HMAC-SHA512

HMAC algorithm based on SHA512. More...

Files
file	ocrypto_hmac_sha512.h
	HMAC algorithm based on SHA512.

Macros
#define	ocrypto_hmac_sha512_BYTES   (64)

Functions
void	ocrypto_hmac_sha512 (uint8_t r[(64)], const uint8_t *key, size_t key_len, const uint8_t *in, size_t in_len)
void	ocrypto_hmac_sha512_aad (uint8_t r[(64)], const uint8_t *key, size_t key_len, const uint8_t *in, size_t in_len, const uint8_t *aad, size_t aad_len)

Incremental HMAC-SHA512 generator
This group of functions can be used to incrementally compute the HMAC-SHA512 authenticator for a given message.
void	ocrypto_hmac_sha512_init (ocrypto_hmac_sha512_ctx *ctx, const uint8_t *key, size_t key_len)
void	ocrypto_hmac_sha512_update (ocrypto_hmac_sha512_ctx *ctx, const uint8_t *in, size_t in_len)
void	ocrypto_hmac_sha512_final (ocrypto_hmac_sha512_ctx *ctx, uint8_t r[(64)])

Detailed Description

HMAC algorithm based on SHA512.

HMAC-SHA512 is an algorithm for message authentication using the cryptographic hash function SHA512 and a reusable secret key. Users in possession of the key can verify the integrity and authenticity of the message.

See also

RFC - HMAC: Keyed-Hashing for Message Authentication