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Commit | Line | Data |
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b1322259 | 1 | /* |
33388b44 | 2 | * Copyright 1995-2020 The OpenSSL Project Authors. All Rights Reserved. |
d02b48c6 | 3 | * |
3e4b43b9 | 4 | * Licensed under the Apache License 2.0 (the "License"). You may not use |
b1322259 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 | |
d02b48c6 RE |
8 | */ |
9 | ||
f41ac0ee P |
10 | /* |
11 | * DSA low level APIs are deprecated for public use, but still ok for | |
12 | * internal use. | |
13 | */ | |
14 | #include "internal/deprecated.h" | |
15 | ||
d02b48c6 | 16 | #include <stdio.h> |
b39fc560 | 17 | #include "internal/cryptlib.h" |
9d6b1ce6 | 18 | #include <openssl/asn1t.h> |
f0e8ae72 | 19 | #include <openssl/x509.h> |
25f2138b DMSP |
20 | #include "crypto/asn1.h" |
21 | #include "crypto/evp.h" | |
22 | #include "crypto/x509.h" | |
3c27208f RS |
23 | #include <openssl/rsa.h> |
24 | #include <openssl/dsa.h> | |
ece9304c | 25 | #include <openssl/encoder.h> |
d02b48c6 | 26 | |
29fa0a1a DSH |
27 | struct X509_pubkey_st { |
28 | X509_ALGOR *algor; | |
29 | ASN1_BIT_STRING *public_key; | |
30 | EVP_PKEY *pkey; | |
22b81444 RL |
31 | |
32 | /* extra data for the callback, used by d2i_PUBKEY_ex */ | |
33 | OPENSSL_CTX *libctx; | |
34 | const char *propq; | |
29fa0a1a DSH |
35 | }; |
36 | ||
7674e923 | 37 | static int x509_pubkey_decode(EVP_PKEY **pk, const X509_PUBKEY *key); |
fa0a9d71 | 38 | |
9d6b1ce6 | 39 | /* Minor tweak to operation: free up EVP_PKEY */ |
24484759 | 40 | static int pubkey_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it, |
0f113f3e MC |
41 | void *exarg) |
42 | { | |
43 | if (operation == ASN1_OP_FREE_POST) { | |
44 | X509_PUBKEY *pubkey = (X509_PUBKEY *)*pval; | |
45 | EVP_PKEY_free(pubkey->pkey); | |
d2ec189f DSH |
46 | } else if (operation == ASN1_OP_D2I_POST) { |
47 | /* Attempt to decode public key and cache in pubkey structure. */ | |
48 | X509_PUBKEY *pubkey = (X509_PUBKEY *)*pval; | |
49 | EVP_PKEY_free(pubkey->pkey); | |
5dc40a83 | 50 | pubkey->pkey = NULL; |
d2ec189f | 51 | /* |
fa0a9d71 DSH |
52 | * Opportunistically decode the key but remove any non fatal errors |
53 | * from the queue. Subsequent explicit attempts to decode/use the key | |
54 | * will return an appropriate error. | |
d2ec189f DSH |
55 | */ |
56 | ERR_set_mark(); | |
fa0a9d71 DSH |
57 | if (x509_pubkey_decode(&pubkey->pkey, pubkey) == -1) |
58 | return 0; | |
d2ec189f | 59 | ERR_pop_to_mark(); |
0f113f3e MC |
60 | } |
61 | return 1; | |
62 | } | |
d02b48c6 | 63 | |
9d6b1ce6 | 64 | ASN1_SEQUENCE_cb(X509_PUBKEY, pubkey_cb) = { |
0f113f3e MC |
65 | ASN1_SIMPLE(X509_PUBKEY, algor, X509_ALGOR), |
