summaryrefslogtreecommitdiff
path: root/src/lib/libcrypto/ec/ecp_mont.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/lib/libcrypto/ec/ecp_mont.c')
-rw-r--r--src/lib/libcrypto/ec/ecp_mont.c315
1 files changed, 0 insertions, 315 deletions
diff --git a/src/lib/libcrypto/ec/ecp_mont.c b/src/lib/libcrypto/ec/ecp_mont.c
deleted file mode 100644
index 9fc4a466a5..0000000000
--- a/src/lib/libcrypto/ec/ecp_mont.c
+++ /dev/null
@@ -1,315 +0,0 @@
1/* crypto/ec/ecp_mont.c */
2/*
3 * Originally written by Bodo Moeller for the OpenSSL project.
4 */
5/* ====================================================================
6 * Copyright (c) 1998-2001 The OpenSSL Project. All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 *
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 *
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in
17 * the documentation and/or other materials provided with the
18 * distribution.
19 *
20 * 3. All advertising materials mentioning features or use of this
21 * software must display the following acknowledgment:
22 * "This product includes software developed by the OpenSSL Project
23 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
24 *
25 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
26 * endorse or promote products derived from this software without
27 * prior written permission. For written permission, please contact
28 * openssl-core@openssl.org.
29 *
30 * 5. Products derived from this software may not be called "OpenSSL"
31 * nor may "OpenSSL" appear in their names without prior written
32 * permission of the OpenSSL Project.
33 *
34 * 6. Redistributions of any form whatsoever must retain the following
35 * acknowledgment:
36 * "This product includes software developed by the OpenSSL Project
37 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
38 *
39 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
40 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
41 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
42 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
43 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
44 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
45 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
46 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
48 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
49 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
50 * OF THE POSSIBILITY OF SUCH DAMAGE.
51 * ====================================================================
52 *
53 * This product includes cryptographic software written by Eric Young
54 * (eay@cryptsoft.com). This product includes software written by Tim
55 * Hudson (tjh@cryptsoft.com).
56 *
57 */
58/* ====================================================================
59 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
60 * Portions of this software developed by SUN MICROSYSTEMS, INC.,
61 * and contributed to the OpenSSL project.
62 */
63
64#include <openssl/err.h>
65
66#include "ec_lcl.h"
67
68
69const EC_METHOD *EC_GFp_mont_method(void)
70 {
71 static const EC_METHOD ret = {
72 NID_X9_62_prime_field,
73 ec_GFp_mont_group_init,
74 ec_GFp_mont_group_finish,
75 ec_GFp_mont_group_clear_finish,
76 ec_GFp_mont_group_copy,
77 ec_GFp_mont_group_set_curve,
78 ec_GFp_simple_group_get_curve,
79 ec_GFp_simple_group_get_degree,
80 ec_GFp_simple_group_check_discriminant,
81 ec_GFp_simple_point_init,
82 ec_GFp_simple_point_finish,
83 ec_GFp_simple_point_clear_finish,
84 ec_GFp_simple_point_copy,
85 ec_GFp_simple_point_set_to_infinity,
86 ec_GFp_simple_set_Jprojective_coordinates_GFp,
87 ec_GFp_simple_get_Jprojective_coordinates_GFp,
88 ec_GFp_simple_point_set_affine_coordinates,
89 ec_GFp_simple_point_get_affine_coordinates,
90 ec_GFp_simple_set_compressed_coordinates,
91 ec_GFp_simple_point2oct,
92 ec_GFp_simple_oct2point,
93 ec_GFp_simple_add,
94 ec_GFp_simple_dbl,
95 ec_GFp_simple_invert,
96 ec_GFp_simple_is_at_infinity,
97 ec_GFp_simple_is_on_curve,
98 ec_GFp_simple_cmp,
99 ec_GFp_simple_make_affine,
100 ec_GFp_simple_points_make_affine,
101 0 /* mul */,
102 0 /* precompute_mult */,
103 0 /* have_precompute_mult */,
104 ec_GFp_mont_field_mul,
105 ec_GFp_mont_field_sqr,
106 0 /* field_div */,
107 ec_GFp_mont_field_encode,
108 ec_GFp_mont_field_decode,
109 ec_GFp_mont_field_set_to_one };
110
111 return &ret;
112 }
113
114
115int ec_GFp_mont_group_init(EC_GROUP *group)
116 {
117 int ok;
118
119 ok = ec_GFp_simple_group_init(group);
120 group->field_data1 = NULL;
121 group->field_data2 = NULL;
122 return ok;
123 }
124
125
