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1 | /*- |
2 | * Copyright 2009 Colin Percival | |
3 | * All rights reserved. | |
4 | * | |
5 | * Redistribution and use in source and binary forms, with or without | |
6 | * modification, are permitted provided that the following conditions | |
7 | * are met: | |
8 | * 1. Redistributions of source code must retain the above copyright | |
9 | * notice, this list of conditions and the following disclaimer. | |
10 | * 2. Redistributions in binary form must reproduce the above copyright | |
11 | * notice, this list of conditions and the following disclaimer in the | |
12 | * documentation and/or other materials provided with the distribution. | |
13 | * | |
14 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND | |
15 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
16 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
17 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE | |
18 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
19 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
20 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
21 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
22 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
23 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
24 | * SUCH DAMAGE. | |
25 | * | |
26 | * This file was originally written by Colin Percival as part of the Tarsnap | |
27 | * online backup system. | |
28 | */ | |
29 | #ifndef _CRYPTO_SCRYPT_H_ | |
30 | #define _CRYPTO_SCRYPT_H_ | |
31 | ||
32 | #include <stdint.h> | |
33 | #include <unistd.h> | |
34 | ||
35 | /** | |
36 | * crypto_scrypt(passwd, passwdlen, salt, saltlen, N, r, p, buf, buflen): | |
37 | * Compute scrypt(passwd[0 .. passwdlen - 1], salt[0 .. saltlen - 1], N, r, | |
38 | * p, buflen) and write the result into buf. The parameters r, p, and buflen | |
39 | * must satisfy r * p < 2^30 and buflen <= (2^32 - 1) * 32. The parameter N | |
40 | * must be a power of 2 greater than 1. | |
41 | * | |
42 | * Return 0 on success; or -1 on error. | |
43 | */ | |
44 | int crypto_scrypt(const uint8_t *, size_t, const uint8_t *, size_t, uint64_t, | |
45 | uint32_t, uint32_t, uint8_t *, size_t); | |
46 | ||
47 | #endif /* !_CRYPTO_SCRYPT_H_ */ |