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git.ipfire.org Git - thirdparty/openssl.git/blob - crypto/bn/rsaz_exp.c
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 *****************************************************************************/
46 * See crypto/bn/asm/rsaz-avx2.pl for further details.
48 void rsaz_1024_norm2red_avx2(void *red
,const void *norm
);
49 void rsaz_1024_mul_avx2(void *ret
,const void *a
,const void *b
,const void *n
,BN_ULONG k
);
50 void rsaz_1024_sqr_avx2(void *ret
,const void *a
,const void *n
,BN_ULONG k
,int cnt
);
51 void rsaz_1024_scatter5_avx2(void *tbl
,const void *val
,int i
);
52 void rsaz_1024_gather5_avx2(void *val
,const void *tbl
,int i
);
53 void rsaz_1024_red2norm_avx2(void *norm
,const void *red
);
56 # define ALIGN64 __attribute__((aligned(64)))
57 #elif defined(_MSC_VER)
58 # define ALIGN64 __declspec(align(64))
59 #elif defined(__SUNPRO_C)
61 # pragma align 64(one,two80)
63 /* not fatal, might hurt performance a little */
67 ALIGN64
static const BN_ULONG one
[40] = {
68 1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
69 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
71 ALIGN64
static const BN_ULONG two80
[40] = {
72 0,0,1<<22,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
73 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
76 void RSAZ_1024_mod_exp_avx2(BN_ULONG result_norm
[16],
77 const BN_ULONG base_norm
[16], const BN_ULONG exponent
[16],
78 const BN_ULONG m_norm
[16], const BN_ULONG RR
[16], BN_ULONG k0
)
80 unsigned char storage
[320*3+32*9*16+64]; /* 5.5KB */
81 unsigned char *p_str
= storage
+ (64-((size_t)storage
%64));
82 unsigned char *a_inv
, *m
, *result
;
83 unsigned char *table_s
= p_str
+320*3;
84 unsigned char *R2
= table_s
; /* borrow */
88 if ((((size_t)p_str
&4095)+320)>>12) {
91 m
= p_str
+ 320*2; /* should not cross page */
93 m
= p_str
; /* should not cross page */
95 a_inv
= p_str
+ 320*2;
98 rsaz_1024_norm2red_avx2(m
, m_norm
);
99 rsaz_1024_norm2red_avx2(a_inv
, base_norm
);
100 rsaz_1024_norm2red_avx2(R2
, RR
);
102 rsaz_1024_mul_avx2(R2
, R2
, R2
, m
, k0
);
103 rsaz_1024_mul_avx2(R2
, R2
, two80
, m
, k0
);
106 rsaz_1024_mul_avx2(result
, R2
, one
, m
, k0
);
107 /* table[1] = a_inv^1 */
108 rsaz_1024_mul_avx2(a_inv
, a_inv
, R2
, m
, k0
);
110 rsaz_1024_scatter5_avx2(table_s
,result
,0);
111 rsaz_1024_scatter5_avx2(table_s
,a_inv
,1);
113 /* table[2] = a_inv^2 */
114 rsaz_1024_sqr_avx2(result
, a_inv
, m
, k0
, 1);
115 rsaz_1024_scatter5_avx2(table_s
,result
,2);
117 /* this is almost 2x smaller and less than 1% slower */
118 for (index
=3; index
<32; index
++) {
119 rsaz_1024_mul_avx2(result
, result
, a_inv
, m
, k0
);
120 rsaz_1024_scatter5_avx2(table_s
,result
,index
);
123 /* table[4] = a_inv^4 */
124 rsaz_1024_sqr_avx2(result
, result
, m
, k0
, 1);
125 rsaz_1024_scatter5_avx2(table_s
,result
,4);
126 /* table[8] = a_inv^8 */
127 rsaz_1024_sqr_avx2(result
, result
, m
, k0
, 1);
128 rsaz_1024_scatter5_avx2(table_s
,result
,8);
129 /* table[16] = a_inv^16 */
130 rsaz_1024_sqr_avx2(result
, result
, m
, k0
, 1);
131 rsaz_1024_scatter5_avx2(table_s
,result
,16);
132 /* table[17] = a_inv^17 */
133 rsaz_1024_mul_avx2(result
, result
, a_inv
, m
, k0
);
134 rsaz_1024_scatter5_avx2(table_s
,result
,17);
137 rsaz_1024_gather5_avx2(result
,table_s
,2);
138 rsaz_1024_mul_avx2(result
,result
,a_inv
,m
,k0
);
139 rsaz_1024_scatter5_avx2(table_s
,result
,3);
141 rsaz_1024_sqr_avx2(result
, result
, m
, k0
, 1);
142 rsaz_1024_scatter5_avx2(table_s
,result
,6);
144 rsaz_1024_sqr_avx2(result
, result
, m
, k0
, 1);
145 rsaz_1024_scatter5_avx2(table_s
