2 * Copyright 2013-2016 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the OpenSSL license (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
10 /*****************************************************************************
12 * Copyright (c) 2012, Intel Corporation *
14 * All rights reserved. *
16 * Redistribution and use in source and binary forms, with or without *
17 * modification, are permitted provided that the following conditions are *
20 * * Redistributions of source code must retain the above copyright *
21 * notice, this list of conditions and the following disclaimer. *
23 * * Redistributions in binary form must reproduce the above copyright *
24 * notice, this list of conditions and the following disclaimer in the *
25 * documentation and/or other materials provided with the *
28 * * Neither the name of the Intel Corporation nor the names of its *
29 * contributors may be used to endorse or promote products derived from *
30 * this software without specific prior written permission. *
33 * THIS SOFTWARE IS PROVIDED BY INTEL CORPORATION ""AS IS"" AND ANY *
34 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE *
35 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR *
36 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL INTEL CORPORATION OR *
37 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, *
38 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, *
39 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR *
40 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF *
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42 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS *
43 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. *
45 ******************************************************************************
46 * Developers and authors: *
47 * Shay Gueron (1, 2), and Vlad Krasnov (1) *
48 * (1) Intel Corporation, Israel Development Center, Haifa, Israel *
49 * (2) University of Haifa, Israel *
50 *****************************************************************************/
52 #include <openssl/opensslconf.h>
56 NON_EMPTY_TRANSLATION_UNIT
60 * See crypto/bn/asm/rsaz-avx2.pl for further details.
62 void rsaz_1024_norm2red_avx2(void *red, const void *norm);
63 void rsaz_1024_mul_avx2(void *ret, const void *a, const void *b,
64 const void *n, BN_ULONG k);
65 void rsaz_1024_sqr_avx2(void *ret, const void *a, const void *n, BN_ULONG k,
67 void rsaz_1024_scatter5_avx2(void *tbl, const void *val, int i);
68 void rsaz_1024_gather5_avx2(void *val, const void *tbl, int i);
69 void rsaz_1024_red2norm_avx2(void *norm, const void *red);
72 # define ALIGN64 __attribute__((aligned(64)))
73 #elif defined(_MSC_VER)
74 # define ALIGN64 __declspec(align(64))
75 #elif defined(__SUNPRO_C)
77 # pragma align 64(one,two80)
79 /* not fatal, might hurt performance a little */
83 ALIGN64 static const BN_ULONG one[40] = {
84 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
85 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
88 ALIGN64 static const BN_ULONG two80[40] = {
89 0, 0, 1 << 22, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
90 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
93 void RSAZ_1024_mod_exp_avx2(BN_ULONG result_norm[16],
94 const BN_ULONG base_norm[16],
95 const BN_ULONG exponent[16],
96 const BN_ULONG m_norm[16], const BN_ULONG RR[16],
99 unsigned char storage[320 * 3 + 32 * 9 * 16 + 64]; /* 5.5KB */
100 unsigned char *p_str = storage + (64 - ((size_t)storage % 64));
101 unsigned char *a_inv, *m, *result;
102 unsigned char *table_s = p_str + 320 * 3;
103 unsigned char *R2 = table_s; /* borrow */
107 if ((((size_t)p_str & 4095) + 320) >> 12) {
110 m = p_str + 320 * 2; /* should not cross page */
