mirror of
https://github.com/JayDDee/cpuminer-opt.git
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138 lines
4.3 KiB
C
138 lines
4.3 KiB
C
/*-
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* Copyright 2009 Colin Percival
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* Copyright 2013-2018 Alexander Peslyak
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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 _YESPOWER_H_
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#define _YESPOWER_H_
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#include <stdint.h>
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#include <stdlib.h> /* for size_t */
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* Internal type used by the memory allocator. Please do not use it directly.
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* Use yespower_local_t instead.
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*/
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typedef struct {
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void *base, *aligned;
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size_t base_size, aligned_size;
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} yespower_region_t;
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/**
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* Type for thread-local (RAM) data structure.
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*/
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typedef yespower_region_t yespower_local_t;
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/*
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* Type for yespower algorithm version numbers.
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*/
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typedef enum { YESPOWER_0_5 = 5, YESPOWER_1_0 = 10 } yespower_version_t;
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/**
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* yespower parameters combined into one struct.
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*/
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typedef struct {
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yespower_version_t version;
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uint32_t N, r;
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const uint8_t *pers;
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size_t perslen;
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} yespower_params_t;
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/**
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* A 256-bit yespower hash.
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*/
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typedef struct {
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unsigned char uc[32];
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} yespower_binary_t __attribute__ ((aligned (64)));
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/**
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* yespower_init_local(local):
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* Initialize the thread-local (RAM) data structure. Actual memory allocation
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* is currently fully postponed until a call to yespower().
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*
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* Return 0 on success; or -1 on error.
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*
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* MT-safe as long as local is local to the thread.
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*/
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extern int yespower_init_local(yespower_local_t *local);
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/**
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* yespower_free_local(local):
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* Free memory that may have been allocated for an initialized thread-local
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* (RAM) data structure.
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*
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* Return 0 on success; or -1 on error.
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*
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* MT-safe as long as local is local to the thread.
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*/
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extern int yespower_free_local(yespower_local_t *local);
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/**
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* yespower(local, src, srclen, params, dst):
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* Compute yespower(src[0 .. srclen - 1], N, r), to be checked for "< target".
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* local is the thread-local data structure, allowing to preserve and reuse a
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* memory allocation across calls, thereby reducing processing overhead.
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*
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* Return 0 on success; or -1 on error.
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*
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* local must be initialized with yespower_init_local().
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*
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* MT-safe as long as local and dst are local to the thread.
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*/
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extern int yespower(yespower_local_t *local,
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const uint8_t *src, size_t srclen,
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const yespower_params_t *params, yespower_binary_t *dst);
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extern int yespower_b2b(yespower_local_t *local,
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const uint8_t *src, size_t srclen,
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const yespower_params_t *params, yespower_binary_t *dst);
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/**
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* yespower_tls(src, srclen, params, dst):
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* Compute yespower(src[0 .. srclen - 1], N, r), to be checked for "< target".
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* The memory allocation is maintained internally using thread-local storage.
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*
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* Return 0 on success; or -1 on error.
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*
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* MT-safe as long as dst is local to the thread.
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*/
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extern int yespower_tls(const uint8_t *src, size_t srclen,
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const yespower_params_t *params, yespower_binary_t *dst);
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extern int yespower_b2b_tls(const uint8_t *src, size_t srclen,
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const yespower_params_t *params, yespower_binary_t *dst);
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#ifdef __cplusplus
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}
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#endif
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#endif /* !_YESPOWER_H_ */
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