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52 lines
2.2 KiB
C
52 lines
2.2 KiB
C
/*-
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* Copyright 2009 Colin Percival
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* This file was originally written by Colin Percival as part of the Tarsnap
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* online backup system.
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*/
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#ifndef _CRYPTO_SCRYPT_H_
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#define _CRYPTO_SCRYPT_H_
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#include <stdint.h>
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#include <emmintrin.h>
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void smix(uint8_t *, size_t, uint64_t, void *, void *);
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void PBKDF2_SHA256(const uint8_t *, size_t, const uint8_t *, size_t,
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uint64_t, uint8_t *, size_t);
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/**
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* crypto_scrypt(passwd, passwdlen, salt, saltlen, N, r, p, buf, buflen):
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* Compute scrypt(passwd[0 .. passwdlen - 1], salt[0 .. saltlen - 1], N, r,
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* p, buflen) and write the result into buf. The parameters r, p, and buflen
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* must satisfy r * p < 2^30 and buflen <= (2^32 - 1) * 32. The parameter N
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* must be a power of 2 greater than 1.
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*
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* Return 0 on success; or -1 on error.
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*/
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int crypto_scrypt(const uint8_t *, size_t, const uint8_t *, size_t, uint64_t,
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uint32_t, uint32_t, uint8_t *, size_t);
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#endif /* !_CRYPTO_SCRYPT_H_ */
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