112 m = p_str; /* should not cross page */
113 result = p_str + 320;
114 a_inv = p_str + 320 * 2;
117 rsaz_1024_norm2red_avx2(m, m_norm);
118 rsaz_1024_norm2red_avx2(a_inv, base_norm);
119 rsaz_1024_norm2red_avx2(R2, RR);
121 rsaz_1024_mul_avx2(R2, R2, R2, m, k0);
122 rsaz_1024_mul_avx2(R2, R2, two80, m, k0);
125 rsaz_1024_mul_avx2(result, R2, one, m, k0);
126 /* table[1] = a_inv^1 */
127 rsaz_1024_mul_avx2(a_inv, a_inv, R2, m, k0);
129 rsaz_1024_scatter5_avx2(table_s, result, 0);
130 rsaz_1024_scatter5_avx2(table_s, a_inv, 1);
132 /* table[2] = a_inv^2 */
133 rsaz_1024_sqr_avx2(result, a_inv, m, k0, 1);
134 rsaz_1024_scatter5_avx2(table_s, result, 2);
136 /* this is almost 2x smaller and less than 1% slower */
137 for (index = 3; index < 32; index++) {
138 rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
139 rsaz_1024_scatter5_avx2(table_s, result, index);
142 /* table[4] = a_inv^4 */
143 rsaz_1024_sqr_avx2(result, result, m, k0, 1);
144 rsaz_1024_scatter5_avx2(table_s, result, 4);
145 /* table[8] = a_inv^8 */
146 rsaz_1024_sqr_avx2(result, result, m, k0, 1);
147 rsaz_1024_scatter5_avx2(table_s, result, 8);
148 /* table[16] = a_inv^16 */
149 rsaz_1024_sqr_avx2(result, result, m, k0, 1);
150 rsaz_1024_scatter5_avx2(table_s, result, 16);
151 /* table[17] = a_inv^17 */
152 rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
153 rsaz_1024_scatter5_avx2(table_s, result, 17);
156 rsaz_1024_gather5_avx2(result, table_s, 2);
157 rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
158 rsaz_1024_scatter5_avx2(table_s, result, 3);
160 rsaz_1024_sqr_avx2(result, result, m, k0, 1);
161 rsaz_1024_scatter5_avx2(table_s, result, 6);
163 rsaz_1024_sqr_avx2(result, result, m, k0, 1);
164 rsaz_1024_scatter5_avx2(table_s, result, 12);
166 rsaz_1024_sqr_avx2(result, result, m, k0, 1);
167 rsaz_1024_scatter5_avx2(table_s, result, 24);
169 rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
170 rsaz_1024_scatter5_avx2(table_s, result, 25);
173 rsaz_1024_gather5_avx2(result, table_s, 4);
174 rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
175 rsaz_1024_scatter5_avx2(table_s, result, 5);
177 rsaz_1024_sqr_avx2(result, result, m, k0, 1);
178 rsaz_1024_scatter5_avx2(table_s, result, 10);
180 rsaz_1024_sqr_avx2(result, result, m, k0, 1);
181 rsaz_1024_scatter5_avx2(table_s, result, 20);
183 rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
184 rsaz_1024_scatter5_avx2(table_s, result, 21);
187 rsaz_1024_gather5_avx2(result, table_s, 6);
188 rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
189 rsaz_1024_scatter5_avx2(table_s, result, 7);
191 rsaz_1024_sqr_avx2(result, result, m, k0, 1);
192 rsaz_1024_scatter5_avx2(table_s, result, 14);
194 rsaz_1024_sqr_avx2(result, result, m, k0, 1);
195 rsaz_1024_scatter5_avx2(table_s, result, 28);
197 rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
198 rsaz_1024_scatter5_avx2(table_s, result, 29);
201 rsaz_1024_gather5_avx2(result, table_s, 8);
202 rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
203 rsaz_1024_scatter5_avx2(table_s, result, 9);
205 rsaz_1024_sqr_avx2(result, result, m, k0, 1);
206 rsaz_1024_scatter5_avx2(table_s, result, 18);
208 rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
209 rsaz_1024_scatter5_avx2(table_s, result, 19);
212 rsaz_1024_gather5_avx2(result, table_s, 10);
213 rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
214 rsaz_1024_scatter5_avx2(table_s, result, 11);
216 rsaz_1024_sqr_avx2(result, result, m, k0, 1);
217 rsaz_1024_scatter5_avx2(table_s, result, 22);
219 rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
220 rsaz_1024_scatter5_avx2(table_s, result, 23);
223 rsaz_1024_gather5_avx2(result, table_s, 12);