,result
,12);
147 rsaz_1024_sqr_avx2(result
, result
, m
, k0
, 1);
148 rsaz_1024_scatter5_avx2(table_s
,result
,24);
150 rsaz_1024_mul_avx2(result
, result
, a_inv
, m
, k0
);
151 rsaz_1024_scatter5_avx2(table_s
,result
,25);
154 rsaz_1024_gather5_avx2(result
,table_s
,4);
155 rsaz_1024_mul_avx2(result
,result
,a_inv
,m
,k0
);
156 rsaz_1024_scatter5_avx2(table_s
,result
,5);
158 rsaz_1024_sqr_avx2(result
, result
, m
, k0
, 1);
159 rsaz_1024_scatter5_avx2(table_s
,result
,10);
161 rsaz_1024_sqr_avx2(result
, result
, m
, k0
, 1);
162 rsaz_1024_scatter5_avx2(table_s
,result
,20);
164 rsaz_1024_mul_avx2(result
, result
, a_inv
, m
, k0
);
165 rsaz_1024_scatter5_avx2(table_s
,result
,21);
168 rsaz_1024_gather5_avx2(result
,table_s
,6);
169 rsaz_1024_mul_avx2(result
,result
,a_inv
,m
,k0
);
170 rsaz_1024_scatter5_avx2(table_s
,result
,7);
172 rsaz_1024_sqr_avx2(result
, result
, m
, k0
, 1);
173 rsaz_1024_scatter5_avx2(table_s
,result
,14);
175 rsaz_1024_sqr_avx2(result
, result
, m
, k0
, 1);
176 rsaz_1024_scatter5_avx2(table_s
,result
,28);
178 rsaz_1024_mul_avx2(result
, result
, a_inv
, m
, k0
);
179 rsaz_1024_scatter5_avx2(table_s
,result
,29);
182 rsaz_1024_gather5_avx2(result
,table_s
,8);
183 rsaz_1024_mul_avx2(result
,result
,a_inv
,m
,k0
);
184 rsaz_1024_scatter5_avx2(table_s
,result
,9);
186 rsaz_1024_sqr_avx2(result
, result
, m
, k0
, 1);
187 rsaz_1024_scatter5_avx2(table_s
,result
,18);
189 rsaz_1024_mul_avx2(result
, result
, a_inv
, m
, k0
);
190 rsaz_1024_scatter5_avx2(table_s
,result
,19);
193 rsaz_1024_gather5_avx2(result
,table_s
,10);
194 rsaz_1024_mul_avx2(result
,result
,a_inv
,m
,k0
);
195 rsaz_1024_scatter5_avx2(table_s
,result
,11);
197 rsaz_1024_sqr_avx2(result
, result
, m
, k0
, 1);
198 rsaz_1024_scatter5_avx2(table_s
,result
,22);
200 rsaz_1024_mul_avx2(result
, result
, a_inv
, m
, k0
);
201 rsaz_1024_scatter5_avx2(table_s
,result
,23);
204 rsaz_1024_gather5_avx2(result
,table_s
,12);
205 rsaz_1024_mul_avx2(result
,result
,a_inv
,m
,k0
);
206 rsaz_1024_scatter5_avx2(table_s
,result
,13);
208 rsaz_1024_sqr_avx2(result
, result
, m
, k0
, 1);
209 rsaz_1024_scatter5_avx2(table_s
,result
,26);
211 rsaz_1024_mul_avx2(result
, result
, a_inv
, m
, k0
);
212 rsaz_1024_scatter5_avx2(table_s
,result
,27);
215 rsaz_1024_gather5_avx2(result
,table_s
,14);
216 rsaz_1024_mul_avx2(result
,result
,a_inv
,m
,k0
);
217 rsaz_1024_scatter5_avx2(table_s
,result
,15);
219 rsaz_1024_sqr_avx2(result
, result
, m
, k0
, 1);
220 rsaz_1024_scatter5_avx2(table_s
,result
,30);
222 rsaz_1024_mul_avx2(result
, result
, a_inv
, m
, k0
);
223 rsaz_1024_scatter5_avx2(table_s
,result
,31);
226 /* load first window */
227 p_str
= (unsigned char*)exponent
;
228 wvalue
= p_str
[127] >> 3;
229 rsaz_1024_gather5_avx2(result
,table_s
,wvalue
);
233 while(index
> -1) { /* loop for the remaining 127 windows */
235 rsaz_1024_sqr_avx2(result
, result
, m
, k0
, 5);
237 wvalue
= *((unsigned short*)&p_str
[index
/8]);
238 wvalue
= (wvalue
>> (index
%8)) & 31;
241 rsaz_1024_gather5_avx2(a_inv
,table_s
,wvalue
); /* borrow a_inv */
242 rsaz_1024_mul_avx2(result
, result
, a_inv
, m
, k0
);
245 /* square four times */
246 rsaz_1024_sqr_avx2(result
, result
, m
, k0
, 4);
248 wvalue
= p_str
[0] & 15;
250 rsaz_1024_gather5_avx2(a_inv
,table_s
,wvalue
); /* borrow a_inv */
251 rsaz_1024_mul_avx2(result
, result
, a_inv
, m
, k0
);
253 /* from Montgomery */
254 rsaz_1024_mul_avx2(result
, result
, one
, m
, k0
);
256 rsaz_1024_red2norm_avx2(result_norm
, result
);
258 OPENSSL_cleanse(storage
,sizeof(storage
));
262 * See crypto/bn/rsaz-x86_64.pl for further details.
