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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 |
| 34 /** |
| 35 * crypto_scrypt(passwd, passwdlen, salt, saltlen, N, r, p, buf, buflen): |
| 36 * Compute scrypt(passwd[0 .. passwdlen - 1], salt[0 .. saltlen - 1], N, r, |
| 37 * p, buflen) and write the result into buf. The parameters r, p, and buflen |
| 38 * must satisfy r * p < 2^30 and buflen <= (2^32 - 1) * 32. The parameter N |
| 39 * must be a power of 2 greater than 1. |
| 40 * |
| 41 * Return 0 on success; or -1 on error. |
| 42 */ |
| 43 int crypto_scrypt(const uint8_t *, size_t, const uint8_t *, size_t, uint64_t, |
| 44 uint32_t, uint32_t, uint8_t *, size_t); |
| 45 |
| 46 #endif /* !_CRYPTO_SCRYPT_H_ */ |
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