HMAC-SHA1

HMAC algorithm based on SHA1. More...

Files
file	ocrypto_hmac_sha1.h
	HMAC algorithm based on SHA1.

Macros
#define	ocrypto_hmac_sha1_BYTES   (20)

Functions
void	ocrypto_hmac_sha1 (uint8_t r[(20)], const uint8_t *key, size_t key_len, const uint8_t *in, size_t in_len)
void	ocrypto_hmac_sha1_aad (uint8_t r[(20)], 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-SHA1 generator
This group of functions can be used to incrementally compute the HMAC-SHA1 authenticator for a given message.
void	ocrypto_hmac_sha1_init (ocrypto_hmac_sha1_ctx *ctx, const uint8_t *key, size_t key_len)
void	ocrypto_hmac_sha1_update (ocrypto_hmac_sha1_ctx *ctx, const uint8_t *in, size_t in_len)
void	ocrypto_hmac_sha1_final (ocrypto_hmac_sha1_ctx *ctx, uint8_t r[(20)])

Detailed Description

HMAC algorithm based on SHA1.

HMAC-SHA1 is an algorithm for message authentication using the cryptographic hash function SHA1 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