342 lines
13 KiB
C
342 lines
13 KiB
C
/*****************************************************************************
|
|
* *
|
|
* 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"
|
|
|
|
#ifndef RSAZ_ENABLED
|
|
NON_EMPTY_TRANSLATION_UNIT
|
|
#else
|
|
|
|
/*
|
|
* 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
|
|
/* not fatal, might hurt performance a little */
|
|
# define ALIGN64
|
|
#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));
|
|
}
|
|
|
|
#endif
|