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crypto.h
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crypto.h
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/*
* Cryptographic headers
*
* Copyright (C) 2007-2008 Xavier Carcelle <[email protected]>
* Florian Fainelli <[email protected]>
* Nicolas Thill <[email protected]>
*
* The BSD License
* ===============
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name of OpenLink Software Inc. nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL OPENLINK OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*
* In addition, as a special exception, the copyright holders give
* permission to link the code of portions of this program with the
* OpenSSL library under certain conditions as described in each
* individual source file, and distribute linked combinations
* including the two.
* You must obey the GNU General Public License in all respects
* for all of the code used other than OpenSSL. If you modify
* file(s) with this exception, you may extend this exception to your
* version of the file(s), but you are not obligated to do so. If you
* do not wish to do so, delete this exception statement from your
* version. If you delete this exception statement from all source
* files in the program, then also delete it here.
*/
#ifndef __CRYPTO_H__
#define __CRYPTO_H__
#include <sys/types.h>
#define MAX_SECRET_SIZ 64
#define SALT_SIZ 8
extern u_int8_t dak_salt[SALT_SIZ];
extern u_int8_t nmk_salt[SALT_SIZ];
/**
* salted_secret
* @len: lenght of the salted secret
* @value: value of the salted secret
*/
struct salted_secret {
u_int8_t len;
u_int8_t value[72];
};
/**
* sha256_ctx
* @total: total of the sha256 context
* @state: state of the context
* @buffer: buffer to calculate stuff
*/
struct sha256_ctx {
u_int32_t total[2];
u_int32_t state[8];
u_int8_t buffer[MAX_SECRET_SIZ];
};
/**
* gen_passphrase - create a hash from a user input passphrase
* @password: user input password
* @key: resulting key
* @salt: salt type (NMK, DAK or NID)
* @return
* 0 on success, -1 on failure
*/
extern int gen_passphrase(const char *password, u_int8_t *key, const unsigned char *salt);
#endif /* __CRYPTO_H__ */