66 | ASN1_SIMPLE(X509_PUBKEY, public_key, ASN1_BIT_STRING) | |
d339187b | 67 | } ASN1_SEQUENCE_END_cb(X509_PUBKEY, X509_PUBKEY) |
d02b48c6 | 68 | |
9d6b1ce6 | 69 | IMPLEMENT_ASN1_FUNCTIONS(X509_PUBKEY) |
a8f1aabd | 70 | IMPLEMENT_ASN1_DUP_FUNCTION(X509_PUBKEY) |
d02b48c6 | 71 | |
9fdcc21f | 72 | /* TODO should better be called X509_PUBKEY_set1 */ |
6b691a5c | 73 | int X509_PUBKEY_set(X509_PUBKEY **x, EVP_PKEY *pkey) |
0f113f3e MC |
74 | { |
75 | X509_PUBKEY *pk = NULL; | |
76 | ||
77 | if (x == NULL) | |
26a7d938 | 78 | return 0; |
0f113f3e | 79 | |
e56ba0e1 RL |
80 | if (pkey == NULL) |
81 | goto unsupported; | |
0f113f3e | 82 | |
e56ba0e1 RL |
83 | if (pkey->ameth != NULL) { |
84 | if ((pk = X509_PUBKEY_new()) == NULL) { | |
85 | X509err(X509_F_X509_PUBKEY_SET, ERR_R_MALLOC_FAILURE); | |
86 | goto error; | |
87 | } | |
88 | if (pkey->ameth->pub_encode != NULL) { | |
0f113f3e MC |
89 | if (!pkey->ameth->pub_encode(pk, pkey)) { |
90 | X509err(X509_F_X509_PUBKEY_SET, | |
91 | X509_R_PUBLIC_KEY_ENCODE_ERROR); | |
92 | goto error; | |
93 | } | |
94 | } else { | |
95 | X509err(X509_F_X509_PUBKEY_SET, X509_R_METHOD_NOT_SUPPORTED); | |
96 | goto error; | |
97 | } | |
3c6ed955 | 98 | } else if (pkey->keymgmt != NULL) { |
e56ba0e1 | 99 | BIO *bmem = BIO_new(BIO_s_mem()); |
ece9304c RL |
100 | const char *encprop = OSSL_ENCODER_PUBKEY_TO_DER_PQ; |
101 | OSSL_ENCODER_CTX *ectx = | |
102 | OSSL_ENCODER_CTX_new_by_EVP_PKEY(pkey, encprop); | |
e56ba0e1 | 103 | |
ece9304c | 104 | if (OSSL_ENCODER_to_bio(ectx, bmem)) { |
e56ba0e1 RL |
105 | const unsigned char *der = NULL; |
106 | long derlen = BIO_get_mem_data(bmem, (char **)&der); | |
107 | ||
108 | pk = d2i_X509_PUBKEY(NULL, &der, derlen); | |
109 | } | |
110 | ||
ece9304c | 111 | OSSL_ENCODER_CTX_free(ectx); |
e56ba0e1 | 112 | BIO_free(bmem); |
0f113f3e MC |
113 | } |
114 | ||
e56ba0e1 RL |
115 | if (pk == NULL) |
116 | goto unsupported; | |
117 | ||
222561fe | 118 | X509_PUBKEY_free(*x); |
e56ba0e1 RL |
119 | if (!EVP_PKEY_up_ref(pkey)) { |
120 | X509err(X509_F_X509_PUBKEY_SET, ERR_R_INTERNAL_ERROR); | |
121 | goto error; | |
122 | } | |
0f113f3e | 123 | *x = pk; |
a076951b RL |
124 | |
125 | /* | |
126 | * pk->pkey is NULL when using the legacy routine, but is non-NULL when | |
ece9304c | 127 | * going through the encoder, and for all intents and purposes, it's |
a076951b RL |
128 | * a perfect copy of |pkey|, just not the same instance. In that case, |
129 | * we could simply return early, right here. | |
130 | * However, in the interest of being cautious leaning on paranoia, some | |
131 | * application might very well depend on the passed |pkey| being used | |
