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Commit | Line | Data |
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7e31164a | 1 | /* |
48e5119a | 2 | * Copyright 2002-2018 The OpenSSL Project Authors. All Rights Reserved. |
012c86ab | 3 | * |
a7f182b7 | 4 | * Licensed under the Apache License 2.0 (the "License"). You may not use |
aa6bb135 RS |
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 | |
012c86ab BM |
8 | */ |
9 | ||
5454829a | 10 | #include <string.h> |
706457b7 | 11 | #include "ec_local.h" |
0bee0e62 | 12 | #include <openssl/err.h> |
012c86ab BM |
13 | #include <openssl/asn1t.h> |
14 | #include <openssl/objects.h> | |
677963e5 | 15 | #include "internal/nelem.h" |
25f2138b | 16 | #include "crypto/asn1_dsa.h" |
012c86ab | 17 | |
a9612d6c MC |
18 | #ifndef FIPS_MODE |
19 | ||
34f1f2a8 | 20 | int EC_GROUP_get_basis_type(const EC_GROUP *group) |
0f113f3e | 21 | { |
57f48f93 | 22 | int i; |
0f113f3e MC |
23 | |
24 | if (EC_METHOD_get_field_type(EC_GROUP_method_of(group)) != | |
25 | NID_X9_62_characteristic_two_field) | |
26 | /* everything else is currently not supported */ | |
27 | return 0; | |
28 | ||
57f48f93 RS |
29 | /* Find the last non-zero element of group->poly[] */ |
30 | for (i = 0; | |
50799f35 | 31 | i < (int)OSSL_NELEM(group->poly) && group->poly[i] != 0; |
57f48f93 RS |
32 | i++) |
33 | continue; | |
0f113f3e MC |
34 | |
35 | if (i == 4) | |
36 | return NID_X9_62_ppBasis; | |
37 | else if (i == 2) | |
38 | return NID_X9_62_tpBasis; | |
39 | else | |
40 | /* everything else is currently not supported */ | |
41 | return 0; | |
42 | } | |
43 | ||
b3310161 | 44 | #ifndef OPENSSL_NO_EC2M |
34f1f2a8 | 45 | int EC_GROUP_get_trinomial_basis(const EC_GROUP *group, unsigned int *k) |
0f113f3e MC |
46 | { |
47 | if (group == NULL) | |
48 | return 0; | |
49 | ||
50 | if (EC_METHOD_get_field_type(EC_GROUP_method_of(group)) != | |
51 | NID_X9_62_characteristic_two_field | |
52 | || !((group->poly[0] != 0) && (group->poly[1] != 0) | |
53 | && (group->poly[2] == 0))) { | |
54 | ECerr(EC_F_EC_GROUP_GET_TRINOMIAL_BASIS, | |
55 | ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
56 | return 0; | |
57 | } | |
58 | ||
59 | if (k) | |
60 | *k = group->poly[1]; | |
61 | ||
62 | return 1; | |
63 | } | |
64 | ||
34f1f2a8 | 65 | int EC_GROUP_get_pentanomial_basis(const EC_GROUP *group, unsigned int *k1, |
0f113f3e MC |
66 | unsigned int *k2, unsigned int *k3) |
67 | { | |
68 | if (group == NULL) | |
69 | return 0; | |
70 | ||
71 | if (EC_METHOD_get_field_type(EC_GROUP_method_of(group)) != | |
72 | NID_X9_62_characteristic_two_field | |
73 | || !((group->poly[0] != 0) && (group->poly[1] != 0) | |
74 | && (group->poly[2] != 0) && (group->poly[3] != 0) | |
75 | && (group->poly[4] == 0))) { | |
76 | ECerr(EC_F_EC_GROUP_GET_PENTANOMIAL_BASIS, | |
77 | ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
78 | return 0; | |
79 | } | |
80 | ||
81 | if (k1) | |
82 | *k1 = group->poly[3]; | |
83 | if (k2) | |
84 | *k2 = group->poly[2]; | |
85 | if (k3) | |
86 | *k3 = group->poly[1]; | |
87 | ||
88 | return 1; | |
89 | } | |
b3310161 | 90 | #endif |
8aefe253 | 91 | |
012c86ab | 92 | /* some structures needed for the asn1 encoding */ |
012c86ab | 93 | typedef struct x9_62_pentanomial_st { |
6a32a3c0 RL |
94 | int32_t k1; |
95 | int32_t k2; | |
96 | int32_t k3; | |
0f113f3e | 97 | } X9_62_PENTANOMIAL; |
012c86ab | 98 | |
37af03d3 | 99 | typedef struct x9_62_characteristic_two_st { |
6a32a3c0 | 100 | int32_t m; |
0f113f3e MC |
101 | ASN1_OBJECT *type; |
102 | union { | |
103 | char *ptr; | |
104 | /* NID_X9_62_onBasis */ | |
105 | ASN1_NULL *onBasis; | |
106 | /* NID_X9_62_tpBasis */ | |
107 | ASN1_INTEGER *tpBasis; | |
108 | /* NID_X9_62_ppBasis */ | |
109 | X9_62_PENTANOMIAL *ppBasis; | |
110 | /* anything else */ | |
111 | ASN1_TYPE *other; | |
112 | } p; | |
113 | } X9_62_CHARACTERISTIC_TWO; | |
37af03d3 GT |
114 | |
115 | typedef struct x9_62_fieldid_st { | |
0f113f3e MC |
116 | ASN1_OBJECT *fieldType; |
117 | union { | |
118 | char *ptr; | |
119 | /* NID_X9_62_prime_field */ | |
120 | ASN1_INTEGER *prime; | |
121 | /* NID_X9_62_characteristic_two_field */ | |
122 | X9_62_CHARACTERISTIC_TWO *char_two; | |
123 | /* anything else */ | |
124 | ASN1_TYPE *other; | |
125 | } p; | |
126 | } X9_62_FIELDID; | |
37af03d3 | 127 | |
012c86ab | 128 | typedef struct x9_62_curve_st { |
0f113f3e MC |
129 | ASN1_OCTET_STRING *a; |
130 | ASN1_OCTET_STRING *b; | |
131 | ASN1_BIT_STRING *seed; | |
132 | } X9_62_CURVE; | |
012c86ab | 133 | |
03f880e4 | 134 | struct ec_parameters_st { |
6a32a3c0 | 135 | int32_t version; |
0f113f3e MC |
136 | X9_62_FIELDID *fieldID; |
137 | X9_62_CURVE *curve; | |
138 | ASN1_OCTET_STRING *base; | |
139 | ASN1_INTEGER *order; | |
140 | ASN1_INTEGER *cofactor; | |
03f880e4 | 141 | } /* ECPARAMETERS */ ; |
012c86ab BM |
142 | |
143 | struct ecpk_parameters_st { | |
0f113f3e MC |
144 | int type; |
145 | union { | |
146 | ASN1_OBJECT *named_curve; | |
147 | ECPARAMETERS *parameters; | |
148 | ASN1_NULL *implicitlyCA; | |
149 | } value; | |
150 | } /* ECPKPARAMETERS */ ; | |
012c86ab | 151 | |
14a7cfb3 BM |
152 | /* SEC1 ECPrivateKey */ |
153 | typedef struct ec_privatekey_st { | |
6a32a3c0 | 154 | int32_t version; |
0f113f3e MC |
155 | ASN1_OCTET_STRING *privateKey; |
156 | ECPKPARAMETERS *parameters; | |
157 | ASN1_BIT_STRING *publicKey; | |
158 | } EC_PRIVATEKEY; | |
14a7cfb3 | 159 | |
37af03d3 GT |
160 | /* the OpenSSL ASN.1 definitions */ |
161 | ASN1_SEQUENCE(X9_62_PENTANOMIAL) = { | |
9612e157 RL |
162 | ASN1_EMBED(X9_62_PENTANOMIAL, k1, INT32), |
163 | ASN1_EMBED(X9_62_PENTANOMIAL, k2, INT32), | |
164 | ASN1_EMBED(X9_62_PENTANOMIAL, k3, INT32) | |
df2ee0e2 | 165 | } static_ASN1_SEQUENCE_END(X9_62_PENTANOMIAL) |
012c86ab | 166 | |
37af03d3 GT |
167 | DECLARE_ASN1_ALLOC_FUNCTIONS(X9_62_PENTANOMIAL) |
168 | IMPLEMENT_ASN1_ALLOC_FUNCTIONS(X9_62_PENTANOMIAL) | |
169 | ||
170 | ASN1_ADB_TEMPLATE(char_two_def) = ASN1_SIMPLE(X9_62_CHARACTERISTIC_TWO, p.other, ASN1_ANY); | |
012c86ab | 171 | |
37af03d3 | 172 | ASN1_ADB(X9_62_CHARACTERISTIC_TWO) = { |
0f113f3e MC |
173 | ADB_ENTRY(NID_X9_62_onBasis, ASN1_SIMPLE(X9_62_CHARACTERISTIC_TWO, p.onBasis, ASN1_NULL)), |
174 | ADB_ENTRY(NID_X9_62_tpBasis, ASN1_SIMPLE(X9_62_CHARACTERISTIC_TWO, p.tpBasis, ASN1_INTEGER)), | |
175 | ADB_ENTRY(NID_X9_62_ppBasis, ASN1_SIMPLE(X9_62_CHARACTERISTIC_TWO, p.ppBasis, X9_62_PENTANOMIAL)) | |
