sha1-tlsprf.c File Reference

TLS PRF (SHA1 + MD5). More...

#include "includes.h"
#include "common.h"
#include "sha1.h"
#include "md5.h"
#include "crypto.h"

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Functions
int	tls_prf (const u8 *secret, size_t secret_len, const char *label, const u8 *seed, size_t seed_len, u8 *out, size_t outlen)
	Pseudo-Random Function for TLS (TLS-PRF, RFC 2246).

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Detailed Description

TLS PRF (SHA1 + MD5).

Copyright

Copyright (c) 2003-2005, Jouni Malinen <j@w1.fi>

This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License version 2 as published by the Free Software Foundation.

Alternatively, this software may be distributed under the terms of BSD license.

See README and COPYING for more details.

Definition in file sha1-tlsprf.c.

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Function Documentation

int tls_prf	(	const u8 *	secret,
		size_t	secret_len,
		const char *	label,
		const u8 *	seed,
		size_t	seed_len,
		u8 *	out,
		size_t	outlen
	)

Pseudo-Random Function for TLS (TLS-PRF, RFC 2246).

Parameters:

	secret	Key for PRF
	secret_len	Length of the key in bytes
	label	A unique label for each purpose of the PRF
	seed	Seed value to bind into the key
	seed_len	Length of the seed
	out	Buffer for the generated pseudo-random key
	outlen	Number of bytes of key to generate

Returns:

0 on success, -1 on failure.

This function is used to derive new, cryptographically separate keys from a given key in TLS. This PRF is defined in RFC 2246, Chapter 5.

Definition at line 39 of file sha1-tlsprf.c.

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