diff options
Diffstat (limited to 'src/crypto/bn/rsaz_exp.c')
-rw-r--r-- | src/crypto/bn/rsaz_exp.c | 326 |
1 files changed, 326 insertions, 0 deletions
diff --git a/src/crypto/bn/rsaz_exp.c b/src/crypto/bn/rsaz_exp.c new file mode 100644 index 0000000..c802752 --- /dev/null +++ b/src/crypto/bn/rsaz_exp.c @@ -0,0 +1,326 @@ +/***************************************************************************** +* * +* 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 <openssl/base.h> + +#if !defined(OPENSSL_NO_ASM) && defined(OPENSSL_X86_64) + +#include "rsaz_exp.h" + +#include <openssl/mem.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, + *table_s = p_str+320*3, + *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), + *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)); +} + +#endif /* OPENSSL_X86_64 */ |