37af03d3 | 176 | } ASN1_ADB_END(X9_62_CHARACTERISTIC_TWO, 0, type, 0, &char_two_def_tt, NULL); |
012c86ab BM |
177 | |
178 | ASN1_SEQUENCE(X9_62_CHARACTERISTIC_TWO) = { | |
9612e157 | 179 | ASN1_EMBED(X9_62_CHARACTERISTIC_TWO, m, INT32), |
0f113f3e MC |
180 | ASN1_SIMPLE(X9_62_CHARACTERISTIC_TWO, type, ASN1_OBJECT), |
181 | ASN1_ADB_OBJECT(X9_62_CHARACTERISTIC_TWO) | |
df2ee0e2 | 182 | } static_ASN1_SEQUENCE_END(X9_62_CHARACTERISTIC_TWO) |
012c86ab | 183 | |
37af03d3 GT |
184 | DECLARE_ASN1_ALLOC_FUNCTIONS(X9_62_CHARACTERISTIC_TWO) |
185 | IMPLEMENT_ASN1_ALLOC_FUNCTIONS(X9_62_CHARACTERISTIC_TWO) | |
012c86ab | 186 | |
37af03d3 GT |
187 | ASN1_ADB_TEMPLATE(fieldID_def) = ASN1_SIMPLE(X9_62_FIELDID, p.other, ASN1_ANY); |
188 | ||
189 | ASN1_ADB(X9_62_FIELDID) = { | |
0f113f3e MC |
190 | ADB_ENTRY(NID_X9_62_prime_field, ASN1_SIMPLE(X9_62_FIELDID, p.prime, ASN1_INTEGER)), |
191 | ADB_ENTRY(NID_X9_62_characteristic_two_field, ASN1_SIMPLE(X9_62_FIELDID, p.char_two, X9_62_CHARACTERISTIC_TWO)) | |
37af03d3 | 192 | } ASN1_ADB_END(X9_62_FIELDID, 0, fieldType, 0, &fieldID_def_tt, NULL); |
012c86ab | 193 | |
37af03d3 | 194 | ASN1_SEQUENCE(X9_62_FIELDID) = { |
0f113f3e MC |
195 | ASN1_SIMPLE(X9_62_FIELDID, fieldType, ASN1_OBJECT), |
196 | ASN1_ADB_OBJECT(X9_62_FIELDID) | |
df2ee0e2 | 197 | } static_ASN1_SEQUENCE_END(X9_62_FIELDID) |
012c86ab BM |
198 | |
199 | ASN1_SEQUENCE(X9_62_CURVE) = { | |
0f113f3e MC |
200 | ASN1_SIMPLE(X9_62_CURVE, a, ASN1_OCTET_STRING), |
201 | ASN1_SIMPLE(X9_62_CURVE, b, ASN1_OCTET_STRING), | |
202 | ASN1_OPT(X9_62_CURVE, seed, ASN1_BIT_STRING) | |
df2ee0e2 | 203 | } static_ASN1_SEQUENCE_END(X9_62_CURVE) |
012c86ab | 204 | |
012c86ab | 205 | ASN1_SEQUENCE(ECPARAMETERS) = { |
9612e157 | 206 | ASN1_EMBED(ECPARAMETERS, version, INT32), |
0f113f3e MC |
207 | ASN1_SIMPLE(ECPARAMETERS, fieldID, X9_62_FIELDID), |
208 | ASN1_SIMPLE(ECPARAMETERS, curve, X9_62_CURVE), | |
209 | ASN1_SIMPLE(ECPARAMETERS, base, ASN1_OCTET_STRING), | |
210 | ASN1_SIMPLE(ECPARAMETERS, order, ASN1_INTEGER), | |
211 | ASN1_OPT(ECPARAMETERS, cofactor, ASN1_INTEGER) | |
60b350a3 | 212 | } ASN1_SEQUENCE_END(ECPARAMETERS) |
012c86ab | 213 | |
37af03d3 GT |
214 | DECLARE_ASN1_ALLOC_FUNCTIONS(ECPARAMETERS) |
215 | IMPLEMENT_ASN1_ALLOC_FUNCTIONS(ECPARAMETERS) | |
012c86ab BM |
216 | |
217 | ASN1_CHOICE(ECPKPARAMETERS) = { | |
0f113f3e MC |
218 | ASN1_SIMPLE(ECPKPARAMETERS, value.named_curve, ASN1_OBJECT), |
219 | ASN1_SIMPLE(ECPKPARAMETERS, value.parameters, ECPARAMETERS), | |
220 | ASN1_SIMPLE(ECPKPARAMETERS, value.implicitlyCA, ASN1_NULL) | |
60b350a3 | 221 | } ASN1_CHOICE_END(ECPKPARAMETERS) |
012c86ab | 222 | |
9fdcc21f DO |
223 | DECLARE_ASN1_FUNCTIONS(ECPKPARAMETERS) |
224 | DECLARE_ASN1_ENCODE_FUNCTIONS_name(ECPKPARAMETERS, ECPKPARAMETERS) | |
225 | IMPLEMENT_ASN1_FUNCTIONS(ECPKPARAMETERS) | |
012c86ab | 226 | |
0bee0e62 | 227 | ASN1_SEQUENCE(EC_PRIVATEKEY) = { |
9612e157 | 228 | ASN1_EMBED(EC_PRIVATEKEY, version, INT32), |
0f113f3e MC |
229 | ASN1_SIMPLE(EC_PRIVATEKEY, privateKey, ASN1_OCTET_STRING), |
230 | ASN1_EXP_OPT(EC_PRIVATEKEY, parameters, ECPKPARAMETERS, 0), | |
231 | ASN1_EXP_OPT(EC_PRIVATEKEY, publicKey, ASN1_BIT_STRING, 1) | |
df2ee0e2 | 232 | } static_ASN1_SEQUENCE_END(EC_PRIVATEKEY) |
0bee0e62 | 233 | |
9fdcc21f DO |
234 | DECLARE_ASN1_FUNCTIONS(EC_PRIVATEKEY) |
235 | DECLARE_ASN1_ENCODE_FUNCTIONS_name(EC_PRIVATEKEY, EC_PRIVATEKEY) | |
236 | IMPLEMENT_ASN1_FUNCTIONS(EC_PRIVATEKEY) | |
0bee0e62 | 237 | |
7e31164a | 238 | /* some declarations of internal function */ |
012c86ab | 239 | |
0f113f3e | 240 | /* ec_asn1_group2field() sets the values in a X9_62_FIELDID object */ |
37af03d3 | 241 | static int ec_asn1_group2fieldid(const EC_GROUP *, X9_62_FIELDID *); |
0f113f3e | 242 | /* ec_asn1_group2curve() sets the values in a X9_62_CURVE object */ |
37af03d3 | 243 | static int ec_asn1_group2curve(const EC_GROUP *, X9_62_CURVE *); |
7e31164a BM |
244 | |
245 | /* the function definitions */ | |
012c86ab | 246 | |
37af03d3 | 247 | static int ec_asn1_group2fieldid(const EC_GROUP *group, X9_62_FIELDID *field) |
0f113f3e MC |
248 | { |
249 | int ok = 0, nid; | |
250 | BIGNUM *tmp = NULL; | |
251 | ||
252 | if (group == NULL || field == NULL) | |
253 | return 0; | |
254 | ||
255 | /* clear the old values (if necessary) */ | |
0dfb9398 | 256 | ASN1_OBJECT_free(field->fieldType); |
2ace7450 | 257 | ASN1_TYPE_free(field->p.other); |
0f113f3e MC |
258 | |
259 | nid = EC_METHOD_get_field_type(EC_GROUP_method_of(group)); | |
260 | /* set OID for the field */ | |
261 | if ((field->fieldType = OBJ_nid2obj(nid)) == NULL) { | |
262 | ECerr(EC_F_EC_ASN1_GROUP2FIELDID, ERR_R_OBJ_LIB); | |
263 | goto err; | |
264 | } | |
265 | ||
266 | if (nid == NID_X9_62_prime_field) { | |
267 | if ((tmp = BN_new()) == NULL) { | |
268 | ECerr(EC_F_EC_ASN1_GROUP2FIELDID, ERR_R_MALLOC_FAILURE); | |
269 | goto err; | |
270 | } | |
271 | /* the parameters are specified by the prime number p */ | |
9cc570d4 | 272 | if (!EC_GROUP_get_curve(group, tmp, NULL, NULL, NULL)) { |
0f113f3e MC |
273 | ECerr(EC_F_EC_ASN1_GROUP2FIELDID, ERR_R_EC_LIB); |
274 | goto err; | |
275 | } | |
276 | /* set the prime number */ | |
277 | field->p.prime = BN_to_ASN1_INTEGER(tmp, NULL); | |
278 | if (field->p.prime == NULL) { | |
279 | ECerr(EC_F_EC_ASN1_GROUP2FIELDID, ERR_R_ASN1_LIB); | |
280 | goto err; | |
281 | } | |
6903e2e7 | 282 | } else if (nid == NID_X9_62_characteristic_two_field) |
b3310161 | 283 | #ifdef OPENSSL_NO_EC2M |
0f113f3e MC |
284 | { |
285 | ECerr(EC_F_EC_ASN1_GROUP2FIELDID, EC_R_GF2M_NOT_SUPPORTED); | |
286 | goto err; | |
287 | } | |
b3310161 | 288 | #else |
0f113f3e MC |
289 | { |
290 | int field_type; | |
291 | X9_62_CHARACTERISTIC_TWO *char_two; | |
292 | ||
293 | field->p.char_two = X9_62_CHARACTERISTIC_TWO_new(); | |
294 | char_two = field->p.char_two; | |
295 | ||
296 | if (char_two == NULL) { | |
297 | ECerr(EC_F_EC_ASN1_GROUP2FIELDID, ERR_R_MALLOC_FAILURE); | |
298 | goto err; | |
299 | } | |
300 | ||
301 | char_two->m = (long)EC_GROUP_get_degree(group); | |
302 | ||
303 | field_type = EC_GROUP_get_basis_type(group); | |
304 | ||
305 | if (field_type == 0) { | |
306 | ECerr(EC_F_EC_ASN1_GROUP2FIELDID, ERR_R_EC_LIB); | |
307 | goto err; | |
308 | } | |
309 | /* set base type OID */ | |
310 | if ((char_two->type = OBJ_nid2obj(field_type)) == NULL) { | |
311 | ECerr(EC_F_EC_ASN1_GROUP2FIELDID, ERR_R_OBJ_LIB); | |
