1 /*****************************************************************************
3 * Copyright (c) 2012, Intel Corporation *
5 * All rights reserved. *
7 * Redistribution and use in source and binary forms, with or without *
8 * modification, are permitted provided that the following conditions are *
11 * * Redistributions of source code must retain the above copyright *
12 * notice, this list of conditions and the following disclaimer. *
14 * * Redistributions in binary form must reproduce the above copyright *
15 * notice, this list of conditions and the following disclaimer in the *
16 * documentation and/or other materials provided with the *
19 * * Neither the name of the Intel Corporation nor the names of its *
20 * contributors may be used to endorse or promote products derived from *
21 * this software without specific prior written permission. *
24 * THIS SOFTWARE IS PROVIDED BY INTEL CORPORATION ""AS IS"" AND ANY *
25 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE *
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR *
27 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL INTEL CORPORATION OR *
28 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, *
29 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, *
30 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR *
31 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF *
32 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING *
33 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS *
34 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. *
36 ******************************************************************************
37 * Developers and authors: *
38 * Shay Gueron (1, 2), and Vlad Krasnov (1) *
39 * (1) Intel Corporation, Israel Development Center, Haifa, Israel *
40 * (2) University of Haifa, Israel *
41 *****************************************************************************/
43 #include <openssl/opensslconf.h>
47 NON_EMPTY_TRANSLATION_UNIT
51 * See crypto/bn/asm/rsaz-avx2.pl for further details.
53 void rsaz_1024_norm2red_avx2(void *red, const void *norm);
54 void rsaz_1024_mul_avx2(void *ret, const void *a, const void *b,
55 const void *n, BN_ULONG k);
56 void rsaz_1024_sqr_avx2(void *ret, const void *a, const void *n, BN_ULONG k,
58 void rsaz_1024_scatter5_avx2(void *tbl, const void *val, int i);
59 void rsaz_1024_gather5_avx2(void *val, const void *tbl, int i);
60 void rsaz_1024_red2norm_avx2(void *norm, const void *red);
63 # define ALIGN64 __attribute__((aligned(64)))
64 #elif defined(_MSC_VER)
65 # define ALIGN64 __declspec(align(64))
66 #elif defined(__SUNPRO_C)
68 # pragma align 64(one,two80)
70 /* not fatal, might hurt performance a little */
74 ALIGN64 static const BN_ULONG one[40] = {
75 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
76 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
79 ALIGN64 static const BN_ULONG two80[40] = {
80 0, 0, 1 << 22, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
81 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
84 void RSAZ_1024_mod_exp_avx2(BN_ULONG result_norm[16],
85 const BN_ULONG base_norm[16],
86 const BN_ULONG exponent[16],
87 const BN_ULONG m_norm[16], const BN_ULONG RR[16],
90 unsigned char storage[320 * 3 + 32 * 9 * 16 + 64]; /* 5.5KB */
91 unsigned char *p_str = storage + (64 - ((size_t)storage % 64));
92 unsigned char *a_inv, *m, *result;
93 unsigned char *table_s = p_str + 320 * 3;
94 unsigned char *R2 = table_s; /* borrow */
98 if ((((size_t)p_str & 4095) + 320) >> 12) {
101 m = p_str + 320 * 2; /* should not cross page */
103 m = p_str; /* should not cross page */
104 result = p_str + 320;
