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/*-
* Copyright 2009 Colin Percival
* Copyright 2013 Alexander Peslyak
* All rights reserved.
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 THE AUTHOR 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.
*
* This file was originally written by Colin Percival as part of the Tarsnap
* online backup system.
*/
#ifndef crypto_scrypt_H
#define crypto_scrypt_H
#include <limits.h>
#include <stddef.h>
#include <stdint.h>
#if SIZE_MAX > 0xffffffffULL
#define ARCH_BITS 64
#else
#define ARCH_BITS 32
#endif
#define crypto_pwhash_scryptsalsa208sha256_STRPREFIXBYTES 14
#define crypto_pwhash_scryptsalsa208sha256_STRSETTINGBYTES 57
#define crypto_pwhash_scryptsalsa208sha256_STRSALTBYTES 32
#define crypto_pwhash_scryptsalsa208sha256_STRSALTBYTES_ENCODED 43
#define crypto_pwhash_scryptsalsa208sha256_STRHASHBYTES 32
#define crypto_pwhash_scryptsalsa208sha256_STRHASHBYTES_ENCODED 43
#define BYTES2CHARS(bytes) ((((bytes) *8) + 5) / 6)
typedef struct {
void * base, *aligned;
size_t size;
} escrypt_region_t;
typedef union {
uint64_t d[8];
uint32_t w[16];
} escrypt_block_t;
typedef escrypt_region_t escrypt_local_t;
extern int escrypt_init_local(escrypt_local_t *__local);
extern int escrypt_free_local(escrypt_local_t *__local);
extern void *alloc_region(escrypt_region_t *region, size_t size);
extern int free_region(escrypt_region_t *region);
typedef int (*escrypt_kdf_t)(escrypt_local_t *__local, const uint8_t *__passwd,
size_t __passwdlen, const uint8_t *__salt,
size_t __saltlen, uint64_t __N, uint32_t __r,
uint32_t __p, uint8_t *__buf, size_t __buflen);
extern int escrypt_kdf_nosse(escrypt_local_t *__local, const uint8_t *__passwd,
size_t __passwdlen, const uint8_t *__salt,
size_t __saltlen, uint64_t __N, uint32_t __r,
uint32_t __p, uint8_t *__buf, size_t __buflen);
extern int escrypt_kdf_sse(escrypt_local_t *__local, const uint8_t *__passwd,
size_t __passwdlen, const uint8_t *__salt,
size_t __saltlen, uint64_t __N, uint32_t __r,
uint32_t __p, uint8_t *__buf, size_t __buflen);
extern uint8_t *escrypt_r(escrypt_local_t *__local, const uint8_t *__passwd,
size_t __passwdlen, const uint8_t *__setting,
uint8_t *__buf, size_t __buflen);
extern uint8_t *escrypt_gensalt_r(uint32_t __N_log2, uint32_t __r, uint32_t __p,
const uint8_t *__src, size_t __srclen,
uint8_t *__buf, size_t __buflen);
extern const uint8_t *escrypt_parse_setting(const uint8_t *setting,
uint32_t *N_log2_p, uint32_t *r_p,
uint32_t *p_p);
#endif /* !_CRYPTO_SCRYPT_H_ */
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