322 lines
12 KiB
C
322 lines
12 KiB
C
/*****************************************************************************
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* *
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* Copyright (c) 2012, Intel Corporation *
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* *
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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 are *
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* met: *
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* *
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* * 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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* *
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* * 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 *
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* distribution. *
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* *
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* * Neither the name of the Intel Corporation nor the names of its *
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* contributors may be used to endorse or promote products derived from *
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* this software without specific prior written permission. *
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* *
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* *
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* THIS SOFTWARE IS PROVIDED BY INTEL CORPORATION ""AS IS"" AND ANY *
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE *
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR *
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL INTEL CORPORATION OR *
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, *
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, *
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR *
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF *
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING *
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS *
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. *
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* *
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******************************************************************************
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* Developers and authors: *
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* Shay Gueron (1, 2), and Vlad Krasnov (1) *
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* (1) Intel Corporation, Israel Development Center, Haifa, Israel *
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* (2) University of Haifa, Israel *
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*****************************************************************************/
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#include "rsaz_exp.h"
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/*
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* See crypto/bn/asm/rsaz-avx2.pl for further details.
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*/
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void rsaz_1024_norm2red_avx2(void *red,const void *norm);
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void rsaz_1024_mul_avx2(void *ret,const void *a,const void *b,const void *n,BN_ULONG k);
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void rsaz_1024_sqr_avx2(void *ret,const void *a,const void *n,BN_ULONG k,int cnt);
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void rsaz_1024_scatter5_avx2(void *tbl,const void *val,int i);
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void rsaz_1024_gather5_avx2(void *val,const void *tbl,int i);
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void rsaz_1024_red2norm_avx2(void *norm,const void *red);
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#if defined(__GNUC__)
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# define ALIGN64 __attribute__((aligned(64)))
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#elif defined(_MSC_VER)
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# define ALIGN64 __declspec(align(64))
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#elif defined(__SUNPRO_C)
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# define ALIGN64
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# pragma align 64(one,two80)
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#else
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# define ALIGN64 /* not fatal, might hurt performance a little */
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#endif
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ALIGN64 static const BN_ULONG one[40] = {
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1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
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};
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ALIGN64 static const BN_ULONG two80[40] = {
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0,0,1<<22,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
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};
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void RSAZ_1024_mod_exp_avx2(BN_ULONG result_norm[16],
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const BN_ULONG base_norm[16], const BN_ULONG exponent[16],
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const BN_ULONG m_norm[16], const BN_ULONG RR[16], BN_ULONG k0)
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{
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unsigned char storage[320*3+32*9*16+64]; /* 5.5KB */
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unsigned char *p_str = storage + (64-((size_t)storage%64));
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unsigned char *a_inv, *m, *result;
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unsigned char *table_s = p_str+320*3;
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unsigned char *R2 = table_s; /* borrow */
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int index;
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int wvalue;
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if ((((size_t)p_str&4095)+320)>>12) {
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result = p_str;
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a_inv = p_str + 320;
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m = p_str + 320*2; /* should not cross page */
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} else {
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m = p_str; /* should not cross page */
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result = p_str + 320;
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a_inv = p_str + 320*2;
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}
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rsaz_1024_norm2red_avx2(m, m_norm);
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rsaz_1024_norm2red_avx2(a_inv, base_norm);
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rsaz_1024_norm2red_avx2(R2, RR);
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rsaz_1024_mul_avx2(R2, R2, R2, m, k0);
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rsaz_1024_mul_avx2(R2, R2, two80, m, k0);
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/* table[0] = 1 */
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rsaz_1024_mul_avx2(result, R2, one, m, k0);
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/* table[1] = a_inv^1 */
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rsaz_1024_mul_avx2(a_inv, a_inv, R2, m, k0);
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rsaz_1024_scatter5_avx2(table_s,result,0);
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rsaz_1024_scatter5_avx2(table_s,a_inv,1);
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/* table[2] = a_inv^2 */
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rsaz_1024_sqr_avx2(result, a_inv, m, k0, 1);