312 | goto err; | |
313 | } | |
314 | ||
315 | if (field_type == NID_X9_62_tpBasis) { | |
316 | unsigned int k; | |
317 | ||
318 | if (!EC_GROUP_get_trinomial_basis(group, &k)) | |
319 | goto err; | |
320 | ||
321 | char_two->p.tpBasis = ASN1_INTEGER_new(); | |
90945fa3 | 322 | if (char_two->p.tpBasis == NULL) { |
0f113f3e MC |
323 | ECerr(EC_F_EC_ASN1_GROUP2FIELDID, ERR_R_MALLOC_FAILURE); |
324 | goto err; | |
325 | } | |
326 | if (!ASN1_INTEGER_set(char_two->p.tpBasis, (long)k)) { | |
327 | ECerr(EC_F_EC_ASN1_GROUP2FIELDID, ERR_R_ASN1_LIB); | |
328 | goto err; | |
329 | } | |
330 | } else if (field_type == NID_X9_62_ppBasis) { | |
331 | unsigned int k1, k2, k3; | |
332 | ||
333 | if (!EC_GROUP_get_pentanomial_basis(group, &k1, &k2, &k3)) | |
334 | goto err; | |
335 | ||
336 | char_two->p.ppBasis = X9_62_PENTANOMIAL_new(); | |
90945fa3 | 337 | if (char_two->p.ppBasis == NULL) { |
0f113f3e MC |
338 | ECerr(EC_F_EC_ASN1_GROUP2FIELDID, ERR_R_MALLOC_FAILURE); |
339 | goto err; | |
340 | } | |
341 | ||
342 | /* set k? values */ | |
343 | char_two->p.ppBasis->k1 = (long)k1; | |
344 | char_two->p.ppBasis->k2 = (long)k2; | |
345 | char_two->p.ppBasis->k3 = (long)k3; | |
346 | } else { /* field_type == NID_X9_62_onBasis */ | |
347 | ||
348 | /* for ONB the parameters are (asn1) NULL */ | |
349 | char_two->p.onBasis = ASN1_NULL_new(); | |
90945fa3 | 350 | if (char_two->p.onBasis == NULL) { |
0f113f3e MC |
351 | ECerr(EC_F_EC_ASN1_GROUP2FIELDID, ERR_R_MALLOC_FAILURE); |
352 | goto err; | |
353 | } | |
354 | } | |
355 | } | |
b3310161 | 356 | #endif |
6903e2e7 DSH |
357 | else { |
358 | ECerr(EC_F_EC_ASN1_GROUP2FIELDID, EC_R_UNSUPPORTED_FIELD); | |
359 | goto err; | |
360 | } | |
012c86ab | 361 | |
0f113f3e | 362 | ok = 1; |
012c86ab | 363 | |
23a1d5e9 RS |
364 | err: |
365 | BN_free(tmp); | |
26a7d938 | 366 | return ok; |
012c86ab BM |
367 | } |
368 | ||
37af03d3 | 369 | static int ec_asn1_group2curve(const EC_GROUP *group, X9_62_CURVE *curve) |
0f113f3e | 370 | { |
9cc570d4 | 371 | int ok = 0; |
0f113f3e | 372 | BIGNUM *tmp_1 = NULL, *tmp_2 = NULL; |
fc6f579a DB |
373 | unsigned char *a_buf = NULL, *b_buf = NULL; |
374 | size_t len; | |
0f113f3e MC |
375 | |
376 | if (!group || !curve || !curve->a || !curve->b) | |
377 | return 0; | |
378 | ||
379 | if ((tmp_1 = BN_new()) == NULL || (tmp_2 = BN_new()) == NULL) { | |
380 | ECerr(EC_F_EC_ASN1_GROUP2CURVE, ERR_R_MALLOC_FAILURE); | |
381 | goto err; | |
382 | } | |
383 | ||
0f113f3e | 384 | /* get a and b */ |
9cc570d4 MC |
385 | if (!EC_GROUP_get_curve(group, NULL, tmp_1, tmp_2, NULL)) { |
386 | ECerr(EC_F_EC_ASN1_GROUP2CURVE, ERR_R_EC_LIB); | |
387 | goto err; | |
0f113f3e | 388 | } |
0f113f3e | 389 | |
fc6f579a DB |
390 | /* |
391 | * Per SEC 1, the curve coefficients must be padded up to size. See C.2's | |
392 | * definition of Curve, C.1's definition of FieldElement, and 2.3.5's | |
393 | * definition of how to encode the field elements. | |
394 | */ | |
395 | len = ((size_t)EC_GROUP_get_degree(group) + 7) / 8; | |
396 | if ((a_buf = OPENSSL_malloc(len)) == NULL | |
397 | || (b_buf = OPENSSL_malloc(len)) == NULL) { | |
398 | ECerr(EC_F_EC_ASN1_GROUP2CURVE, ERR_R_MALLOC_FAILURE); | |
399 | goto err; | |
0f113f3e | 400 | } |
fc6f579a DB |
401 | if (BN_bn2binpad(tmp_1, a_buf, len) < 0 |
402 | || BN_bn2binpad(tmp_2, b_buf, len) < 0) { | |
403 | ECerr(EC_F_EC_ASN1_GROUP2CURVE, ERR_R_BN_LIB); | |
404 | goto err; | |
0f113f3e MC |
405 | } |
406 | ||
407 | /* set a and b */ | |
fc6f579a DB |
408 | if (!ASN1_OCTET_STRING_set(curve->a, a_buf, len) |
409 | || !ASN1_OCTET_STRING_set(curve->b, b_buf, len)) { | |
0f113f3e MC |
410 | ECerr(EC_F_EC_ASN1_GROUP2CURVE, ERR_R_ASN1_LIB); |
411 | goto err; | |
412 | } | |
413 | ||
414 | /* set the seed (optional) */ | |
415 | if (group->seed) { | |
416 | if (!curve->seed) | |
417 | if ((curve->seed = ASN1_BIT_STRING_new()) == NULL) { | |
418 | ECerr(EC_F_EC_ASN1_GROUP2CURVE, ERR_R_MALLOC_FAILURE); | |
419 | goto err; | |
420 | } | |
421 | curve->seed->flags &= ~(ASN1_STRING_FLAG_BITS_LEFT | 0x07); | |
422 | curve->seed->flags |= ASN1_STRING_FLAG_BITS_LEFT; | |
423 | if (!ASN1_BIT_STRING_set(curve->seed, group->seed, | |
424 | (int)group->seed_len)) { | |
425 | ECerr(EC_F_EC_ASN1_GROUP2CURVE, ERR_R_ASN1_LIB); | |
426 | goto err; | |
427 | } | |
428 | } else { | |
2ace7450 RS |
429 | ASN1_BIT_STRING_free(curve->seed); |
430 | curve->seed = NULL; | |
0f113f3e MC |
431 | } |
432 | ||
433 | ok = 1; | |
434 | ||
23a1d5e9 | 435 | err: |
fc6f579a DB |
436 | OPENSSL_free(a_buf); |
437 | OPENSSL_free(b_buf); | |
23a1d5e9 RS |
438 | BN_free(tmp_1); |
439 | BN_free(tmp_2); | |
26a7d938 | 440 | return ok; |
0f113f3e | 441 | } |
012c86ab | 442 | |
60b350a3 RS |
443 | ECPARAMETERS *EC_GROUP_get_ecparameters(const EC_GROUP *group, |
444 | ECPARAMETERS *params) | |
0f113f3e | 445 | { |
0f113f3e MC |
446 | size_t len = 0; |
447 | ECPARAMETERS *ret = NULL; | |
be2e334f | 448 | const BIGNUM *tmp; |
0f113f3e MC |
449 | unsigned char *buffer = NULL; |
450 | const EC_POINT *point = NULL; | |
451 | point_conversion_form_t form; | |
f28bc7d3 | 452 | ASN1_INTEGER *orig; |
0f113f3e | 453 | |
60b350a3 | 454 | if (params == NULL) { |
0f113f3e | 455 | if ((ret = ECPARAMETERS_new()) == NULL) { |
60b350a3 | 456 | ECerr(EC_F_EC_GROUP_GET_ECPARAMETERS, ERR_R_MALLOC_FAILURE); |
0f113f3e MC |
457 | goto err; |
458 | } | |
459 | } else | |
60b350a3 | 460 | ret = params; |
0f113f3e MC |
461 | |
462 | /* set the version (always one) */ | |
463 | ret->version = (long)0x1; | |
464 | ||
465 | /* set the fieldID */ | |
466 | if (!ec_asn1_group2fieldid(group, ret->fieldID)) { | |
60b350a3 | 467 | ECerr(EC_F_EC_GROUP_GET_ECPARAMETERS, ERR_R_EC_LIB); |
0f113f3e MC |
468 | goto err; |
469 | } | |
470 | ||
471 | /* set the curve */ | |
472 | if (!ec_asn1_group2curve(group, ret->curve)) { | |
60b350a3 | 473 | ECerr(EC_F_EC_GROUP_GET_ECPARAMETERS, ERR_R_EC_LIB); |
0f113f3e MC |
474 | goto err; |
475 | } | |
476 | ||
477 | /* set the base point */ | |
478 | if ((point = EC_GROUP_get0_generator(group)) == NULL) { | |
60b350a3 | 479 | ECerr(EC_F_EC_GROUP_GET_ECPARAMETERS, EC_R_UNDEFINED_GENERATOR); |
0f113f3e MC |
480 | goto err; |
481 | } | |
482 | ||
483 | form = EC_GROUP_get_point_conversion_form(group); | |
484 | ||
981bd8a2 | 485 | len = EC_POINT_point2buf(group, point, form, &buffer, NULL); |
0f113f3e | 486 | if (len == 0) { |
