8a7d5338c2
Modified by Artforz, coblee, pooler, wtogami, Nikolay Belikov, Adrian Gallagher miner.cpp changes stripped during merge to Dogecoin
137 lines
4.4 KiB
C++
137 lines
4.4 KiB
C++
/*
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* Copyright 2009 Colin Percival, 2011 ArtForz, 2012-2013 pooler
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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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#include "crypto/scrypt.h"
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#include <stdlib.h>
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#include <stdint.h>
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#include <string.h>
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#include <openssl/sha.h>
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#include <emmintrin.h>
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static inline void xor_salsa8_sse2(__m128i B[4], const __m128i Bx[4])
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{
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__m128i X0, X1, X2, X3;
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__m128i T;
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int i;
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X0 = B[0] = _mm_xor_si128(B[0], Bx[0]);
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X1 = B[1] = _mm_xor_si128(B[1], Bx[1]);
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X2 = B[2] = _mm_xor_si128(B[2], Bx[2]);
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X3 = B[3] = _mm_xor_si128(B[3], Bx[3]);
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for (i = 0; i < 8; i += 2) {
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/* Operate on "columns". */
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T = _mm_add_epi32(X0, X3);
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X1 = _mm_xor_si128(X1, _mm_slli_epi32(T, 7));
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X1 = _mm_xor_si128(X1, _mm_srli_epi32(T, 25));
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T = _mm_add_epi32(X1, X0);
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X2 = _mm_xor_si128(X2, _mm_slli_epi32(T, 9));
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X2 = _mm_xor_si128(X2, _mm_srli_epi32(T, 23));
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T = _mm_add_epi32(X2, X1);
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X3 = _mm_xor_si128(X3, _mm_slli_epi32(T, 13));
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X3 = _mm_xor_si128(X3, _mm_srli_epi32(T, 19));
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T = _mm_add_epi32(X3, X2);
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X0 = _mm_xor_si128(X0, _mm_slli_epi32(T, 18));
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X0 = _mm_xor_si128(X0, _mm_srli_epi32(T, 14));
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/* Rearrange data. */
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X1 = _mm_shuffle_epi32(X1, 0x93);
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X2 = _mm_shuffle_epi32(X2, 0x4E);
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X3 = _mm_shuffle_epi32(X3, 0x39);
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/* Operate on "rows". */
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T = _mm_add_epi32(X0, X1);
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X3 = _mm_xor_si128(X3, _mm_slli_epi32(T, 7));
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X3 = _mm_xor_si128(X3, _mm_srli_epi32(T, 25));
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T = _mm_add_epi32(X3, X0);
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X2 = _mm_xor_si128(X2, _mm_slli_epi32(T, 9));
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X2 = _mm_xor_si128(X2, _mm_srli_epi32(T, 23));
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T = _mm_add_epi32(X2, X3);
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X1 = _mm_xor_si128(X1, _mm_slli_epi32(T, 13));
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X1 = _mm_xor_si128(X1, _mm_srli_epi32(T, 19));
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T = _mm_add_epi32(X1, X2);
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X0 = _mm_xor_si128(X0, _mm_slli_epi32(T, 18));
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X0 = _mm_xor_si128(X0, _mm_srli_epi32(T, 14));
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/* Rearrange data. */
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X1 = _mm_shuffle_epi32(X1, 0x39);
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X2 = _mm_shuffle_epi32(X2, 0x4E);
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X3 = _mm_shuffle_epi32(X3, 0x93);
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}
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B[0] = _mm_add_epi32(B[0], X0);
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B[1] = _mm_add_epi32(B[1], X1);
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B[2] = _mm_add_epi32(B[2], X2);
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B[3] = _mm_add_epi32(B[3], X3);
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}
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void scrypt_1024_1_1_256_sp_sse2(const char *input, char *output, char *scratchpad)
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{
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uint8_t B[128];
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union {
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__m128i i128[8];
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uint32_t u32[32];
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} X;
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__m128i *V;
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uint32_t i, j, k;
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V = (__m128i *)(((uintptr_t)(scratchpad) + 63) & ~ (uintptr_t)(63));
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PBKDF2_SHA256((const uint8_t *)input, 80, (const uint8_t *)input, 80, 1, B, 128);
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for (k = 0; k < 2; k++) {
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for (i = 0; i < 16; i++) {
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X.u32[k * 16 + i] = le32dec(&B[(k * 16 + (i * 5 % 16)) * 4]);
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}
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}
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for (i = 0; i < 1024; i++) {
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for (k = 0; k < 8; k++)
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V[i * 8 + k] = X.i128[k];
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xor_salsa8_sse2(&X.i128[0], &X.i128[4]);
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xor_salsa8_sse2(&X.i128[4], &X.i128[0]);
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}
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for (i = 0; i < 1024; i++) {
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j = 8 * (X.u32[16] & 1023);
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for (k = 0; k < 8; k++)
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X.i128[k] = _mm_xor_si128(X.i128[k], V[j + k]);
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xor_salsa8_sse2(&X.i128[0], &X.i128[4]);
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xor_salsa8_sse2(&X.i128[4], &X.i128[0]);
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}
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for (k = 0; k < 2; k++) {
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for (i = 0; i < 16; i++) {
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le32enc(&B[(k * 16 + (i * 5 % 16)) * 4], X.u32[k * 16 + i]);
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}
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}
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PBKDF2_SHA256((const uint8_t *)input, 80, B, 128, 1, (uint8_t *)output, 32);
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}
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