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_ */ 47