60b350a3 | 487 | ECerr(EC_F_EC_GROUP_GET_ECPARAMETERS, ERR_R_EC_LIB); |
0f113f3e MC |
488 | goto err; |
489 | } | |
0f113f3e | 490 | if (ret->base == NULL && (ret->base = ASN1_OCTET_STRING_new()) == NULL) { |
0110a470 | 491 | OPENSSL_free(buffer); |
60b350a3 | 492 | ECerr(EC_F_EC_GROUP_GET_ECPARAMETERS, ERR_R_MALLOC_FAILURE); |
0f113f3e MC |
493 | goto err; |
494 | } | |
0110a470 | 495 | ASN1_STRING_set0(ret->base, buffer, len); |
0f113f3e MC |
496 | |
497 | /* set the order */ | |
be2e334f DSH |
498 | tmp = EC_GROUP_get0_order(group); |
499 | if (tmp == NULL) { | |
60b350a3 | 500 | ECerr(EC_F_EC_GROUP_GET_ECPARAMETERS, ERR_R_EC_LIB); |
0f113f3e MC |
501 | goto err; |
502 | } | |
f28bc7d3 | 503 | ret->order = BN_to_ASN1_INTEGER(tmp, orig = ret->order); |
0f113f3e | 504 | if (ret->order == NULL) { |
f28bc7d3 | 505 | ret->order = orig; |
60b350a3 | 506 | ECerr(EC_F_EC_GROUP_GET_ECPARAMETERS, ERR_R_ASN1_LIB); |
0f113f3e MC |
507 | goto err; |
508 | } | |
509 | ||
510 | /* set the cofactor (optional) */ | |
be2e334f DSH |
511 | tmp = EC_GROUP_get0_cofactor(group); |
512 | if (tmp != NULL) { | |
f28bc7d3 | 513 | ret->cofactor = BN_to_ASN1_INTEGER(tmp, orig = ret->cofactor); |
0f113f3e | 514 | if (ret->cofactor == NULL) { |
f28bc7d3 | 515 | ret->cofactor = orig; |
60b350a3 | 516 | ECerr(EC_F_EC_GROUP_GET_ECPARAMETERS, ERR_R_ASN1_LIB); |
0f113f3e MC |
517 | goto err; |
518 | } | |
519 | } | |
520 | ||
23a1d5e9 | 521 | return ret; |
0f113f3e | 522 | |
23a1d5e9 | 523 | err: |
60b350a3 | 524 | if (params == NULL) |
23a1d5e9 | 525 | ECPARAMETERS_free(ret); |
23a1d5e9 | 526 | return NULL; |
0f113f3e MC |
527 | } |
528 | ||
60b350a3 RS |
529 | ECPKPARAMETERS *EC_GROUP_get_ecpkparameters(const EC_GROUP *group, |
530 | ECPKPARAMETERS *params) | |
0f113f3e MC |
531 | { |
532 | int ok = 1, tmp; | |
533 | ECPKPARAMETERS *ret = params; | |
534 | ||
535 | if (ret == NULL) { | |
536 | if ((ret = ECPKPARAMETERS_new()) == NULL) { | |
60b350a3 | 537 | ECerr(EC_F_EC_GROUP_GET_ECPKPARAMETERS, ERR_R_MALLOC_FAILURE); |
0f113f3e MC |
538 | return NULL; |
539 | } | |
540 | } else { | |
0dfb9398 | 541 | if (ret->type == 0) |
0f113f3e MC |
542 | ASN1_OBJECT_free(ret->value.named_curve); |
543 | else if (ret->type == 1 && ret->value.parameters) | |
544 | ECPARAMETERS_free(ret->value.parameters); | |
545 | } | |
546 | ||
547 | if (EC_GROUP_get_asn1_flag(group)) { | |
548 | /* | |
436ad81f | 549 | * use the asn1 OID to describe the elliptic curve parameters |
0f113f3e MC |
550 | */ |
551 | tmp = EC_GROUP_get_curve_name(group); | |
552 | if (tmp) { | |
553 | ret->type = 0; | |
554 | if ((ret->value.named_curve = OBJ_nid2obj(tmp)) == NULL) | |
555 | ok = 0; | |
556 | } else | |
0d4fb843 | 557 | /* we don't know the nid => ERROR */ |
0f113f3e MC |
558 | ok = 0; |
559 | } else { | |
560 | /* use the ECPARAMETERS structure */ | |
561 | ret->type = 1; | |
562 | if ((ret->value.parameters = | |
60b350a3 | 563 | EC_GROUP_get_ecparameters(group, NULL)) == NULL) |
0f113f3e MC |
564 | ok = 0; |
565 | } | |
566 | ||
567 | if (!ok) { | |
568 | ECPKPARAMETERS_free(ret); | |
569 | return NULL; | |
570 | } | |
571 | return ret; | |
572 | } | |
012c86ab | 573 | |
60b350a3 | 574 | EC_GROUP *EC_GROUP_new_from_ecparameters(const ECPARAMETERS *params) |
0f113f3e MC |
575 | { |
576 | int ok = 0, tmp; | |
bacaa618 | 577 | EC_GROUP *ret = NULL, *dup = NULL; |
0f113f3e MC |
578 | BIGNUM *p = NULL, *a = NULL, *b = NULL; |
579 | EC_POINT *point = NULL; | |
580 | long field_bits; | |
bacaa618 NT |
581 | int curve_name = NID_undef; |
582 | BN_CTX *ctx = NULL; | |
0f113f3e MC |
583 | |
584 | if (!params->fieldID || !params->fieldID->fieldType || | |
585 | !params->fieldID->p.ptr) { | |
60b350a3 | 586 | ECerr(EC_F_EC_GROUP_NEW_FROM_ECPARAMETERS, EC_R_ASN1_ERROR); |
0f113f3e MC |
587 | goto err; |
588 | } | |
589 | ||
fc6f579a DB |
590 | /* |
591 | * Now extract the curve parameters a and b. Note that, although SEC 1 | |
592 | * specifies the length of their encodings, historical versions of OpenSSL | |
593 | * encoded them incorrectly, so we must accept any length for backwards | |
594 | * compatibility. | |
595 | */ | |
0f113f3e MC |
596 | if (!params->curve || !params->curve->a || |
597 | !params->curve->a->data || !params->curve->b || | |
598 | !params->curve->b->data) { | |
60b350a3 | 599 | ECerr(EC_F_EC_GROUP_NEW_FROM_ECPARAMETERS, EC_R_ASN1_ERROR); |
0f113f3e MC |
600 | goto err; |
601 | } | |
602 | a = BN_bin2bn(params->curve->a->data, params->curve->a->length, NULL); | |
603 | if (a == NULL) { | |
60b350a3 | 604 | ECerr(EC_F_EC_GROUP_NEW_FROM_ECPARAMETERS, ERR_R_BN_LIB); |
0f113f3e MC |
605 | goto err; |
606 | } | |
607 | b = BN_bin2bn(params->curve->b->data, params->curve->b->length, NULL); | |
608 | if (b == NULL) { | |
60b350a3 | 609 | ECerr(EC_F_EC_GROUP_NEW_FROM_ECPARAMETERS, ERR_R_BN_LIB); |
0f113f3e MC |
610 | goto err; |
611 | } | |
612 | ||
613 | /* get the field parameters */ | |
614 | tmp = OBJ_obj2nid(params->fieldID->fieldType); | |
615 | if (tmp == NID_X9_62_characteristic_two_field) | |
b3310161 | 616 | #ifdef OPENSSL_NO_EC2M |
0f113f3e | 617 | { |
60b350a3 | 618 | ECerr(EC_F_EC_GROUP_NEW_FROM_ECPARAMETERS, EC_R_GF2M_NOT_SUPPORTED); |
0f113f3e MC |
619 | goto err; |
620 | } | |
b3310161 | 621 | #else |
0f113f3e MC |
622 | { |
623 | X9_62_CHARACTERISTIC_TWO *char_two; | |
624 | ||
625 | char_two = params->fieldID->p.char_two; | |
626 | ||
627 | field_bits = char_two->m; | |
628 | if (field_bits > OPENSSL_ECC_MAX_FIELD_BITS) { | |
60b350a3 | 629 | ECerr(EC_F_EC_GROUP_NEW_FROM_ECPARAMETERS, EC_R_FIELD_TOO_LARGE); |
0f113f3e MC |
630 | goto err; |
631 | } | |
632 | ||
633 | if ((p = BN_new()) == NULL) { | |
60b350a3 | 634 | ECerr(EC_F_EC_GROUP_NEW_FROM_ECPARAMETERS, ERR_R_MALLOC_FAILURE); |
0f113f3e MC |
635 | goto err; |
636 | } | |
637 | ||
638 | /* get the base type */ | |
639 | tmp = OBJ_obj2nid(char_two->type); | |
640 | ||
641 | if (tmp == NID_X9_62_tpBasis) { | |
642 | long tmp_long; | |
643 | ||
644 | if (!char_two->p.tpBasis) { | |
60b350a3 | 645 | ECerr(EC_F_EC_GROUP_NEW_FROM_ECPARAMETERS, EC_R_ASN1_ERROR); |
0f113f3e MC |
646 | goto err; |
647 | } | |
648 | ||
649 | tmp_long = ASN1_INTEGER_get(char_two->p.tpBasis); | |
650 | ||
651 | if (!(char_two->m > tmp_long && tmp_long > 0)) { | |
60b350a3 | 652 | ECerr(EC_F_EC_GROUP_NEW_FROM_ECPARAMETERS, |
0f113f3e MC |
653 | EC_R_INVALID_TRINOMIAL_BASIS); |
