * out Output data + * @in Input data + * @expkey Expanded key to use for decryption (from aes_expand_key()) + * @out Output data */ void aes_decrypt(u8 *in, u8 *expkey, u8 *out); +/** + * Apply chain data to the destination using EOR + * + * Each array is of length AES_KEY_LENGTH. + * + * @cbc_chain_data Chain data + * @src Source data + * @dst Destination data, which is modified here + */ +void aes_apply_cbc_chain_data(u8 *cbc_chain_data, u8 *src, u8 *dst); + +/** + * aes_cbc_encrypt_blocks() - Encrypt multiple blocks of data with AES CBC. + * + * @key_exp Expanded key to use + * @src Source data to encrypt + * @dst Destination buffer + * @num_aes_blocks Number of AES blocks to encrypt + */ +void aes_cbc_encrypt_blocks(u8 *key_exp, u8 *src, u8 *dst, u32 num_aes_blocks); + +/** + * Decrypt multiple blocks of data with AES CBC. + * + * @key_exp Expanded key to use + * @src Source data to decrypt + * @dst Destination buffer + * @num_aes_blocks Number of AES blocks to decrypt + */ +void aes_cbc_decrypt_blocks(u8 *key_exp, u8 *src, u8 *dst, u32 num_aes_blocks); + #endif /* _AES_REF_H_ */ |