HMAC MD5 Message Authentication

Data Structures
struct	pj_hmac_md5_context

Functions
void	pj_hmac_md5 (const pj_uint8_t *input, unsigned input_len, const pj_uint8_t *key, unsigned key_len, pj_uint8_t digest[16])
void	pj_hmac_md5_init (pj_hmac_md5_context *hctx, const pj_uint8_t *key, unsigned key_len)
void	pj_hmac_md5_update (pj_hmac_md5_context *hctx, const pj_uint8_t *input, unsigned input_len)
void	pj_hmac_md5_final (pj_hmac_md5_context *hctx, pj_uint8_t digest[16])

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Detailed Description

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

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Function Documentation

void pj_hmac_md5	(	const pj_uint8_t *	input,
		unsigned	input_len,
		const pj_uint8_t *	key,
		unsigned	key_len,
		pj_uint8_t	digest[16]
	)

Calculate HMAC MD5 digest for the specified input and key.

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 MD5 digest.

void pj_hmac_md5_final	(	pj_hmac_md5_context *	hctx,
		pj_uint8_t	digest[16]
	)

Finish the message and return the digest.

Parameters:

hctx	HMAC-MD5 context.
digest	Buffer to be filled with HMAC MD5 digest.

void pj_hmac_md5_init	(	pj_hmac_md5_context *	hctx,
		const pj_uint8_t *	key,
		unsigned	key_len
	)

Initiate HMAC-MD5 context for incremental hashing.

Parameters:

hctx	HMAC-MD5 context.
key	Pointer to the authentication key.
key_len	Length of the authentication key.

void pj_hmac_md5_update	(	pj_hmac_md5_context *	hctx,
		const pj_uint8_t *	input,
		unsigned	input_len
	)

Append string to the message.

Parameters:

hctx	HMAC-MD5 context.
input	Pointer to the input stream.
input_len	Length of input stream in bytes.