AES-GCM - AES Galois/Counter Mode APIs

Type definitions and APIs for AES-GCM (AES Galois/Counter Mode). More...

Functions
void	ocrypto_aes_gcm_encrypt (uint8_t *ct, uint8_t *tag, size_t tag_len, const uint8_t *pt, size_t pt_len, const uint8_t *key, size_t size, const uint8_t iv[12], const uint8_t *aa, size_t aa_len)
int	ocrypto_aes_gcm_decrypt (uint8_t *pt, const uint8_t *tag, size_t tag_len, const uint8_t *ct, size_t ct_len, const uint8_t *key, size_t size, const uint8_t iv[12], const uint8_t *aa, size_t aa_len)

Incremental AES-GCM encryption/decryption.
This group of functions can be used to incrementally compute the AES-GCM encryption/decryption for a given message.
void	ocrypto_aes_gcm_init (ocrypto_aes_gcm_ctx *ctx, const uint8_t *key, size_t size, const uint8_t iv[12])
void	ocrypto_aes_gcm_init_iv (ocrypto_aes_gcm_ctx *ctx, const uint8_t *iv, size_t iv_len)
void	ocrypto_aes_gcm_update_aad (ocrypto_aes_gcm_ctx *ctx, const uint8_t *aa, size_t aa_len)
void	ocrypto_aes_gcm_update_enc (ocrypto_aes_gcm_ctx *ctx, uint8_t *ct, const uint8_t *pt, size_t pt_len)
void	ocrypto_aes_gcm_update_dec (ocrypto_aes_gcm_ctx *ctx, uint8_t *pt, const uint8_t *ct, size_t ct_len)
void	ocrypto_aes_gcm_final_enc (ocrypto_aes_gcm_ctx *ctx, uint8_t *tag, size_t tag_len)
int	ocrypto_aes_gcm_final_dec (ocrypto_aes_gcm_ctx *ctx, const uint8_t *tag, size_t tag_len)

Detailed Description

Type definitions and APIs for AES-GCM (AES Galois/Counter Mode).

AES-GCM (AES Galois/Counter Mode) is an AES mode which effectively turns the block cipher into a stream cipher. The AES block cipher primitive is used in CTR mode for encryption and decryption. In addition, 128-bit Galois Field multiplication is used for authentication.