/*
* Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017,
* 2018, 2019
* Jonathan Schleifer <js@heap.zone>
*
* All rights reserved.
*
* This file is part of ObjFW. It may be distributed under the terms of the
* Q Public License 1.0, which can be found in the file LICENSE.QPL included in
* the packaging of this file.
*
* Alternatively, it may be distributed under the terms of the GNU General
* Public License, either version 2 or 3, which can be found in the file
* LICENSE.GPLv2 or LICENSE.GPLv3 respectively included in the packaging of this
* file.
*/
#ifndef __STDC_LIMIT_MACROS
# define __STDC_LIMIT_MACROS
#endif
#ifndef __STDC_CONSTANT_MACROS
# define __STDC_CONSTANT_MACROS
#endif
#import "macros.h"
OF_ASSUME_NONNULL_BEGIN
/*! @file */
@class OFHMAC;
#ifdef __cplusplus
extern "C" {
#endif
/*!
* @brief Derive a key from a password and a salt.
*
* @note This will call @ref OFHMAC::reset on the @ref OFHMAC first, making it
* possible to reuse the @ref OFHMAC, but also meaning all previous
* results from the @ref OFHMAC get invalidated if they have not been
* copied.
*
* @param HMAC The HMAC to use to derive a key
* @param iterations The number of iterations to perform
* @param salt The salt to derive a key with
* @param saltLength The length of the salt
* @param password The password to derive a key from
* @param passwordLength The length of the password
* @param key The buffer to write the key to
* @param keyLength The desired length for the derived key (key needs to have
* enough storage)
*/
extern void of_pbkdf2(OFHMAC *HMAC, size_t iterations,
const unsigned char *salt, size_t saltLength,
const char *password, size_t passwordLength,
unsigned char *key, size_t keyLength);
#ifdef __cplusplus
}
#endif
OF_ASSUME_NONNULL_END