| 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_ */ |