1 /*- 2 * Copyright 2009 Colin Percival 3 * Copyright 2013 Alexander Peslyak 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 * 27 * This file was originally written by Colin Percival as part of the Tarsnap 28 * online backup system. 29 */ 30 #ifndef crypto_scrypt_H 31 #define crypto_scrypt_H 32 33 #include <limits.h> 34 #include <stddef.h> 35 #include <stdint.h> 36 37 #if SIZE_MAX > 0xffffffffULL 38 #define ARCH_BITS 64 39 #else 40 #define ARCH_BITS 32 41 #endif 42 43 #define crypto_pwhash_scryptsalsa208sha256_STRPREFIXBYTES 14 44 #define crypto_pwhash_scryptsalsa208sha256_STRSETTINGBYTES 57 45 #define crypto_pwhash_scryptsalsa208sha256_STRSALTBYTES 32 46 #define crypto_pwhash_scryptsalsa208sha256_STRSALTBYTES_ENCODED 43 47 #define crypto_pwhash_scryptsalsa208sha256_STRHASHBYTES 32 48 #define crypto_pwhash_scryptsalsa208sha256_STRHASHBYTES_ENCODED 43 49 50 #define BYTES2CHARS(bytes) ((((bytes) *8) + 5) / 6) 51 52 typedef struct { 53 void * base, *aligned; 54 size_t size; 55 } escrypt_region_t; 56 57 typedef union { 58 uint64_t d[8]; 59 uint32_t w[16]; 60 } escrypt_block_t; 61 62 typedef escrypt_region_t escrypt_local_t; 63 64 extern int escrypt_init_local(escrypt_local_t *__local); 65 66 extern int escrypt_free_local(escrypt_local_t *__local); 67 68 extern void *alloc_region(escrypt_region_t *region, size_t size); 69 extern int free_region(escrypt_region_t *region); 70 71 typedef int (*escrypt_kdf_t)(escrypt_local_t *__local, const uint8_t *__passwd, 72 size_t __passwdlen, const uint8_t *__salt, 73 size_t __saltlen, uint64_t __N, uint32_t __r, 74 uint32_t __p, uint8_t *__buf, size_t __buflen); 75 76 extern int escrypt_kdf_nosse(escrypt_local_t *__local, const uint8_t *__passwd, 77 size_t __passwdlen, const uint8_t *__salt, 78 size_t __saltlen, uint64_t __N, uint32_t __r, 79 uint32_t __p, uint8_t *__buf, size_t __buflen); 80 81 extern int escrypt_kdf_sse(escrypt_local_t *__local, const uint8_t *__passwd, 82 size_t __passwdlen, const uint8_t *__salt, 83 size_t __saltlen, uint64_t __N, uint32_t __r, 84 uint32_t __p, uint8_t *__buf, size_t __buflen); 85 86 extern uint8_t *escrypt_r(escrypt_local_t *__local, const uint8_t *__passwd, 87 size_t __passwdlen, const uint8_t *__setting, 88 uint8_t *__buf, size_t __buflen); 89 90 extern uint8_t *escrypt_gensalt_r(uint32_t __N_log2, uint32_t __r, uint32_t __p, 91 const uint8_t *__src, size_t __srclen, 92 uint8_t *__buf, size_t __buflen); 93 94 extern const uint8_t *escrypt_parse_setting(const uint8_t *setting, 95 uint32_t *N_log2_p, uint32_t *r_p, 96 uint32_t *p_p); 97 98 #endif /* !_CRYPTO_SCRYPT_H_ */ 99