224 rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
225 rsaz_1024_scatter5_avx2(table_s, result, 13);
227 rsaz_1024_sqr_avx2(result, result, m, k0, 1);
228 rsaz_1024_scatter5_avx2(table_s, result, 26);
230 rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
231 rsaz_1024_scatter5_avx2(table_s, result, 27);
234 rsaz_1024_gather5_avx2(result, table_s, 14);
235 rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
236 rsaz_1024_scatter5_avx2(table_s, result, 15);
238 rsaz_1024_sqr_avx2(result, result, m, k0, 1);
239 rsaz_1024_scatter5_avx2(table_s, result, 30);
241 rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
242 rsaz_1024_scatter5_avx2(table_s, result, 31);
245 /* load first window */
246 p_str = (unsigned char *)exponent;
247 wvalue = p_str[127] >> 3;
248 rsaz_1024_gather5_avx2(result, table_s, wvalue);
252 while (index > -1) { /* loop for the remaining 127 windows */
254 rsaz_1024_sqr_avx2(result, result, m, k0, 5);
256 wvalue = (p_str[(index / 8) + 1] << 8) | p_str[index / 8];
257 wvalue = (wvalue >> (index % 8)) & 31;
260 rsaz_1024_gather5_avx2(a_inv, table_s, wvalue); /* borrow a_inv */
261 rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
264 /* square four times */
265 rsaz_1024_sqr_avx2(result, result, m, k0, 4);
267 wvalue = p_str[0] & 15;
269 rsaz_1024_gather5_avx2(a_inv, table_s, wvalue); /* borrow a_inv */
270 rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
272 /* from Montgomery */
273 rsaz_1024_mul_avx2(result, result, one, m, k0);
275 rsaz_1024_red2norm_avx2(result_norm, result);
277 OPENSSL_cleanse(storage, sizeof(storage));
281 * See crypto/bn/rsaz-x86_64.pl for further details.
283 void rsaz_512_mul(void *ret, const void *a, const void *b, const void *n,
285 void rsaz_512_mul_scatter4(void *ret, const void *a, const void *n,
286 BN_ULONG k, const void *tbl, unsigned int power);
287 void rsaz_512_mul_gather4(void *ret, const void *a, const void *tbl,
288 const void *n, BN_ULONG k, unsigned int power);
289 void rsaz_512_mul_by_one(void *ret, const void *a, const void *n, BN_ULONG k);
290 void rsaz_512_sqr(void *ret, const void *a, const void *n, BN_ULONG k,
292 void rsaz_512_scatter4(void *tbl, const BN_ULONG *val, int power);
293 void rsaz_512_gather4(BN_ULONG *val, const void *tbl, int power);
295 void RSAZ_512_mod_exp(BN_ULONG result[8],
296 const BN_ULONG base[8], const BN_ULONG exponent[8],
297 const BN_ULONG m[8], BN_ULONG k0, const BN_ULONG RR[8])
299 unsigned char storage[16 * 8 * 8 + 64 * 2 + 64]; /* 1.2KB */
300 unsigned char *table = storage + (64 - ((size_t)storage % 64));
301 BN_ULONG *a_inv = (BN_ULONG *)(table + 16 * 8 * 8);
302 BN_ULONG *temp = (BN_ULONG *)(table + 16 * 8 * 8 + 8 * 8);
303 unsigned char *p_str = (unsigned char *)exponent;
307 /* table[0] = 1_inv */
316 rsaz_512_scatter4(table, temp, 0);
318 /* table [1] = a_inv^1 */
319 rsaz_512_mul(a_inv, base, RR, m, k0);
320 rsaz_512_scatter4(table, a_inv, 1);
322 /* table [2] = a_inv^2 */
323 rsaz_512_sqr(temp, a_inv, m, k0, 1);
324 rsaz_512_scatter4(table, temp, 2);
326 for (index = 3; index < 16; index++)
327 rsaz_512_mul_scatter4(temp, a_inv, m, k0, table, index);
329 /* load first window */
332 rsaz_512_gather4(temp, table, wvalue >> 4);
333 rsaz_512_sqr(temp, temp, m, k0, 4);
334 rsaz_512_mul_gather4(temp, temp, table, m, k0, wvalue & 0xf);
336 for (index = 62; index >= 0; index--) {
337 wvalue = p_str[index];
339 rsaz_512_sqr(temp, temp, m, k0, 4);
340 rsaz_512_mul_gather4(temp, temp, table, m, k0, wvalue >> 4);
342 rsaz_512_sqr(temp, temp, m, k0, 4);
343 rsaz_512_mul_gather4(temp, temp, table, m, k0, wvalue & 0x0f);
346 /* from Montgomery */
347 rsaz_512_mul_by_one(result, temp, m, k0);
349 OPENSSL_cleanse(storage, sizeof(storage));