132 | * and none other, so we spend a few more cycles throwing away the newly | |
133 | * created |pk->pkey| and replace it with |pkey|. | |
134 | * TODO(3.0) Investigate if it's safe to change to simply return here | |
135 | * if |pk->pkey != NULL|. | |
136 | */ | |
137 | if (pk->pkey != NULL) | |
138 | EVP_PKEY_free(pk->pkey); | |
139 | ||
fa0a9d71 | 140 | pk->pkey = pkey; |
e56ba0e1 RL |
141 | return 1; |
142 | ||
143 | unsupported: | |
144 | X509err(X509_F_X509_PUBKEY_SET, X509_R_UNSUPPORTED_ALGORITHM); | |
222561fe | 145 | |
0f113f3e | 146 | error: |
222561fe | 147 | X509_PUBKEY_free(pk); |
0f113f3e MC |
148 | return 0; |
149 | } | |
d02b48c6 | 150 | |
fa0a9d71 DSH |
151 | /* |
152 | * Attempt to decode a public key. | |
153 | * Returns 1 on success, 0 for a decode failure and -1 for a fatal | |
154 | * error e.g. malloc failure. | |
155 | */ | |
0f113f3e | 156 | |
0f113f3e | 157 | |
7674e923 | 158 | static int x509_pubkey_decode(EVP_PKEY **ppkey, const X509_PUBKEY *key) |
7fcdbd83 | 159 | { |
fa0a9d71 | 160 | EVP_PKEY *pkey = EVP_PKEY_new(); |
0f113f3e | 161 | |
fa0a9d71 DSH |
162 | if (pkey == NULL) { |
163 | X509err(X509_F_X509_PUBKEY_DECODE, ERR_R_MALLOC_FAILURE); | |
164 | return -1; | |
0f113f3e MC |
165 | } |
166 | ||
fa0a9d71 DSH |
167 | if (!EVP_PKEY_set_type(pkey, OBJ_obj2nid(key->algor->algorithm))) { |
168 | X509err(X509_F_X509_PUBKEY_DECODE, X509_R_UNSUPPORTED_ALGORITHM); | |
0f113f3e MC |
169 | goto error; |
170 | } | |
171 | ||
fa0a9d71 DSH |
172 | if (pkey->ameth->pub_decode) { |
173 | /* | |
174 | * Treat any failure of pub_decode as a decode error. In | |
175 | * future we could have different return codes for decode | |
176 | * errors and fatal errors such as malloc failure. | |
177 | */ | |
178 | if (!pkey->ameth->pub_decode(pkey, key)) { | |
179 | X509err(X509_F_X509_PUBKEY_DECODE, X509_R_PUBLIC_KEY_DECODE_ERROR); | |
0f113f3e MC |
180 | goto error; |
181 | } | |
182 | } else { | |
fa0a9d71 | 183 | X509err(X509_F_X509_PUBKEY_DECODE, X509_R_METHOD_NOT_SUPPORTED); |
0f113f3e MC |
184 | goto error; |
185 | } | |
186 | ||
fa0a9d71 DSH |
187 | *ppkey = pkey; |
188 | return 1; | |
0f113f3e MC |
189 | |
190 | error: | |
fa0a9d71 DSH |
191 | EVP_PKEY_free(pkey); |
192 | return 0; | |
193 | } | |
194 | ||
7674e923 | 195 | EVP_PKEY *X509_PUBKEY_get0(const X509_PUBKEY *key) |
fa0a9d71 DSH |
196 | { |
197 | EVP_PKEY *ret = NULL; | |
198 | ||
199 | if (key == NULL || key->public_key == NULL) | |
200 | return NULL; | |
201 | ||
202 | if (key->pkey != NULL) | |
203 | return key->pkey; | |
204 | ||
205 | /* | |
206 | * When the key ASN.1 is initially parsed an attempt is made to | |
207 | * decode the public key and cache the EVP_PKEY structure. If this | |