654 | goto err; | |
655 | } | |
656 | ||
657 | /* create the polynomial */ | |
658 | if (!BN_set_bit(p, (int)char_two->m)) | |
659 | goto err; | |
660 | if (!BN_set_bit(p, (int)tmp_long)) | |
661 | goto err; | |
662 | if (!BN_set_bit(p, 0)) | |
663 | goto err; | |
664 | } else if (tmp == NID_X9_62_ppBasis) { | |
665 | X9_62_PENTANOMIAL *penta; | |
666 | ||
667 | penta = char_two->p.ppBasis; | |
668 | if (!penta) { | |
60b350a3 | 669 | ECerr(EC_F_EC_GROUP_NEW_FROM_ECPARAMETERS, EC_R_ASN1_ERROR); |
0f113f3e MC |
670 | goto err; |
671 | } | |
672 | ||
673 | if (! | |
674 | (char_two->m > penta->k3 && penta->k3 > penta->k2 | |
675 | && penta->k2 > penta->k1 && penta->k1 > 0)) { | |
60b350a3 | 676 | ECerr(EC_F_EC_GROUP_NEW_FROM_ECPARAMETERS, |
0f113f3e MC |
677 | EC_R_INVALID_PENTANOMIAL_BASIS); |
678 | goto err; | |
679 | } | |
680 | ||
681 | /* create the polynomial */ | |
682 | if (!BN_set_bit(p, (int)char_two->m)) | |
683 | goto err; | |
684 | if (!BN_set_bit(p, (int)penta->k1)) | |
685 | goto err; | |
686 | if (!BN_set_bit(p, (int)penta->k2)) | |
687 | goto err; | |
688 | if (!BN_set_bit(p, (int)penta->k3)) | |
689 | goto err; | |
690 | if (!BN_set_bit(p, 0)) | |
691 | goto err; | |
692 | } else if (tmp == NID_X9_62_onBasis) { | |
60b350a3 | 693 | ECerr(EC_F_EC_GROUP_NEW_FROM_ECPARAMETERS, EC_R_NOT_IMPLEMENTED); |
0f113f3e MC |
694 | goto err; |
695 | } else { /* error */ | |
696 | ||
60b350a3 | 697 | ECerr(EC_F_EC_GROUP_NEW_FROM_ECPARAMETERS, EC_R_ASN1_ERROR); |
0f113f3e MC |
698 | goto err; |
699 | } | |
700 | ||
701 | /* create the EC_GROUP structure */ | |
702 | ret = EC_GROUP_new_curve_GF2m(p, a, b, NULL); | |
703 | } | |
b3310161 | 704 | #endif |
0f113f3e MC |
705 | else if (tmp == NID_X9_62_prime_field) { |
706 | /* we have a curve over a prime field */ | |
707 | /* extract the prime number */ | |
708 | if (!params->fieldID->p.prime) { | |
60b350a3 | 709 | ECerr(EC_F_EC_GROUP_NEW_FROM_ECPARAMETERS, EC_R_ASN1_ERROR); |
0f113f3e MC |
710 | goto err; |
711 | } | |
712 | p = ASN1_INTEGER_to_BN(params->fieldID->p.prime, NULL); | |
713 | if (p == NULL) { | |
60b350a3 | 714 | ECerr(EC_F_EC_GROUP_NEW_FROM_ECPARAMETERS, ERR_R_ASN1_LIB); |
0f113f3e MC |
715 | goto err; |
716 | } | |
717 | ||
718 | if (BN_is_negative(p) || BN_is_zero(p)) { | |
60b350a3 | 719 | ECerr(EC_F_EC_GROUP_NEW_FROM_ECPARAMETERS, EC_R_INVALID_FIELD); |
0f113f3e MC |
720 | goto err; |
721 | } | |
722 | ||
723 | field_bits = BN_num_bits(p); | |
724 | if (field_bits > OPENSSL_ECC_MAX_FIELD_BITS) { | |
60b350a3 | 725 | ECerr(EC_F_EC_GROUP_NEW_FROM_ECPARAMETERS, EC_R_FIELD_TOO_LARGE); |
0f113f3e MC |
726 | goto err; |
727 | } | |
728 | ||
729 | /* create the EC_GROUP structure */ | |
730 | ret = EC_GROUP_new_curve_GFp(p, a, b, NULL); | |
731 | } else { | |
60b350a3 | 732 | ECerr(EC_F_EC_GROUP_NEW_FROM_ECPARAMETERS, EC_R_INVALID_FIELD); |
0f113f3e MC |
733 | goto err; |
734 | } | |
735 | ||
736 | if (ret == NULL) { | |
60b350a3 | 737 | ECerr(EC_F_EC_GROUP_NEW_FROM_ECPARAMETERS, ERR_R_EC_LIB); |
0f113f3e MC |
738 | goto err; |
739 | } | |
740 | ||
741 | /* extract seed (optional) */ | |
742 | if (params->curve->seed != NULL) { | |
b548a1f1 | 743 | OPENSSL_free(ret->seed); |
75ebbd9a | 744 | if ((ret->seed = OPENSSL_malloc(params->curve->seed->length)) == NULL) { |
60b350a3 | 745 | ECerr(EC_F_EC_GROUP_NEW_FROM_ECPARAMETERS, ERR_R_MALLOC_FAILURE); |
0f113f3e MC |
746 | goto err; |
747 | } | |
748 | memcpy(ret->seed, params->curve->seed->data, | |
749 | params->curve->seed->length); | |
750 | ret->seed_len = params->curve->seed->length; | |
751 | } | |
752 | ||
753 | if (!params->order || !params->base || !params->base->data) { | |
60b350a3 | 754 | ECerr(EC_F_EC_GROUP_NEW_FROM_ECPARAMETERS, EC_R_ASN1_ERROR); |
0f113f3e MC |
755 | goto err; |
756 | } | |
757 | ||
758 | if ((point = EC_POINT_new(ret)) == NULL) | |
759 | goto err; | |
760 | ||
761 | /* set the point conversion form */ | |
762 | EC_GROUP_set_point_conversion_form(ret, (point_conversion_form_t) | |
763 | (params->base->data[0] & ~0x01)); | |
764 | ||
765 | /* extract the ec point */ | |
766 | if (!EC_POINT_oct2point(ret, point, params->base->data, | |
767 | params->base->length, NULL)) { | |
60b350a3 | 768 | ECerr(EC_F_EC_GROUP_NEW_FROM_ECPARAMETERS, ERR_R_EC_LIB); |
0f113f3e MC |
769 | goto err; |
770 | } | |
771 | ||
772 | /* extract the order */ | |
773 | if ((a = ASN1_INTEGER_to_BN(params->order, a)) == NULL) { | |
60b350a3 | 774 | ECerr(EC_F_EC_GROUP_NEW_FROM_ECPARAMETERS, ERR_R_ASN1_LIB); |
0f113f3e MC |
775 | goto err; |
776 | } | |
777 | if (BN_is_negative(a) || BN_is_zero(a)) { | |
60b350a3 | 778 | ECerr(EC_F_EC_GROUP_NEW_FROM_ECPARAMETERS, EC_R_INVALID_GROUP_ORDER); |
0f113f3e MC |
779 | goto err; |
780 | } | |
781 | if (BN_num_bits(a) > (int)field_bits + 1) { /* Hasse bound */ | |
60b350a3 | 782 | ECerr(EC_F_EC_GROUP_NEW_FROM_ECPARAMETERS, EC_R_INVALID_GROUP_ORDER); |
0f113f3e MC |
783 | goto err; |
784 | } | |
785 | ||
786 | /* extract the cofactor (optional) */ | |
787 | if (params->cofactor == NULL) { | |
23a1d5e9 RS |
788 | BN_free(b); |
789 | b = NULL; | |
0f113f3e | 790 | } else if ((b = ASN1_INTEGER_to_BN(params->cofactor, b)) == NULL) { |
60b350a3 | 791 | ECerr(EC_F_EC_GROUP_NEW_FROM_ECPARAMETERS, ERR_R_ASN1_LIB); |
0f113f3e MC |
792 | goto err; |
793 | } | |
794 | /* set the generator, order and cofactor (if present) */ | |
795 | if (!EC_GROUP_set_generator(ret, point, a, b)) { | |
60b350a3 | 796 | ECerr(EC_F_EC_GROUP_NEW_FROM_ECPARAMETERS, ERR_R_EC_LIB); |
0f113f3e MC |
797 | goto err; |
798 | } | |
799 | ||
bacaa618 NT |
800 | /* |
801 | * Check if the explicit parameters group just created matches one of the | |
802 | * built-in curves. | |
803 | * | |
804 | * We create a copy of the group just built, so that we can remove optional | |
805 | * fields for the lookup: we do this to avoid the possibility that one of | |
806 | * the optional parameters is used to force the library into using a less | |
807 | * performant and less secure EC_METHOD instead of the specialized one. | |
808 | * In any case, `seed` is not really used in any computation, while a | |
809 | * cofactor different from the one in the built-in table is just | |
810 | * mathematically wrong anyway and should not be used. | |
811 | */ | |
812 | if ((ctx = BN_CTX_new()) == NULL) { | |
813 | ECerr(EC_F_EC_GROUP_NEW_FROM_ECPARAMETERS, ERR_R_BN_LIB); | |
