/***************************************************************************** * * * Copyright (c) 2012, Intel Corporation * * * * All rights reserved. * * * * Redistribution and use in source and binary forms, with or without * * modification, are permitted provided that the following conditions are * * met: * * * * * Redistributions of source code must retain the above copyright * * notice, this list of conditions and the following disclaimer. * * * * * Redistributions in binary form must reproduce the above copyright * * notice, this list of conditions and the following disclaimer in the * * documentation and/or other materials provided with the * * distribution. * * * * * Neither the name of the Intel Corporation nor the names of its * * contributors may be used to endorse or promote products derived from * * this software without specific prior written permission. * * * * * * THIS SOFTWARE IS PROVIDED BY INTEL CORPORATION ""AS IS"" AND ANY * * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL INTEL CORPORATION OR * * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF * * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING * * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * * ****************************************************************************** * Developers and authors: * * Shay Gueron (1, 2), and Vlad Krasnov (1) * * (1) Intel Corporation, Israel Development Center, Haifa, Israel * * (2) University of Haifa, Israel * *****************************************************************************/ #include #if !defined(OPENSSL_NO_ASM) && defined(OPENSSL_X86_64) #include "rsaz_exp.h" #include #include "../internal.h" /* * See crypto/bn/asm/rsaz-avx2.pl for further details. */ void rsaz_1024_norm2red_avx2(void *red,const void *norm); void rsaz_1024_mul_avx2(void *ret,const void *a,const void *b,const void *n,BN_ULONG k); void rsaz_1024_sqr_avx2(void *ret,const void *a,const void *n,BN_ULONG k,int cnt); void rsaz_1024_scatter5_avx2(void *tbl,const void *val,int i); void rsaz_1024_gather5_avx2(void *val,const void *tbl,int i); void rsaz_1024_red2norm_avx2(void *norm,const void *red); alignas(64) static const BN_ULONG one[40] = {1,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}; alignas(64) static const BN_ULONG two80[40] = {0,0,1<<22,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}; void RSAZ_1024_mod_exp_avx2(BN_ULONG result_norm[16], const BN_ULONG base_norm[16], const BN_ULONG exponent[16], const BN_ULONG m_norm[16], const BN_ULONG RR[16], BN_ULONG k0) { alignas(64) uint8_t storage[(320 * 3) + (32 * 9 * 16)]; /* 5.5KB */ unsigned char *a_inv, *m, *result, *table_s = storage + (320 * 3), *R2 = table_s; /* borrow */ int index; int wvalue; if (((((uintptr_t)storage & 4095) + 320) >> 12) != 0) { result = storage; a_inv = storage + 320; m = storage + (320 * 2); /* should not cross page */ } else { m = storage; /* should not cross page */ result = storage + 320; a_inv = storage + (320 * 2); } rsaz_1024_norm2red_avx2(m, m_norm); rsaz_1024_norm2red_avx2(a_inv, base_norm); rsaz_1024_norm2red_avx2(R2, RR); rsaz_1024_mul_avx2(R2, R2, R2, m, k0); rsaz_1024_mul_avx2(R2, R2, two80, m, k0); /* table[0] = 1 */ rsaz_1024_mul_avx2(result, R2, one, m, k0); /* table[1] = a_inv^1 */ rsaz_1024_mul_avx2(a_inv, a_inv, R2, m, k0); rsaz_1024_scatter5_avx2(table_s,result,0); rsaz_1024_scatter5_avx2(table_s,a_inv,1); /* table[2] = a_inv^2 */ rsaz_1024_sqr_avx2(result, a_inv, m, k0, 1); rsaz_1024_scatter5_avx2(table_s,result,2); #if 0 /* this is almost 2x smaller and less than 1% slower */ for (index=3; index<32; index++) { rsaz_1024_mul_avx2(result, result, a_inv, m, k0); rsaz_1024_scatter5_avx2(table_s,result,index); } #else /* table[4] = a_inv^4 */ rsaz_1024_sqr_avx2(result, result, m, k0, 1); rsaz_1024_scatter5_avx2(table_s,result,4); /* table[8] = a_inv^8 */ rsaz_1024_sqr_avx2(result, result, m, k0, 1); rsaz_1024_scatter5_avx2(table_s,result,8); /* table[16] = a_inv^16 */ rsaz_1024_sqr_avx2(result, result, m, k0, 