264 void rsaz_512_mul(void *ret
,const void *a
,const void *b
,const void *n
,BN_ULONG k
);
265 void rsaz_512_mul_scatter4(void *ret
,const void *a
,const void *n
,BN_ULONG k
,const void *tbl
,unsigned int power
);
266 void rsaz_512_mul_gather4(void *ret
,const void *a
,const void *tbl
,const void *n
,BN_ULONG k
,unsigned int power
);
267 void rsaz_512_mul_by_one(void *ret
,const void *a
,const void *n
,BN_ULONG k
);
268 void rsaz_512_sqr(void *ret
,const void *a
,const void *n
,BN_ULONG k
,int cnt
);
269 void rsaz_512_scatter4(void *tbl
, const BN_ULONG
*val
, int power
);
270 void rsaz_512_gather4(BN_ULONG
*val
, const void *tbl
, int power
);
272 void RSAZ_512_mod_exp(BN_ULONG result
[8],
273 const BN_ULONG base
[8], const BN_ULONG exponent
[8],
274 const BN_ULONG m
[8], BN_ULONG k0
, const BN_ULONG RR
[8])
276 unsigned char storage
[16*8*8+64*2+64]; /* 1.2KB */
277 unsigned char *table
= storage
+ (64-((size_t)storage
%64));
278 BN_ULONG
*a_inv
= (BN_ULONG
*)(table
+16*8*8);
279 BN_ULONG
*temp
= (BN_ULONG
*)(table
+16*8*8+8*8);
280 unsigned char *p_str
= (unsigned char*)exponent
;
284 /* table[0] = 1_inv */
285 temp
[0] = 0-m
[0]; temp
[1] = ~m
[1];
286 temp
[2] = ~m
[2]; temp
[3] = ~m
[3];
287 temp
[4] = ~m
[4]; temp
[5] = ~m
[5];
288 temp
[6] = ~m
[6]; temp
[7] = ~m
[7];
289 rsaz_512_scatter4(table
, temp
, 0);
291 /* table [1] = a_inv^1 */
292 rsaz_512_mul(a_inv
, base
, RR
, m
, k0
);
293 rsaz_512_scatter4(table
, a_inv
, 1);
295 /* table [2] = a_inv^2 */
296 rsaz_512_sqr(temp
, a_inv
, m
, k0
, 1);
297 rsaz_512_scatter4(table
, temp
, 2);
299 for (index
=3; index
<16; index
++)
300 rsaz_512_mul_scatter4(temp
, a_inv
, m
, k0
, table
, index
);
302 /* load first window */
305 rsaz_512_gather4(temp
, table
, wvalue
>>4);
306 rsaz_512_sqr(temp
, temp
, m
, k0
, 4);
307 rsaz_512_mul_gather4(temp
, temp
, table
, m
, k0
, wvalue
&0xf);
309 for (index
=62; index
>=0; index
--) {
310 wvalue
= p_str
[index
];
312 rsaz_512_sqr(temp
, temp
, m
, k0
, 4);
313 rsaz_512_mul_gather4(temp
, temp
, table
, m
, k0
, wvalue
>>4);
315 rsaz_512_sqr(temp
, temp
, m
, k0
, 4);
316 rsaz_512_mul_gather4(temp
, temp
, table
, m
, k0
, wvalue
&0x0f);
319 /* from Montgomery */
320 rsaz_512_mul_by_one(result
, temp
, m
, k0
);
322 OPENSSL_cleanse(storage
,sizeof(storage
));