/*
* Copyright (c) 2008-2024 Jonathan Schleifer <js@nil.im>
*
* All rights reserved.
*
* This program is free software: you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License version 3.0 only,
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
* version 3.0 for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* version 3.0 along with this program. If not, see
* <https://www.gnu.org/licenses/>.
*/
#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;
/**
* @brief The parameters for @ref OFScrypt.
*/
typedef struct {
/** @brief The block size to use. */
size_t blockSize;
/** @brief The CPU/memory cost factor to use. */
size_t costFactor;
/** @brief The parallelization to use. */
size_t parallelization;
/** @brief The salt to derive a key with. */
const unsigned char *salt;
/** @brief The length of the salt. */
size_t saltLength;
/** @brief The password to derive a key from. */
const char *password;
/** @brief The length of the password. */
size_t passwordLength;
/** @brief The buffer to write the key to. */
unsigned char *key;
/**
* @brief The desired length for the derived key.
*
* @ref key needs to have enough storage.
*/
size_t keyLength;
/** @brief Whether data may be stored in swappable memory. */
bool allowsSwappableMemory;
} OFScryptParameters;
#ifdef __cplusplus
extern "C" {
#endif
/* No OF_VISIBILITY_HIDDEN so tests can call it. */
extern void _OFSalsa20_8Core(uint32_t buffer[_Nonnull 16]);
extern void _OFScryptBlockMix(uint32_t *output, const uint32_t *input,
size_t blockSize);
extern void _OFScryptROMix(uint32_t *buffer, size_t blockSize,
size_t costFactor, uint32_t *tmp);
/**
* @brief Derives a key from a password and a salt using scrypt.
*
* @param parameters The parameters to use
*/
extern void OFScrypt(OFScryptParameters parameters);
#ifdef __cplusplus
}
#endif
OF_ASSUME_NONNULL_END