HMAC SHA1 Message Authentication

Data Structures
struct	pj_hmac_sha1_context

Functions
void	pj_hmac_sha1 (const pj_uint8_t *input, unsigned input_len, const pj_uint8_t *key, unsigned key_len, pj_uint8_t digest[20])
void	pj_hmac_sha1_init (pj_hmac_sha1_context *hctx, const pj_uint8_t *key, unsigned key_len)
void	pj_hmac_sha1_update (pj_hmac_sha1_context *hctx, const pj_uint8_t *input, unsigned input_len)
void	pj_hmac_sha1_final (pj_hmac_sha1_context *hctx, pj_uint8_t digest[20])

Detailed Description

This module contains the implementation of HMAC: Keyed-Hashing for Message Authentication, as described in RFC 2104.

Function Documentation

pj_hmac_sha1()

void pj_hmac_sha1	(	const pj_uint8_t *	input,
		unsigned	input_len,
		const pj_uint8_t *	key,
		unsigned	key_len,
		pj_uint8_t	digest[20]
	)

Calculate HMAC-SHA1 digest for the specified input and key with this single function call.

Parameters

input	Pointer to the input stream.
input_len	Length of input stream in bytes.
key	Pointer to the authentication key.
key_len	Length of the authentication key.
digest	Buffer to be filled with HMAC SHA1 digest.

pj_hmac_sha1_final()

void pj_hmac_sha1_final	(	pj_hmac_sha1_context *	hctx,
		pj_uint8_t	digest[20]
	)

Finish the message and return the digest.

Parameters

hctx	HMAC-SHA1 context.
digest	Buffer to be filled with HMAC SHA1 digest.

References PJ_END_DECL.

pj_hmac_sha1_init()

void pj_hmac_sha1_init	(	pj_hmac_sha1_context *	hctx,
		const pj_uint8_t *	key,
		unsigned	key_len
	)

Initiate HMAC-SHA1 context for incremental hashing.

Parameters

hctx	HMAC-SHA1 context.
key	Pointer to the authentication key.
key_len	Length of the authentication key.

pj_hmac_sha1_update()

void pj_hmac_sha1_update	(	pj_hmac_sha1_context *	hctx,
		const pj_uint8_t *	input,
		unsigned	input_len
	)

Append string to the message.

Parameters

hctx	HMAC-SHA1 context.
input	Pointer to the input stream.
input_len	Length of input stream in bytes.