diff options
Diffstat (limited to 'board/cr50/dcrypto/dcrypto.h')
| -rw-r--r-- | board/cr50/dcrypto/dcrypto.h | 27 |
1 files changed, 20 insertions, 7 deletions
diff --git a/board/cr50/dcrypto/dcrypto.h b/board/cr50/dcrypto/dcrypto.h index bbb8e0b2ef..bd87c1efe9 100644 --- a/board/cr50/dcrypto/dcrypto.h +++ b/board/cr50/dcrypto/dcrypto.h @@ -610,18 +610,31 @@ static inline const struct sha512_digest *HMAC_SHA512_final( */ #define AES256_BLOCK_CIPHER_KEY_SIZE 32 -int DCRYPTO_aes_init(const uint8_t *key, size_t key_len, const uint8_t *iv, - enum cipher_mode c_mode, enum encrypt_mode e_mode); -int DCRYPTO_aes_block(const uint8_t *in, uint8_t *out); +/** + * Initialize AES hardware into specified mode + * + * @param key AES key + * @param key_len key length in bits 128/192/256 + * @param iv initialization vector for CTR/CBC mode + * @param c_mode cipher mode ECB/CTR/CBC + * @param e_mode encryption mode (encrypt/decrypt) + * @return DCRYPTO_OK if successful + */ +enum dcrypto_result DCRYPTO_aes_init(const uint8_t *key, size_t key_len, + const uint8_t *iv, enum cipher_mode c_mode, + enum encrypt_mode e_mode); -void DCRYPTO_aes_write_iv(const uint8_t *iv); -void DCRYPTO_aes_read_iv(uint8_t *iv); +enum dcrypto_result DCRYPTO_aes_block(const uint8_t *in, uint8_t *out); /* AES-CTR-128/192/256 * NIST Special Publication 800-38A */ -int DCRYPTO_aes_ctr(uint8_t *out, const uint8_t *key, uint32_t key_bits, - const uint8_t *iv, const uint8_t *in, size_t in_len); +enum dcrypto_result DCRYPTO_aes_ctr(uint8_t *out, const uint8_t *key, + uint32_t key_bits, const uint8_t *iv, + const uint8_t *in, size_t in_len); + +void DCRYPTO_aes_write_iv(const uint8_t *iv); +void DCRYPTO_aes_read_iv(uint8_t *iv); /* AES-GCM-128/192/256 * NIST Special Publication 800-38D, IV is provided externally |