hmac_md5.c File Reference

MD5 HMAC not dependent on OpenSSL. More...

#include <freeradius-devel/util/atexit.h>
#include <freeradius-devel/util/md5.h>
#include <freeradius-devel/util/strerror.h>

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Functions
int	fr_hmac_md5 (uint8_t digest[MD5_DIGEST_LENGTH], uint8_t const *in, size_t inlen, uint8_t const *key, size_t key_len)
	Calculate HMAC using internal MD5 implementation.

Detailed Description

MD5 HMAC not dependent on OpenSSL.

Note

New code that needs fast or incremental HMACs should use the OpenSSL EVP_* HMAC interface instead, as that can take advantage of acceleration instructions provided by various CPUs (and provides an incremental hashing interface).

For the sake of illustration we provide the following sample code for the implementation of HMAC-MD5 as well as some corresponding test vectors (the code is based on MD5 code as described in [MD5]).

Copyright

2000,2006 The FreeRADIUS server project

Definition in file hmac_md5.c.

Function Documentation

fr_hmac_md5()

int fr_hmac_md5	(	uint8_t	digest[MD5_DIGEST_LENGTH],
		uint8_t const *	in,
		size_t	inlen,
		uint8_t const *	key,
		size_t	key_len
	)

Calculate HMAC using internal MD5 implementation.

Parameters

digest	Caller digest to be filled in.
in	Pointer to data stream.
inlen	length of data stream.
key	Pointer to authentication key.
key_len	Length of authentication key.

Returns

• 0 on success.
• -1 on error.

Definition at line 119 of file hmac_md5.c.

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