814 | goto err; | |
815 | } | |
816 | if ((dup = EC_GROUP_dup(ret)) == NULL | |
817 | || EC_GROUP_set_seed(dup, NULL, 0) != 1 | |
818 | || !EC_GROUP_set_generator(dup, point, a, NULL)) { | |
819 | ECerr(EC_F_EC_GROUP_NEW_FROM_ECPARAMETERS, ERR_R_EC_LIB); | |
820 | goto err; | |
821 | } | |
822 | if ((curve_name = ec_curve_nid_from_params(dup, ctx)) != NID_undef) { | |
823 | /* | |
824 | * The input explicit parameters successfully matched one of the | |
825 | * built-in curves: often for built-in curves we have specialized | |
826 | * methods with better performance and hardening. | |
827 | * | |
828 | * In this case we replace the `EC_GROUP` created through explicit | |
829 | * parameters with one created from a named group. | |
830 | */ | |
831 | EC_GROUP *named_group = NULL; | |
832 | ||
833 | #ifndef OPENSSL_NO_EC_NISTP_64_GCC_128 | |
834 | /* | |
835 | * NID_wap_wsg_idm_ecid_wtls12 and NID_secp224r1 are both aliases for | |
836 | * the same curve, we prefer the SECP nid when matching explicit | |
837 | * parameters as that is associated with a specialized EC_METHOD. | |
838 | */ | |
839 | if (curve_name == NID_wap_wsg_idm_ecid_wtls12) | |
840 | curve_name = NID_secp224r1; | |
841 | #endif /* !def(OPENSSL_NO_EC_NISTP_64_GCC_128) */ | |
842 | ||
843 | if ((named_group = EC_GROUP_new_by_curve_name(curve_name)) == NULL) { | |
844 | ECerr(EC_F_EC_GROUP_NEW_FROM_ECPARAMETERS, ERR_R_EC_LIB); | |
845 | goto err; | |
846 | } | |
847 | EC_GROUP_free(ret); | |
848 | ret = named_group; | |
849 | ||
850 | /* | |
851 | * Set the flag so that EC_GROUPs created from explicit parameters are | |
852 | * serialized using explicit parameters by default. | |
853 | */ | |
854 | EC_GROUP_set_asn1_flag(ret, OPENSSL_EC_EXPLICIT_CURVE); | |
855 | } | |
856 | ||
0f113f3e MC |
857 | ok = 1; |
858 | ||
8fdc3734 RS |
859 | err: |
860 | if (!ok) { | |
bacaa618 | 861 | EC_GROUP_free(ret); |
0f113f3e MC |
862 | ret = NULL; |
863 | } | |
bacaa618 | 864 | EC_GROUP_free(dup); |
0f113f3e | 865 | |
23a1d5e9 RS |
866 | BN_free(p); |
867 | BN_free(a); | |
868 | BN_free(b); | |
8fdc3734 | 869 | EC_POINT_free(point); |
bacaa618 NT |
870 | |
871 | BN_CTX_free(ctx); | |
872 | ||
26a7d938 | 873 | return ret; |
012c86ab BM |
874 | } |
875 | ||
60b350a3 | 876 | EC_GROUP *EC_GROUP_new_from_ecpkparameters(const ECPKPARAMETERS *params) |
0f113f3e MC |
877 | { |
878 | EC_GROUP *ret = NULL; | |
879 | int tmp = 0; | |
880 | ||
881 | if (params == NULL) { | |
60b350a3 | 882 | ECerr(EC_F_EC_GROUP_NEW_FROM_ECPKPARAMETERS, EC_R_MISSING_PARAMETERS); |
0f113f3e MC |
883 | return NULL; |
884 | } | |
885 | ||
886 | if (params->type == 0) { /* the curve is given by an OID */ | |
887 | tmp = OBJ_obj2nid(params->value.named_curve); | |
888 | if ((ret = EC_GROUP_new_by_curve_name(tmp)) == NULL) { | |
60b350a3 | 889 | ECerr(EC_F_EC_GROUP_NEW_FROM_ECPKPARAMETERS, |
0f113f3e MC |
890 | EC_R_EC_GROUP_NEW_BY_NAME_FAILURE); |
891 | return NULL; | |
892 | } | |
893 | EC_GROUP_set_asn1_flag(ret, OPENSSL_EC_NAMED_CURVE); | |
894 | } else if (params->type == 1) { /* the parameters are given by a | |
895 | * ECPARAMETERS structure */ | |
60b350a3 | 896 | ret = EC_GROUP_new_from_ecparameters(params->value.parameters); |
0f113f3e | 897 | if (!ret) { |
60b350a3 | 898 | ECerr(EC_F_EC_GROUP_NEW_FROM_ECPKPARAMETERS, ERR_R_EC_LIB); |
0f113f3e MC |
899 | return NULL; |
900 | } | |
e363534c | 901 | EC_GROUP_set_asn1_flag(ret, OPENSSL_EC_EXPLICIT_CURVE); |
0f113f3e MC |
902 | } else if (params->type == 2) { /* implicitlyCA */ |
903 | return NULL; | |
904 | } else { | |
60b350a3 | 905 | ECerr(EC_F_EC_GROUP_NEW_FROM_ECPKPARAMETERS, EC_R_ASN1_ERROR); |
0f113f3e MC |
906 | return NULL; |
907 | } | |
908 | ||
909 | return ret; | |
910 | } | |
012c86ab | 911 | |
14a7cfb3 | 912 | /* EC_GROUP <-> DER encoding of ECPKPARAMETERS */ |
012c86ab | 913 | |
6343829a | 914 | EC_GROUP *d2i_ECPKParameters(EC_GROUP **a, const unsigned char **in, long len) |
0f113f3e MC |
915 | { |
916 | EC_GROUP *group = NULL; | |
917 | ECPKPARAMETERS *params = NULL; | |
a46c9789 | 918 | const unsigned char *p = *in; |
0f113f3e | 919 | |
a46c9789 | 920 | if ((params = d2i_ECPKPARAMETERS(NULL, &p, len)) == NULL) { |
0f113f3e MC |
921 | ECerr(EC_F_D2I_ECPKPARAMETERS, EC_R_D2I_ECPKPARAMETERS_FAILURE); |
922 | ECPKPARAMETERS_free(params); | |
923 | return NULL; | |
924 | } | |
925 | ||
60b350a3 | 926 | if ((group = EC_GROUP_new_from_ecpkparameters(params)) == NULL) { |
0f113f3e MC |
927 | ECerr(EC_F_D2I_ECPKPARAMETERS, EC_R_PKPARAMETERS2GROUP_FAILURE); |
928 | ECPKPARAMETERS_free(params); | |
929 | return NULL; | |
930 | } | |
931 | ||
8fdc3734 | 932 | if (a) { |
bacaa618 | 933 | EC_GROUP_free(*a); |
0f113f3e | 934 | *a = group; |
8fdc3734 | 935 | } |
0f113f3e MC |
936 | |
937 | ECPKPARAMETERS_free(params); | |
a46c9789 | 938 | *in = p; |
26a7d938 | 939 | return group; |
0f113f3e | 940 | } |
012c86ab | 941 | |
14a7cfb3 | 942 | int i2d_ECPKParameters(const EC_GROUP *a, unsigned char **out) |
0f113f3e MC |
943 | { |
944 | int ret = 0; | |
60b350a3 | 945 | ECPKPARAMETERS *tmp = EC_GROUP_get_ecpkparameters(a, NULL); |
0f113f3e MC |
946 | if (tmp == NULL) { |
947 | ECerr(EC_F_I2D_ECPKPARAMETERS, EC_R_GROUP2PKPARAMETERS_FAILURE); | |
948 | return 0; | |
949 | } | |
950 | if ((ret = i2d_ECPKPARAMETERS(tmp, out)) == 0) { | |
951 | ECerr(EC_F_I2D_ECPKPARAMETERS, EC_R_I2D_ECPKPARAMETERS_FAILURE); | |
952 | ECPKPARAMETERS_free(tmp); | |
953 | return 0; | |
954 | } | |
955 | ECPKPARAMETERS_free(tmp); | |
26a7d938 | 956 | return ret; |
0f113f3e | 957 | } |
012c86ab | 958 | |
14a7cfb3 BM |
959 | /* some EC_KEY functions */ |
960 | ||
6343829a | 961 | EC_KEY *d2i_ECPrivateKey(EC_KEY **a, const unsigned char **in, long len) |
0f113f3e | 962 | { |
0f113f3e MC |
963 | EC_KEY *ret = NULL; |
964 | EC_PRIVATEKEY *priv_key = NULL; | |
a46c9789 | 965 | const unsigned char *p = *in; |
0f113f3e | 966 | |
a46c9789 | 967 | if ((priv_key = d2i_EC_PRIVATEKEY(NULL, &p, len)) == NULL) { |
0f113f3e | 968 | ECerr(EC_F_D2I_ECPRIVATEKEY, ERR_R_EC_LIB); |
0f113f3e MC |
969 | return NULL; |
970 | } | |
971 | ||
972 | if (a == NULL || *a == NULL) { | |
973 | if ((ret = EC_KEY_new()) == NULL) { | |
974 | ECerr(EC_F_D2I_ECPRIVATEKEY, ERR_R_MALLOC_FAILURE); | |
975 | goto err; | |
976 | } | |
0f113f3e MC |
977 | } else |
978 | ret = *a; | |
979 | ||
980 | if (priv_key->parameters) { | |
