/***************************************************************************** * * * 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 "rsaz_exp.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); #if defined(__GNUC__) # define ALIGN64 __attribute__((aligned(64))) #elif defined(_MSC_VER) # define ALIGN64 __declspec(align(64)) #elif defined(__SUNPRO_C) # define ALIGN64 # pragma align 64(one,two80) #else # define ALIGN64 /* not fatal, might hurt performance a little */ #endif ALIGN64 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 }; ALIGN64 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) { unsigned char storage[320*3+32*9*16+64]; /* 5.5KB */ unsigned char *p_str = storage + (64-((size_t)storage%64)); unsigned char *a_inv, *m, *result; unsigned char *table_s = p_str+320*3; unsigned char *R2 = table_s; /* borrow */ int index; int wvalue; if ((((size_t)p_str&4095)+320)>>12) { result = p_str; a_inv = p_str + 320; m = p_str + 320*2; /* should not cross page */ } else { m = p_str; /* should not cross page */ result = p_str + 320; a_inv = p_str + 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 /* load first window */ p_str = (unsigned char*)exponent; 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 = *((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)); } /* * See crypto/bn/rsaz-x86_64.pl for further details. */ void rsaz_512_mul(void *ret,const void *a,const void *b,const void *n,BN_ULONG k); void rsaz_512_mul_scatter4(void *ret,const void *a,const void *n,BN_ULONG k,const void *tbl,unsigned int power); void rsaz_512_mul_gather4(void *ret,const void *a,const void *tbl,const void *n,BN_ULONG k,unsigned int power); void rsaz_512_mul_by_one(void *ret,const void *a,const void *n,BN_ULONG k); void rsaz_512_sqr(void *ret,const void *a,const void *n,BN_ULONG k,int cnt); void rsaz_512_scatter4(void *tbl, const BN_ULONG *val, int power); void rsaz_512_gather4(BN_ULONG *val, const void *tbl, int power); void RSAZ_512_mod_exp(BN_ULONG result[8], const BN_ULONG base[8], const BN_ULONG exponent[8], const BN_ULONG m[8], BN_ULONG k0, const BN_ULONG RR[8]) { unsigned char storage[16*8*8+64*2+64]; /* 1.2KB */ unsigned char *table = storage + (64-((size_t)storage%64)); BN_ULONG *a_inv = (BN_ULONG *)(table+16*8*8); BN_ULONG *temp = (BN_ULONG *)(table+16*8*8+8*8); unsigned char *p_str = (unsigned char*)exponent; int index; unsigned int wvalue; /* table[0] = 1_inv */ temp[0] = 0-m[0]; temp[1] = ~m[1]; temp[2] = ~m[2]; temp[3] = ~m[3]; temp[4] = ~m[4]; temp[5] = ~m[5]; temp[6] = ~m[6]; temp[7] = ~m[7]; rsaz_512_scatter4(table, temp, 0); /* table [1] = a_inv^1 */ rsaz_512_mul(a_inv, base, RR, m, k0); rsaz_512_scatter4(table, a_inv, 1); /* table [2] = a_inv^2 */ rsaz_512_sqr(temp, a_inv, m, k0, 1); rsaz_512_scatter4(table, temp, 2); for (index=3; index<16; index++) rsaz_512_mul_scatter4(temp, a_inv, m, k0, table, index); /* load first window */ wvalue = p_str[63]; rsaz_512_gather4(temp, table, wvalue>>4); rsaz_512_sqr(temp, temp, m, k0, 4); rsaz_512_mul_gather4(temp, temp, table, m, k0, wvalue&0xf); for (index=62; index>=0; index--) { wvalue = p_str[index]; rsaz_512_sqr(temp, temp, m, k0, 4); rsaz_512_mul_gather4(temp, temp, table, m, k0, wvalue>>4); rsaz_512_sqr(temp, temp, m, k0, 4); rsaz_512_mul_gather4(temp, temp, table, m, k0, wvalue&0x0f); } /* from Montgomery */ rsaz_512_mul_by_one(result, temp, m, k0); OPENSSL_cleanse(storage,sizeof(storage)); }