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rsaz_1024_scatter5_avx2(table_s,result,2);
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#if 0
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/* this is almost 2x smaller and less than 1% slower */
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for (index=3; index<32; index++) {
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rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
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rsaz_1024_scatter5_avx2(table_s,result,index);
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}
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#else
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/* table[4] = a_inv^4 */
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rsaz_1024_sqr_avx2(result, result, m, k0, 1);
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rsaz_1024_scatter5_avx2(table_s,result,4);
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/* table[8] = a_inv^8 */
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rsaz_1024_sqr_avx2(result, result, m, k0, 1);
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rsaz_1024_scatter5_avx2(table_s,result,8);
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/* table[16] = a_inv^16 */
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rsaz_1024_sqr_avx2(result, result, m, k0, 1);
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rsaz_1024_scatter5_avx2(table_s,result,16);
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/* table[17] = a_inv^17 */
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rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
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rsaz_1024_scatter5_avx2(table_s,result,17);
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/* table[3] */
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rsaz_1024_gather5_avx2(result,table_s,2);
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rsaz_1024_mul_avx2(result,result,a_inv,m,k0);
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rsaz_1024_scatter5_avx2(table_s,result,3);
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/* table[6] */
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rsaz_1024_sqr_avx2(result, result, m, k0, 1);
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rsaz_1024_scatter5_avx2(table_s,result,6);
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/* table[12] */
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rsaz_1024_sqr_avx2(result, result, m, k0, 1);
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rsaz_1024_scatter5_avx2(table_s,result,12);
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/* table[24] */
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rsaz_1024_sqr_avx2(result, result, m, k0, 1);
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rsaz_1024_scatter5_avx2(table_s,result,24);
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/* table[25] */
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rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
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rsaz_1024_scatter5_avx2(table_s,result,25);
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/* table[5] */
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rsaz_1024_gather5_avx2(result,table_s,4);
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rsaz_1024_mul_avx2(result,result,a_inv,m,k0);
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rsaz_1024_scatter5_avx2(table_s,result,5);
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/* table[10] */
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rsaz_1024_sqr_avx2(result, result, m, k0, 1);
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rsaz_1024_scatter5_avx2(table_s,result,10);
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/* table[20] */
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rsaz_1024_sqr_avx2(result, result, m, k0, 1);
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rsaz_1024_scatter5_avx2(table_s,result,20);
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/* table[21] */
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rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
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rsaz_1024_scatter5_avx2(table_s,result,21);
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/* table[7] */
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rsaz_1024_gather5_avx2(result,table_s,6);
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rsaz_1024_mul_avx2(result,result,a_inv,m,k0);
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rsaz_1024_scatter5_avx2(table_s,result,7);
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/* table[14] */
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rsaz_1024_sqr_avx2(result, result, m, k0, 1);
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rsaz_1024_scatter5_avx2(table_s,result,14);
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/* table[28] */
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rsaz_1024_sqr_avx2(result, result, m, k0, 1);
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rsaz_1024_scatter5_avx2(table_s,result,28);
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/* table[29] */
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rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
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rsaz_1024_scatter5_avx2(table_s,result,29);
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/* table[9] */
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rsaz_1024_gather5_avx2(result,table_s,8);
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rsaz_1024_mul_avx2(result,result,a_inv,m,k0);
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rsaz_1024_scatter5_avx2(table_s,result,9);
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/* table[18] */
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rsaz_1024_sqr_avx2(result, result, m, k0, 1);
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rsaz_1024_scatter5_avx2(table_s,result,18);
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/* table[19] */
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rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
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rsaz_1024_scatter5_avx2(table_s,result,19);
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/* table[11] */
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rsaz_1024_gather5_avx2(result,table_s,10);
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rsaz_1024_mul_avx2(result,result,a_inv,m,k0);
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rsaz_1024_scatter5_avx2(table_s,result,11);
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/* table[22] */
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rsaz_1024_sqr_avx2(result, result, m, k0, 1);
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rsaz_1024_scatter5_avx2(table_s,result,22);
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/* table[23] */
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rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
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rsaz_1024_scatter5_avx2(table_s,result,23);
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/* table[13] */
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rsaz_1024_gather5_avx2(result,table_s,12);
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rsaz_1024_mul_avx2(result,result,a_inv,m,k0);
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rsaz_1024_scatter5_avx2(table_s,result,13);
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/* table[26] */
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rsaz_1024_sqr_avx2(result, result, m, k0, 1);
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rsaz_1024_scatter5_avx2(table_s,result,26);
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/* table[27] */