126void ec_GFp_mont_group_finish(EC_GROUP *group)
127 {
128 if (group->field_data1 != NULL)
129 {
130 BN_MONT_CTX_free(group->field_data1);
131 group->field_data1 = NULL;
132 }
133 if (group->field_data2 != NULL)
134 {
135 BN_free(group->field_data2);
136 group->field_data2 = NULL;
137 }
138 ec_GFp_simple_group_finish(group);
139 }
140
141
142void ec_GFp_mont_group_clear_finish(EC_GROUP *group)
143 {
144 if (group->field_data1 != NULL)
145 {
146 BN_MONT_CTX_free(group->field_data1);
147 group->field_data1 = NULL;
148 }
149 if (group->field_data2 != NULL)
150 {
151 BN_clear_free(group->field_data2);
152 group->field_data2 = NULL;
153 }
154 ec_GFp_simple_group_clear_finish(group);
155 }
156
157
158int ec_GFp_mont_group_copy(EC_GROUP *dest, const EC_GROUP *src)
159 {
160 if (dest->field_data1 != NULL)
161 {
162 BN_MONT_CTX_free(dest->field_data1);
163 dest->field_data1 = NULL;
164 }
165 if (dest->field_data2 != NULL)
166 {
167 BN_clear_free(dest->field_data2);
168 dest->field_data2 = NULL;
169 }
170
171 if (!ec_GFp_simple_group_copy(dest, src)) return 0;
172
173 if (src->field_data1 != NULL)
174 {
175 dest->field_data1 = BN_MONT_CTX_new();
176 if (dest->field_data1 == NULL) return 0;
177 if (!BN_MONT_CTX_copy(dest->field_data1, src->field_data1)) goto err;
178 }
179 if (src->field_data2 != NULL)
180 {
181 dest->field_data2 = BN_dup(src->field_data2);
182 if (dest->field_data2 == NULL) goto err;
183 }
184
185 return 1;
186
187 err:
188 if (dest->field_data1 != NULL)
189 {
190 BN_MONT_CTX_free(dest->field_data1);
191 dest->field_data1 = NULL;
192 }
193 return 0;
194 }
195
196
197int ec_GFp_mont_group_set_curve(EC_GROUP *group, const BIGNUM *p, const BIGNUM *a, const BIGNUM *b, BN_CTX *ctx)
198 {
199 BN_CTX *new_ctx = NULL;
200 BN_MONT_CTX *mont = NULL;
201 BIGNUM *one = NULL;
202 int ret = 0;
203
204 if (group->field_data1 != NULL)
205 {
206 BN_MONT_CTX_free(group->field_data1);
207 group->field_data1 = NULL;
208 }
209 if (group->field_data2 != NULL)
210 {
211 BN_free(group->field_data2);
212 group->field_data2 = NULL;
213 }
214
215 if (ctx == NULL)
216 {
217 ctx = new_ctx = BN_CTX_new();
218 if (ctx == NULL)
219 return 0;
220 }
221
222 mont = BN_MONT_CTX_new();
223 if (mont == NULL) goto err;
224 if (!BN_MONT_CTX_set(mont, p, ctx))
225 {
226 ECerr(EC_F_EC_GFP_MONT_GROUP_SET_CURVE, ERR_R_BN_LIB);
227 goto err;
228 }
229 one = BN_new();
230 if (one == NULL) goto err;
231 if (!BN_to_montgomery(one, BN_value_one(), mont, ctx)) goto err;
232
233 group->field_data1 = mont;
234 mont = NULL;
235 group->field_data2 = one;
236 one = NULL;
237
238 ret = ec_GFp_simple_group_set_curve(group, p, a, b, ctx);
239
240 if (!ret)
241 {
242 BN_MONT_CTX_free(group->field_data1);
243 group->field_data1 = NULL;
244 BN_free(group->field_data2);
245 group->field_data2 = NULL;
246 }
247
248 err:
249 if (new_ctx != NULL)
250 BN_CTX_free(new_ctx);
251 if (mont != NULL)
252 BN_MONT_CTX_free(mont);
253 return ret;
254 }
255
256
257int ec_GFp_mont_field_mul(const EC_GROUP *group, BIGNUM *r, const BIGNUM *a, const BIGNUM *b, BN_CTX *ctx)
258 {
259 if (group->field_data1 == NULL)
260 {
261 ECerr(EC_F_EC_GFP_MONT_FIELD_MUL, EC_R_NOT_INITIALIZED);
262 return 0;
263 }
264
265 return BN_mod_mul_montgomery(r, a, b, group->field_data1, ctx);
266 }
267
268
269int ec_GFp_mont_field_sqr(const EC_GROUP *group, BIGNUM *r, const BIGNUM *a, BN_CTX *ctx)
270 {
271 if (group->field_data1 == NULL)
272 {
273 ECerr(EC_F_EC_GFP_MONT_FIELD_SQR, EC_R_NOT_INITIALIZED);
274 return 0;
275 }
276
277 return BN_mod_mul_montgomery(r, a, a, group->field_data1, ctx);
278 }
279
280
281int ec_GFp_mont_field_encode(const EC_GROUP *group, BIGNUM *r, const BIGNUM *a, BN_CTX *ctx)
282 {
283 if (group->field_data1 == NULL)
284 {
285 ECerr(EC_F_EC_GFP_MONT_FIELD_ENCODE, EC_R_NOT_INITIALIZED);
286 return 0;
287 }
288
289 return BN_to_montgomery(r, a, (BN_MONT_CTX *)group->field_data1, ctx);
290 }
291
292
293int ec_GFp_mont_field_decode(const EC_GROUP *group, BIGNUM *r, const BIGNUM *a, BN_CTX *ctx)
294 {
295 if (group->field_data1 == NULL)
296 {
297 ECerr(EC_F_EC_GFP_MONT_FIELD_DECODE, EC_R_NOT_INITIALIZED);
298 return 0;
299 }
300
301 return BN_from_montgomery(r, a, group->field_data1, ctx);
302 }
303
304
305int ec_GFp_mont_field_set_to_one(const EC_GROUP *group, BIGNUM *r, BN_CTX *ctx)
306 {
307 if (group->field_data2 == NULL)
308 {
309 ECerr(EC_F_EC_GFP_MONT_FIELD_SET_TO_ONE, EC_R_NOT_INITIALIZED);
310 return 0;
311 }
312
313 if (!BN_copy(r, group->field_data2)) return 0;
314 return 1;
315 }
generated by cgit v1.2.3-55-g6feb (git 2.39.1) at 2025-03-21 15:30:26 +0000