bacaa618 | 981 | EC_GROUP_free(ret->group); |
60b350a3 | 982 | ret->group = EC_GROUP_new_from_ecpkparameters(priv_key->parameters); |
0f113f3e MC |
983 | } |
984 | ||
985 | if (ret->group == NULL) { | |
986 | ECerr(EC_F_D2I_ECPRIVATEKEY, ERR_R_EC_LIB); | |
987 | goto err; | |
988 | } | |
989 | ||
990 | ret->version = priv_key->version; | |
991 | ||
992 | if (priv_key->privateKey) { | |
d810700b | 993 | ASN1_OCTET_STRING *pkey = priv_key->privateKey; |
17ebf85a | 994 | if (EC_KEY_oct2priv(ret, ASN1_STRING_get0_data(pkey), |
d810700b | 995 | ASN1_STRING_length(pkey)) == 0) |
0f113f3e | 996 | goto err; |
0f113f3e MC |
997 | } else { |
998 | ECerr(EC_F_D2I_ECPRIVATEKEY, EC_R_MISSING_PRIVATE_KEY); | |
999 | goto err; | |
1000 | } | |
1001 | ||
8fdc3734 | 1002 | EC_POINT_clear_free(ret->pub_key); |
0f113f3e MC |
1003 | ret->pub_key = EC_POINT_new(ret->group); |
1004 | if (ret->pub_key == NULL) { | |
1005 | ECerr(EC_F_D2I_ECPRIVATEKEY, ERR_R_EC_LIB); | |
1006 | goto err; | |
1007 | } | |
1008 | ||
1009 | if (priv_key->publicKey) { | |
1010 | const unsigned char *pub_oct; | |
1011 | int pub_oct_len; | |
1012 | ||
17ebf85a | 1013 | pub_oct = ASN1_STRING_get0_data(priv_key->publicKey); |
f422a514 | 1014 | pub_oct_len = ASN1_STRING_length(priv_key->publicKey); |
6ea04154 | 1015 | if (!EC_KEY_oct2key(ret, pub_oct, pub_oct_len, NULL)) { |
0f113f3e MC |
1016 | ECerr(EC_F_D2I_ECPRIVATEKEY, ERR_R_EC_LIB); |
1017 | goto err; | |
1018 | } | |
1019 | } else { | |
77470e98 DSH |
1020 | if (ret->group->meth->keygenpub == NULL |
1021 | || ret->group->meth->keygenpub(ret) == 0) | |
6903e2e7 | 1022 | goto err; |
0f113f3e MC |
1023 | /* Remember the original private-key-only encoding. */ |
1024 | ret->enc_flag |= EC_PKEY_NO_PUBKEY; | |
1025 | } | |
1026 | ||
9e442d48 MC |
1027 | if (a) |
1028 | *a = ret; | |
25aaa98a | 1029 | EC_PRIVATEKEY_free(priv_key); |
a46c9789 | 1030 | *in = p; |
26a7d938 | 1031 | return ret; |
25aaa98a RS |
1032 | |
1033 | err: | |
1034 | if (a == NULL || *a != ret) | |
1035 | EC_KEY_free(ret); | |
1036 | EC_PRIVATEKEY_free(priv_key); | |
1037 | return NULL; | |
0f113f3e MC |
1038 | } |
1039 | ||
9fdcc21f | 1040 | int i2d_ECPrivateKey(const EC_KEY *a, unsigned char **out) |
0f113f3e MC |
1041 | { |
1042 | int ret = 0, ok = 0; | |
7fc7d1a7 | 1043 | unsigned char *priv= NULL, *pub= NULL; |
8a41fa6f | 1044 | size_t privlen = 0, publen = 0; |
7fc7d1a7 | 1045 | |
0f113f3e MC |
1046 | EC_PRIVATEKEY *priv_key = NULL; |
1047 | ||
d810700b | 1048 | if (a == NULL || a->group == NULL || |
0f113f3e MC |
1049 | (!(a->enc_flag & EC_PKEY_NO_PUBKEY) && a->pub_key == NULL)) { |
1050 | ECerr(EC_F_I2D_ECPRIVATEKEY, ERR_R_PASSED_NULL_PARAMETER); | |
1051 | goto err; | |
1052 | } | |
1053 | ||
1054 | if ((priv_key = EC_PRIVATEKEY_new()) == NULL) { | |
1055 | ECerr(EC_F_I2D_ECPRIVATEKEY, ERR_R_MALLOC_FAILURE); | |
1056 | goto err; | |
1057 | } | |
1058 | ||
1059 | priv_key->version = a->version; | |
1060 | ||
7fc7d1a7 | 1061 | privlen = EC_KEY_priv2buf(a, &priv); |
30cd4ff2 | 1062 | |
7fc7d1a7 | 1063 | if (privlen == 0) { |
d810700b | 1064 | ECerr(EC_F_I2D_ECPRIVATEKEY, ERR_R_EC_LIB); |
30cd4ff2 DE |
1065 | goto err; |
1066 | } | |
1067 | ||
7fc7d1a7 DSH |
1068 | ASN1_STRING_set0(priv_key->privateKey, priv, privlen); |
1069 | priv = NULL; | |
0f113f3e MC |
1070 | |
1071 | if (!(a->enc_flag & EC_PKEY_NO_PARAMETERS)) { | |
1072 | if ((priv_key->parameters = | |
60b350a3 | 1073 | EC_GROUP_get_ecpkparameters(a->group, |
0f113f3e MC |
1074 | priv_key->parameters)) == NULL) { |
1075 | ECerr(EC_F_I2D_ECPRIVATEKEY, ERR_R_EC_LIB); | |
1076 | goto err; | |
1077 | } | |
1078 | } | |
1079 | ||
1080 | if (!(a->enc_flag & EC_PKEY_NO_PUBKEY)) { | |
f422a514 | 1081 | priv_key->publicKey = ASN1_BIT_STRING_new(); |
0f113f3e MC |
1082 | if (priv_key->publicKey == NULL) { |
1083 | ECerr(EC_F_I2D_ECPRIVATEKEY, ERR_R_MALLOC_FAILURE); | |
1084 | goto err; | |
1085 | } | |
1086 | ||
7fc7d1a7 | 1087 | publen = EC_KEY_key2buf(a, a->conv_form, &pub, NULL); |
0f113f3e | 1088 | |
7fc7d1a7 | 1089 | if (publen == 0) { |
0f113f3e MC |
1090 | ECerr(EC_F_I2D_ECPRIVATEKEY, ERR_R_EC_LIB); |
1091 | goto err; | |
1092 | } | |
1093 | ||
1094 | priv_key->publicKey->flags &= ~(ASN1_STRING_FLAG_BITS_LEFT | 0x07); | |
1095 | priv_key->publicKey->flags |= ASN1_STRING_FLAG_BITS_LEFT; | |
7fc7d1a7 DSH |
1096 | ASN1_STRING_set0(priv_key->publicKey, pub, publen); |
1097 | pub = NULL; | |
0f113f3e MC |
1098 | } |
1099 | ||
1100 | if ((ret = i2d_EC_PRIVATEKEY(priv_key, out)) == 0) { | |
1101 | ECerr(EC_F_I2D_ECPRIVATEKEY, ERR_R_EC_LIB); | |
1102 | goto err; | |
1103 | } | |
1104 | ok = 1; | |
1105 | err: | |
7fc7d1a7 DSH |
1106 | OPENSSL_clear_free(priv, privlen); |
1107 | OPENSSL_free(pub); | |
25aaa98a | 1108 | EC_PRIVATEKEY_free(priv_key); |
0f113f3e MC |
1109 | return (ok ? ret : 0); |
1110 | } | |
14a7cfb3 | 1111 | |
9fdcc21f | 1112 | int i2d_ECParameters(const EC_KEY *a, unsigned char **out) |
0f113f3e MC |
1113 | { |
1114 | if (a == NULL) { | |
1115 | ECerr(EC_F_I2D_ECPARAMETERS, ERR_R_PASSED_NULL_PARAMETER); | |
1116 | return 0; | |
1117 | } | |
1118 | return i2d_ECPKParameters(a->group, out); | |
1119 | } | |
14a7cfb3 BM |
1120 | |
1121 | EC_KEY *d2i_ECParameters(EC_KEY **a, const unsigned char **in, long len) | |
0f113f3e MC |
1122 | { |
1123 | EC_KEY *ret; | |
1124 | ||
1125 | if (in == NULL || *in == NULL) { | |
1126 | ECerr(EC_F_D2I_ECPARAMETERS, ERR_R_PASSED_NULL_PARAMETER); | |
1127 | return NULL; | |
1128 | } | |
1129 | ||
1130 | if (a == NULL || *a == NULL) { | |
1131 | if ((ret = EC_KEY_new()) == NULL) { | |
1132 | ECerr(EC_F_D2I_ECPARAMETERS, ERR_R_MALLOC_FAILURE); | |
1133 | return NULL; | |
1134 | } | |
0f113f3e MC |
1135 | } else |
1136 | ret = *a; | |
1137 | ||
1138 | if (!d2i_ECPKParameters(&ret->group, in, len)) { | |
1139 | ECerr(EC_F_D2I_ECPARAMETERS, ERR_R_EC_LIB); | |
5e5d53d3 MC |
1140 | if (a == NULL || *a != ret) |
1141 | EC_KEY_free(ret); | |
0f113f3e MC |
1142 | return NULL; |
1143 | } | |
1144 | ||
5e5d53d3 MC |
1145 | if (a) |
1146 | *a = ret; | |
1147 | ||
0f113f3e MC |
1148 | return ret; |
1149 | } | |
14a7cfb3 | 1150 | |
62e3163b | 1151 | EC_KEY *o2i_ECPublicKey(EC_KEY **a, const unsigned char **in, long len) |
0f113f3e MC |
1152 | { |
1153 | EC_KEY *ret = NULL; | |
1154 | ||
1155 | if (a == NULL || (*a) == NULL || (*a)->group == NULL) { | |
1156 | /* | |
0d4fb843 | 1157 | * sorry, but a EC_GROUP-structure is necessary to set the public key |