105 a_inv = p_str + 320 * 2;
108 rsaz_1024_norm2red_avx2(m, m_norm);
109 rsaz_1024_norm2red_avx2(a_inv, base_norm);
110 rsaz_1024_norm2red_avx2(R2, RR);
112 rsaz_1024_mul_avx2(R2, R2, R2, m, k0);
113 rsaz_1024_mul_avx2(R2, R2, two80, m, k0);
116 rsaz_1024_mul_avx2(result, R2, one, m, k0);
117 /* table[1] = a_inv^1 */
118 rsaz_1024_mul_avx2(a_inv, a_inv, R2, m, k0);
120 rsaz_1024_scatter5_avx2(table_s, result, 0);
121 rsaz_1024_scatter5_avx2(table_s, a_inv, 1);
123 /* table[2] = a_inv^2 */
124 rsaz_1024_sqr_avx2(result, a_inv, m, k0, 1);
125 rsaz_1024_scatter5_avx2(table_s, result, 2);
127 /* this is almost 2x smaller and less than 1% slower */
128 for (index = 3; index < 32; index++) {
129 rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
130 rsaz_1024_scatter5_avx2(table_s, result, index);
133 /* table[4] = a_inv^4 */
134 rsaz_1024_sqr_avx2(result, result, m, k0, 1);
135 rsaz_1024_scatter5_avx2(table_s, result, 4);
136 /* table[8] = a_inv^8 */
137 rsaz_1024_sqr_avx2(result, result, m, k0, 1);
138 rsaz_1024_scatter5_avx2(table_s, result, 8);
139 /* table[16] = a_inv^16 */
140 rsaz_1024_sqr_avx2(result, result, m, k0, 1);
141 rsaz_1024_scatter5_avx2(table_s, result, 16);
142 /* table[17] = a_inv^17 */
143 rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
144 rsaz_1024_scatter5_avx2(table_s, result, 17);
147 rsaz_1024_gather5_avx2(result, table_s, 2);
148 rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
149 rsaz_1024_scatter5_avx2(table_s, result, 3);
151 rsaz_1024_sqr_avx2(result, result, m, k0, 1);
152 rsaz_1024_scatter5_avx2(table_s, result, 6);
154 rsaz_1024_sqr_avx2(result, result, m, k0, 1);
155 rsaz_1024_scatter5_avx2(table_s, result, 12);
157 rsaz_1024_sqr_avx2(result, result, m, k0, 1);
158 rsaz_1024_scatter5_avx2(table_s, result, 24);
160 rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
161 rsaz_1024_scatter5_avx2(table_s, result, 25);
164 rsaz_1024_gather5_avx2(result, table_s, 4);
165 rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
166 rsaz_1024_scatter5_avx2(table_s, result, 5);
168 rsaz_1024_sqr_avx2(result, result, m, k0, 1);
169 rsaz_1024_scatter5_avx2(table_s, result, 10);
171 rsaz_1024_sqr_avx2(result, result, m, k0, 1);
172 rsaz_1024_scatter5_avx2(table_s, result, 20);
174 rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
175 rsaz_1024_scatter5_avx2(table_s, result, 21);
178 rsaz_1024_gather5_avx2(result, table_s, 6);
179 rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
180 rsaz_1024_scatter5_avx2(table_s, result, 7);
182 rsaz_1024_sqr_avx2(result, result, m, k0, 1);
183 rsaz_1024_scatter5_avx2(table_s, result, 14);
185 rsaz_1024_sqr_avx2(result, result, m, k0, 1);
186 rsaz_1024_scatter5_avx2(table_s, result, 28);
188 rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
189 rsaz_1024_scatter5_avx2(table_s, result, 29);
192 rsaz_1024_gather5_avx2(result, table_s, 8);
193 rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
194 rsaz_1024_scatter5_avx2(table_s, result, 9);
196 rsaz_1024_sqr_avx2(result, result, m, k0, 1);
197 rsaz_1024_scatter5_avx2(table_s, result, 18);
199 rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
200 rsaz_1024_scatter5_avx2(table_s, result, 19);
203 rsaz_1024_gather5_avx2(result, table_s, 10);
204 rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
205 rsaz_1024_scatter5_avx2(table_s, result, 11);
207 rsaz_1024_sqr_avx2(result, result, m, k0, 1);
208 rsaz_1024_scatter5_avx2(table_s, result, 22);
210 rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
211 rsaz_1024_scatter5_avx2(table_s, result, 23);
214 rsaz_1024_gather5_avx2(result, table_s, 12);
215 rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