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rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
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rsaz_1024_scatter5_avx2(table_s,result,27);
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/* table[15] */
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rsaz_1024_gather5_avx2(result,table_s,14);
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rsaz_1024_mul_avx2(result,result,a_inv,m,k0);
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rsaz_1024_scatter5_avx2(table_s,result,15);
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/* table[30] */
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rsaz_1024_sqr_avx2(result, result, m, k0, 1);
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rsaz_1024_scatter5_avx2(table_s,result,30);
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/* table[31] */
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rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
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rsaz_1024_scatter5_avx2(table_s,result,31);
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#endif
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/* load first window */
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p_str = (unsigned char*)exponent;
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wvalue = p_str[127] >> 3;
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rsaz_1024_gather5_avx2(result,table_s,wvalue);
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index = 1014;
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while(index > -1) { /* loop for the remaining 127 windows */
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rsaz_1024_sqr_avx2(result, result, m, k0, 5);
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wvalue = *((unsigned short*)&p_str[index/8]);
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wvalue = (wvalue>> (index%8)) & 31;
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index-=5;
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rsaz_1024_gather5_avx2(a_inv,table_s,wvalue); /* borrow a_inv */
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rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
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}
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/* square four times */
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rsaz_1024_sqr_avx2(result, result, m, k0, 4);
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wvalue = p_str[0] & 15;
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rsaz_1024_gather5_avx2(a_inv,table_s,wvalue); /* borrow a_inv */
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rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
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/* from Montgomery */
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rsaz_1024_mul_avx2(result, result, one, m, k0);
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rsaz_1024_red2norm_avx2(result_norm, result);
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OPENSSL_cleanse(storage,sizeof(storage));
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}
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/*
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* See crypto/bn/rsaz-x86_64.pl for further details.
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*/
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void rsaz_512_mul(void *ret,const void *a,const void *b,const void *n,BN_ULONG k);
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void rsaz_512_mul_scatter4(void *ret,const void *a,const void *n,BN_ULONG k,const void *tbl,unsigned int power);
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void rsaz_512_mul_gather4(void *ret,const void *a,const void *tbl,const void *n,BN_ULONG k,unsigned int power);
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void rsaz_512_mul_by_one(void *ret,const void *a,const void *n,BN_ULONG k);
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void rsaz_512_sqr(void *ret,const void *a,const void *n,BN_ULONG k,int cnt);
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void rsaz_512_scatter4(void *tbl, const BN_ULONG *val, int power);
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void rsaz_512_gather4(BN_ULONG *val, const void *tbl, int power);
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void RSAZ_512_mod_exp(BN_ULONG result[8],
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const BN_ULONG base[8], const BN_ULONG exponent[8],
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const BN_ULONG m[8], BN_ULONG k0, const BN_ULONG RR[8])
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{
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unsigned char storage[16*8*8+64*2+64]; /* 1.2KB */
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unsigned char *table = storage + (64-((size_t)storage%64));
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BN_ULONG *a_inv = (BN_ULONG *)(table+16*8*8);
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BN_ULONG *temp = (BN_ULONG *)(table+16*8*8+8*8);
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unsigned char *p_str = (unsigned char*)exponent;
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int index;
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unsigned int wvalue;
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/* table[0] = 1_inv */
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temp[0] = 0-m[0]; temp[1] = ~m[1];
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temp[2] = ~m[2]; temp[3] = ~m[3];
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temp[4] = ~m[4]; temp[5] = ~m[5];
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temp[6] = ~m[6]; temp[7] = ~m[7];
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rsaz_512_scatter4(table, temp, 0);
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/* table [1] = a_inv^1 */
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rsaz_512_mul(a_inv, base, RR, m, k0);
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rsaz_512_scatter4(table, a_inv, 1);
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/* table [2] = a_inv^2 */
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rsaz_512_sqr(temp, a_inv, m, k0, 1);
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rsaz_512_scatter4(table, temp, 2);
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for (index=3; index<16; index++)
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rsaz_512_mul_scatter4(temp, a_inv, m, k0, table, index);
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/* load first window */
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wvalue = p_str[63];
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rsaz_512_gather4(temp, table, wvalue>>4);
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rsaz_512_sqr(temp, temp, m, k0, 4);
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rsaz_512_mul_gather4(temp, temp, table, m, k0, wvalue&0xf);
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for (index=62; index>=0; index--) {
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wvalue = p_str[index];
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rsaz_512_sqr(temp, temp, m, k0, 4);
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rsaz_512_mul_gather4(temp, temp, table, m, k0, wvalue>>4);
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rsaz_512_sqr(temp, temp, m, k0, 4);
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rsaz_512_mul_gather4(temp, temp, table, m, k0, wvalue&0x0f);
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}
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/* from Montgomery */
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rsaz_512_mul_by_one(result, temp, m, k0);
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OPENSSL_cleanse(storage,sizeof(storage));
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}
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