0f113f3e MC |
1158 | */ |
1159 | ECerr(EC_F_O2I_ECPUBLICKEY, ERR_R_PASSED_NULL_PARAMETER); | |
1160 | return 0; | |
1161 | } | |
1162 | ret = *a; | |
6ea04154 | 1163 | if (!EC_KEY_oct2key(ret, *in, len, NULL)) { |
0f113f3e MC |
1164 | ECerr(EC_F_O2I_ECPUBLICKEY, ERR_R_EC_LIB); |
1165 | return 0; | |
1166 | } | |
0f113f3e MC |
1167 | *in += len; |
1168 | return ret; | |
1169 | } | |
14a7cfb3 | 1170 | |
60c25873 | 1171 | int i2o_ECPublicKey(const EC_KEY *a, unsigned char **out) |
0f113f3e MC |
1172 | { |
1173 | size_t buf_len = 0; | |
1174 | int new_buffer = 0; | |
1175 | ||
1176 | if (a == NULL) { | |
1177 | ECerr(EC_F_I2O_ECPUBLICKEY, ERR_R_PASSED_NULL_PARAMETER); | |
1178 | return 0; | |
1179 | } | |
1180 | ||
1181 | buf_len = EC_POINT_point2oct(a->group, a->pub_key, | |
1182 | a->conv_form, NULL, 0, NULL); | |
1183 | ||
1184 | if (out == NULL || buf_len == 0) | |
1185 | /* out == NULL => just return the length of the octet string */ | |
1186 | return buf_len; | |
1187 | ||
1188 | if (*out == NULL) { | |
1189 | if ((*out = OPENSSL_malloc(buf_len)) == NULL) { | |
1190 | ECerr(EC_F_I2O_ECPUBLICKEY, ERR_R_MALLOC_FAILURE); | |
1191 | return 0; | |
1192 | } | |
1193 | new_buffer = 1; | |
1194 | } | |
1195 | if (!EC_POINT_point2oct(a->group, a->pub_key, a->conv_form, | |
1196 | *out, buf_len, NULL)) { | |
1197 | ECerr(EC_F_I2O_ECPUBLICKEY, ERR_R_EC_LIB); | |
1198 | if (new_buffer) { | |
1199 | OPENSSL_free(*out); | |
1200 | *out = NULL; | |
1201 | } | |
1202 | return 0; | |
1203 | } | |
1204 | if (!new_buffer) | |
1205 | *out += buf_len; | |
1206 | return buf_len; | |
1207 | } | |
2d3d00dc | 1208 | |
9fdcc21f DO |
1209 | DECLARE_ASN1_FUNCTIONS(ECDSA_SIG) |
1210 | DECLARE_ASN1_ENCODE_FUNCTIONS_name(ECDSA_SIG, ECDSA_SIG) | |
8cc44d97 | 1211 | |
a9612d6c MC |
1212 | #endif /* FIPS_MODE */ |
1213 | ||
8cc44d97 DSH |
1214 | ECDSA_SIG *ECDSA_SIG_new(void) |
1215 | { | |
1216 | ECDSA_SIG *sig = OPENSSL_zalloc(sizeof(*sig)); | |
1217 | if (sig == NULL) | |
1218 | ECerr(EC_F_ECDSA_SIG_NEW, ERR_R_MALLOC_FAILURE); | |
1219 | return sig; | |
1220 | } | |
1221 | ||
1222 | void ECDSA_SIG_free(ECDSA_SIG *sig) | |
1223 | { | |
1224 | if (sig == NULL) | |
1225 | return; | |
1226 | BN_clear_free(sig->r); | |
1227 | BN_clear_free(sig->s); | |
1228 | OPENSSL_free(sig); | |
1229 | } | |
7236e3c8 | 1230 | |
54846b7c DM |
1231 | ECDSA_SIG *d2i_ECDSA_SIG(ECDSA_SIG **psig, const unsigned char **ppin, long len) |
1232 | { | |
1233 | ECDSA_SIG *sig; | |
1234 | ||
1235 | if (len < 0) | |
1236 | return NULL; | |
1237 | if (psig != NULL && *psig != NULL) { | |
1238 | sig = *psig; | |
1239 | } else { | |
1240 | sig = ECDSA_SIG_new(); | |
1241 | if (sig == NULL) | |
1242 | return NULL; | |
1243 | } | |
1244 | if (sig->r == NULL) | |
1245 | sig->r = BN_new(); | |
1246 | if (sig->s == NULL) | |
1247 | sig->s = BN_new(); | |
1248 | if (decode_der_dsa_sig(sig->r, sig->s, ppin, (size_t)len) == 0) { | |
1249 | if (psig == NULL || *psig == NULL) | |
1250 | ECDSA_SIG_free(sig); | |
1251 | return NULL; | |
1252 | } | |
1253 | if (psig != NULL && *psig == NULL) | |
1254 | *psig = sig; | |
1255 | return sig; | |
1256 | } | |
1257 | ||
1258 | int i2d_ECDSA_SIG(const ECDSA_SIG *sig, unsigned char **ppout) | |
1259 | { | |
b8805834 | 1260 | BUF_MEM *buf = NULL; |
54846b7c | 1261 | size_t encoded_len; |
b8805834 | 1262 | WPACKET pkt; |
54846b7c | 1263 | |
b8805834 MC |
1264 | if (ppout == NULL) { |
1265 | if (!WPACKET_init_null(&pkt, 0)) | |
54846b7c | 1266 | return -1; |
b8805834 MC |
1267 | } else if (*ppout == NULL) { |
1268 | if ((buf = BUF_MEM_new()) == NULL | |
1269 | || !WPACKET_init_len(&pkt, buf, 0)) { | |
1270 | BUF_MEM_free(buf); | |
54846b7c | 1271 | return -1; |
b8805834 | 1272 | } |
54846b7c | 1273 | } else { |
b8805834 MC |
1274 | if (!WPACKET_init_static_len(&pkt, *ppout, SIZE_MAX, 0)) |
1275 | return -1; | |
54846b7c | 1276 | } |
b8805834 MC |
1277 | |
1278 | if (!encode_der_dsa_sig(&pkt, sig->r, sig->s) | |
1279 | || !WPACKET_get_total_written(&pkt, &encoded_len) | |
1280 | || !WPACKET_finish(&pkt)) { | |
1281 | BUF_MEM_free(buf); | |
1282 | WPACKET_cleanup(&pkt); | |
54846b7c DM |
1283 | return -1; |
1284 | } | |
b8805834 MC |
1285 | |
1286 | if (ppout != NULL) { | |
1287 | if (*ppout == NULL) { | |
1288 | *ppout = (unsigned char *)buf->data; | |
1289 | buf->data = NULL; | |
1290 | BUF_MEM_free(buf); | |
1291 | } else { | |
1292 | *ppout += encoded_len; | |
1293 | } | |
1294 | } | |
1295 | ||
54846b7c DM |
1296 | return (int)encoded_len; |
1297 | } | |
1298 | ||
9267c11b | 1299 | void ECDSA_SIG_get0(const ECDSA_SIG *sig, const BIGNUM **pr, const BIGNUM **ps) |
7236e3c8 | 1300 | { |
91e7bcc2 | 1301 | if (pr != NULL) |
7236e3c8 | 1302 | *pr = sig->r; |
91e7bcc2 | 1303 | if (ps != NULL) |
7236e3c8 DSH |
1304 | *ps = sig->s; |
1305 | } | |
cf517a6d | 1306 | |
0396401d DMSP |
1307 | const BIGNUM *ECDSA_SIG_get0_r(const ECDSA_SIG *sig) |
1308 | { | |
1309 | return sig->r; | |
1310 | } | |
1311 | ||
1312 | const BIGNUM *ECDSA_SIG_get0_s(const ECDSA_SIG *sig) | |
1313 | { | |
1314 | return sig->s; | |
1315 | } | |
1316 | ||
7ca3ea22 | 1317 | int ECDSA_SIG_set0(ECDSA_SIG *sig, BIGNUM *r, BIGNUM *s) |
6a571a18 | 1318 | { |
bbaa9dd8 TS |
1319 | if (r == NULL || s == NULL) |
1320 | return 0; | |
6a571a18 TS |
1321 | BN_clear_free(sig->r); |
1322 | BN_clear_free(sig->s); | |
1323 | sig->r = r; | |
1324 | sig->s = s; | |
1325 | return 1; | |
1326 | } | |
1327 | ||
a9612d6c | 1328 | #ifndef FIPS_MODE |
cf517a6d DSH |
1329 | int ECDSA_size(const EC_KEY *r) |
1330 | { | |
1331 | int ret, i; | |
1332 | ASN1_INTEGER bs; | |
cf517a6d DSH |
1333 | unsigned char buf[4]; |
1334 | const EC_GROUP *group; | |
1335 | ||
1336 | if (r == NULL) | |
1337 | return 0; | |
1338 | group = EC_KEY_get0_group(r); | |
1339 | if (group == NULL) | |
1340 | return 0; | |
1341 | ||
be2e334f DSH |
1342 | i = EC_GROUP_order_bits(group); |
1343 | if (i == 0) | |
cf517a6d | 1344 | return 0; |
cf517a6d DSH |
1345 | bs.length = (i + 7) / 8; |
1346 | bs.data = buf; | |
1347 | bs.type = V_ASN1_INTEGER; | |
1348 | /* If the top bit is set the asn1 encoding is 1 larger. */ | |
1349 | buf[0] = 0xff; | |
1350 | ||
1351 | i = i2d_ASN1_INTEGER(&bs, NULL); | |
1352 | i += i; /* r and s */ | |
1353 | ret = ASN1_object_size(1, i, V_ASN1_SEQUENCE); | |
26a7d938 | 1354 | return ret; |
cf517a6d | 1355 | } |
a9612d6c | 1356 | #endif |