216 rsaz_1024_scatter5_avx2(table_s, result, 13);
218 rsaz_1024_sqr_avx2(result, result, m, k0, 1);
219 rsaz_1024_scatter5_avx2(table_s, result, 26);
221 rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
222 rsaz_1024_scatter5_avx2(table_s, result, 27);
225 rsaz_1024_gather5_avx2(result, table_s, 14);
226 rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
227 rsaz_1024_scatter5_avx2(table_s, result, 15);
229 rsaz_1024_sqr_avx2(result, result, m, k0, 1);
230 rsaz_1024_scatter5_avx2(table_s, result, 30);
232 rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
233 rsaz_1024_scatter5_avx2(table_s, result, 31);
236 /* load first window */
237 p_str = (unsigned char *)exponent;
238 wvalue = p_str[127] >> 3;
239 rsaz_1024_gather5_avx2(result, table_s, wvalue);
243 while (index > -1) { /* loop for the remaining 127 windows */
245 rsaz_1024_sqr_avx2(result, result, m, k0, 5);
247 wvalue = *((unsigned short *)&p_str[index / 8]);
248 wvalue = (wvalue >> (index % 8)) & 31;
251 rsaz_1024_gather5_avx2(a_inv, table_s, wvalue); /* borrow a_inv */
252 rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
255 /* square four times */
256 rsaz_1024_sqr_avx2(result, result, m, k0, 4);
258 wvalue = p_str[0] & 15;
260 rsaz_1024_gather5_avx2(a_inv, table_s, wvalue); /* borrow a_inv */
261 rsaz_1024_mul_avx2(result, result, a_inv, m, k0);
263 /* from Montgomery */
264 rsaz_1024_mul_avx2(result, result, one, m, k0);
266 rsaz_1024_red2norm_avx2(result_norm, result);
268 OPENSSL_cleanse(storage, sizeof(storage));
272 * See crypto/bn/rsaz-x86_64.pl for further details.
274 void rsaz_512_mul(void *ret, const void *a, const void *b, const void *n,
276 void rsaz_512_mul_scatter4(void *ret, const void *a, const void *n,
277 BN_ULONG k, const void *tbl, unsigned int power);
278 void rsaz_512_mul_gather4(void *ret, const void *a, const void *tbl,
279 const void *n, BN_ULONG k, unsigned int power);
280 void rsaz_512_mul_by_one(void *ret, const void *a, const void *n, BN_ULONG k);
281 void rsaz_512_sqr(void *ret, const void *a, const void *n, BN_ULONG k,
283 void rsaz_512_scatter4(void *tbl, const BN_ULONG *val, int power);
284 void rsaz_512_gather4(BN_ULONG *val, const void *tbl, int power);
286 void RSAZ_512_mod_exp(BN_ULONG result[8],
287 const BN_ULONG base[8], const BN_ULONG exponent[8],
288 const BN_ULONG m[8], BN_ULONG k0, const BN_ULONG RR[8])
290 unsigned char storage[16 * 8 * 8 + 64 * 2 + 64]; /* 1.2KB */
291 unsigned char *table = storage + (64 - ((size_t)storage % 64));
292 BN_ULONG *a_inv = (BN_ULONG *)(table + 16 * 8 * 8);
293 BN_ULONG *temp = (BN_ULONG *)(table + 16 * 8 * 8 + 8 * 8);
294 unsigned char *p_str = (unsigned char *)exponent;
298 /* table[0] = 1_inv */
307 rsaz_512_scatter4(table, temp, 0);
309 /* table [1] = a_inv^1 */
310 rsaz_512_mul(a_inv, base, RR, m, k0);
311 rsaz_512_scatter4(table, a_inv, 1);
313 /* table [2] = a_inv^2 */
314 rsaz_512_sqr(temp, a_inv, m, k0, 1);
315 rsaz_512_scatter4(table, temp, 2);
317 for (index = 3; index < 16; index++)
318 rsaz_512_mul_scatter4(temp, a_inv, m, k0, table, index);
320 /* load first window */
323 rsaz_512_gather4(temp, table, wvalue >> 4);
324 rsaz_512_sqr(temp, temp, m, k0, 4);
325 rsaz_512_mul_gather4(temp, temp, table, m, k0, wvalue & 0xf);
327 for (index = 62; index >= 0; index--) {
328 wvalue = p_str[index];
330 rsaz_512_sqr(temp, temp, m, k0, 4);
331 rsaz_512_mul_gather4(temp, temp, table, m, k0, wvalue >> 4);
333 rsaz_512_sqr(temp, temp, m, k0, 4);
334 rsaz_512_mul_gather4(temp, temp, table, m, k0, wvalue & 0x0f);
337 /* from Montgomery */
338 rsaz_512_mul_by_one(result, temp, m, k0);
340 OPENSSL_cleanse(storage, sizeof(storage));