1); rsaz_1024_scatter5_avx2(table_s,result,16); /* table[17] = a_inv^17 */ rsaz_1024_mul_avx2(result, result, a_inv, m, k0); rsaz_1024_scatter5_avx2(table_s,result,17); /* table[3] */ rsaz_1024_gather5_avx2(result,table_s,2); rsaz_1024_mul_avx2(result,result,a_inv,m,k0); rsaz_1024_scatter5_avx2(table_s,result,3); /* table[6] */ rsaz_1024_sqr_avx2(result, result, m, k0, 1); rsaz_1024_scatter5_avx2(table_s,result,6); /* table[12] */ rsaz_1024_sqr_avx2(result, result, m, k0, 1); rsaz_1024_scatter5_avx2(table_s,result,12); /* table[24] */ rsaz_1024_sqr_avx2(result, result, m, k0, 1); rsaz_1024_scatter5_avx2(table_s,result,24); /* table[25] */ rsaz_1024_mul_avx2(result, result, a_inv, m, k0); rsaz_1024_scatter5_avx2(table_s,result,25); /* table[5] */ rsaz_1024_gather5_avx2(result,table_s,4); rsaz_1024_mul_avx2(result,result,a_inv,m,k0); rsaz_1024_scatter5_avx2(table_s,result,5); /* table[10] */ rsaz_1024_sqr_avx2(result, result, m, k0, 1); rsaz_1024_scatter5_avx2(table_s,result,10); /* table[20] */ rsaz_1024_sqr_avx2(result, result, m, k0, 1); rsaz_1024_scatter5_avx2(table_s,result,20); /* table[21] */ rsaz_1024_mul_avx2(result, result, a_inv, m, k0); rsaz_1024_scatter5_avx2(table_s,result,21); /* table[7] */ rsaz_1024_gather5_avx2(result,table_s,6); rsaz_1024_mul_avx2(result,result,a_inv,m,k0); rsaz_1024_scatter5_avx2(table_s,result,7); /* table[14] */ rsaz_1024_sqr_avx2(result, result, m, k0, 1); rsaz_1024_scatter5_avx2(table_s,result,14); /* table[28] */ rsaz_1024_sqr_avx2(result, result, m, k0, 1); rsaz_1024_scatter5_avx2(table_s,result,28); /* table[29] */ rsaz_1024_mul_avx2(result, result, a_inv, m, k0); rsaz_1024_scatter5_avx2(table_s,result,29); /* table[9] */ rsaz_1024_gather5_avx2(result,table_s,8); rsaz_1024_mul_avx2(result,result,a_inv,m,k0); rsaz_1024_scatter5_avx2(table_s,result,9); /* table[18] */ rsaz_1024_sqr_avx2(result, result, m, k0, 1); rsaz_1024_scatter5_avx2(table_s,result,18); /* table[19] */ rsaz_1024_mul_avx2(result, result, a_inv, m, k0); rsaz_1024_scatter5_avx2(table_s,result,19); /* table[11] */ rsaz_1024_gather5_avx2(result,table_s,10); rsaz_1024_mul_avx2(result,result,a_inv,m,k0); rsaz_1024_scatter5_avx2(table_s,result,11); /* table[22] */ rsaz_1024_sqr_avx2(result, result, m, k0, 1); rsaz_1024_scatter5_avx2(table_s,result,22); /* table[23] */ rsaz_1024_mul_avx2(result, result, a_inv, m, k0); rsaz_1024_scatter5_avx2(table_s,result,23); /* table[13] */ rsaz_1024_gather5_avx2(result,table_s,12); rsaz_1024_mul_avx2(result,result,a_inv,m,k0); rsaz_1024_scatter5_avx2(table_s,result,13); /* table[26] */ rsaz_1024_sqr_avx2(result, result, m, k0, 1); rsaz_1024_scatter5_avx2(table_s,result,26); /* table[27] */ rsaz_1024_mul_avx2(result, result, a_inv, m, k0); rsaz_1024_scatter5_avx2(table_s,result,27); /* table[15] */ rsaz_1024_gather5_avx2(result,table_s,14); rsaz_1024_mul_avx2(result,result,a_inv,m,k0); rsaz_1024_scatter5_avx2(table_s,result,15); /* table[30] */ rsaz_1024_sqr_avx2(result, result, m, k0, 1); rsaz_1024_scatter5_avx2(table_s,result,30); /* table[31] */ rsaz_1024_mul_avx2(result, result, a_inv, m, k0); rsaz_1024_scatter5_avx2(table_s,result,31); #endif const uint8_t *p_str = (const uint8_t *)exponent; /* load first window */ wvalue = p_str[127] >> 3; rsaz_1024_gather5_avx2(result,table_s,wvalue); index = 1014; while(index > -1) { /* loop for the remaining 127 windows */ rsaz_1024_sqr_avx2(result, result, m, k0, 5); wvalue = *((const unsigned short*)&p_str[index / 8]); wvalue = (wvalue>> (index%8)) & 31; index-=5; rsaz_1024_gather5_avx2(a_inv,table_s,wvalue); /* borrow a_inv */ rsaz_1024_mul_avx2(result, result, a_inv, m, k0); } /* square four times */ rsaz_1024_sqr_avx2(result, result, m, k0, 4); wvalue = p_str[0] & 15; rsaz_1024_gather5_avx2(a_inv,table_s,wvalue); /* borrow a_inv */ rsaz_1024_mul_avx2(result, result, a_inv, m, k0); /* from Montgomery */ rsaz_1024_mul_avx2(result, result, one, m, k0); rsaz_1024_red2norm_avx2(result_norm, result); OPENSSL_cleanse(storage,sizeof(storage)); } #endif /* OPENSSL_X86_64 */