2 * Copyright 2009 Colin Percival
3 * Copyright 2013 Alexander Peslyak
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
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.
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
27 * This file was originally written by Colin Percival as part of the Tarsnap
28 * online backup system.
30 #ifndef crypto_scrypt_H
31 #define crypto_scrypt_H
35 #define crypto_pwhash_scryptsalsa208sha256_STRPREFIXBYTES 14
36 #define crypto_pwhash_scryptsalsa208sha256_STRSETTINGBYTES 57
37 #define crypto_pwhash_scryptsalsa208sha256_STRSALTBYTES 32
38 #define crypto_pwhash_scryptsalsa208sha256_STRSALTBYTES_ENCODED 43
39 #define crypto_pwhash_scryptsalsa208sha256_STRHASHBYTES 32
40 #define crypto_pwhash_scryptsalsa208sha256_STRHASHBYTES_ENCODED 43
42 #define BYTES2CHARS(bytes) ((((bytes) * 8) + 5) / 6)
45 void * base, * aligned;
49 typedef escrypt_region_t escrypt_local_t;
51 extern int escrypt_init_local(escrypt_local_t * __local);
53 extern int escrypt_free_local(escrypt_local_t * __local);
55 extern void *alloc_region(escrypt_region_t * region, size_t size);
56 extern int free_region(escrypt_region_t * region);
58 typedef int (*escrypt_kdf_t)(escrypt_local_t * __local,
59 const uint8_t * __passwd, size_t __passwdlen,
60 const uint8_t * __salt, size_t __saltlen,
61 uint64_t __N, uint32_t __r, uint32_t __p,
62 uint8_t * __buf, size_t __buflen);
64 extern int escrypt_kdf_nosse(escrypt_local_t * __local,
65 const uint8_t * __passwd, size_t __passwdlen,
66 const uint8_t * __salt, size_t __saltlen,
67 uint64_t __N, uint32_t __r, uint32_t __p,
68 uint8_t * __buf, size_t __buflen);
70 extern int escrypt_kdf_sse(escrypt_local_t * __local,
71 const uint8_t * __passwd, size_t __passwdlen,
72 const uint8_t * __salt, size_t __saltlen,
73 uint64_t __N, uint32_t __r, uint32_t __p,
74 uint8_t * __buf, size_t __buflen);
76 extern uint8_t * escrypt_r(escrypt_local_t * __local,
77 const uint8_t * __passwd, size_t __passwdlen,
78 const uint8_t * __setting,
79 uint8_t * __buf, size_t __buflen);
81 extern uint8_t * escrypt_gensalt_r(
82 uint32_t __N_log2, uint32_t __r, uint32_t __p,
83 const uint8_t * __src, size_t __srclen,
84 uint8_t * __buf, size_t __buflen);
86 #endif /* !_CRYPTO_SCRYPT_H_ */