208 | * operation fails the cached value will be NULL. Parsing continues | |
209 | * to allow parsing of unknown key types or unsupported forms. | |
210 | * We repeat the decode operation so the appropriate errors are left | |
211 | * in the queue. | |
212 | */ | |
213 | x509_pubkey_decode(&ret, key); | |
214 | /* If decode doesn't fail something bad happened */ | |
215 | if (ret != NULL) { | |
216 | X509err(X509_F_X509_PUBKEY_GET0, ERR_R_INTERNAL_ERROR); | |
217 | EVP_PKEY_free(ret); | |
218 | } | |
219 | ||
220 | return NULL; | |
0f113f3e MC |
221 | } |
222 | ||
7674e923 | 223 | EVP_PKEY *X509_PUBKEY_get(const X509_PUBKEY *key) |
c01ff880 DSH |
224 | { |
225 | EVP_PKEY *ret = X509_PUBKEY_get0(key); | |
e9e7b5df BE |
226 | |
227 | if (ret != NULL && !EVP_PKEY_up_ref(ret)) { | |
228 | X509err(X509_F_X509_PUBKEY_GET, ERR_R_INTERNAL_ERROR); | |
229 | ret = NULL; | |
230 | } | |
c01ff880 DSH |
231 | return ret; |
232 | } | |
233 | ||
0f113f3e | 234 | /* |
22b81444 RL |
235 | * Now three pseudo ASN1 routines that take an EVP_PKEY structure and encode |
236 | * or decode as X509_PUBKEY | |
52664f50 DSH |
237 | */ |
238 | ||
22b81444 RL |
239 | EVP_PKEY *d2i_PUBKEY_ex(EVP_PKEY **a, const unsigned char **pp, long length, |
240 | OPENSSL_CTX *libctx, const char *propq) | |
0f113f3e | 241 | { |
22b81444 RL |
242 | X509_PUBKEY *xpk, *xpk2 = NULL, **pxpk = NULL; |
243 | EVP_PKEY *pktmp = NULL; | |
a46c9789 | 244 | const unsigned char *q; |
12a765a5 | 245 | |
a46c9789 | 246 | q = *pp; |
22b81444 RL |
247 | |
248 | /* | |
249 | * If libctx or propq are non-NULL, we take advantage of the reuse | |
250 | * feature. It's not generally recommended, but is safe enough for | |
251 | * newly created structures. | |
252 | */ | |
253 | if (libctx != NULL || propq != NULL) { | |
254 | xpk2 = OPENSSL_zalloc(sizeof(*xpk2)); | |
255 | if (xpk2 == NULL) { | |
256 | ERR_raise(ERR_LIB_X509, ERR_R_MALLOC_FAILURE); | |
257 | return NULL; | |
258 | } | |
259 | xpk2->libctx = libctx; | |
260 | xpk2->propq = propq; | |
261 | pxpk = &xpk2; | |
262 | } | |
263 | xpk = d2i_X509_PUBKEY(pxpk, &q, length); | |
12a765a5 | 264 | if (xpk == NULL) |
22b81444 | 265 | goto end; |
0f113f3e MC |
266 | pktmp = X509_PUBKEY_get(xpk); |
267 | X509_PUBKEY_free(xpk); | |
22b81444 | 268 | xpk2 = NULL; /* We know that xpk == xpk2 */ |
12a765a5 | 269 | if (pktmp == NULL) |
22b81444 | 270 | goto end; |
a46c9789 | 271 | *pp = q; |
12a765a5 | 272 | if (a != NULL) { |
0f113f3e MC |
273 | EVP_PKEY_free(*a); |
274 | *a = pktmp; | |
275 | } | |
22b81444 RL |
276 | end: |
277 | X509_PUBKEY_free(xpk2); | |
0f113f3e MC |
278 | return pktmp; |
279 | } | |
52664f50 | 280 | |
22b81444 RL |
281 | EVP_PKEY *d2i_PUBKEY(EVP_PKEY **a, const unsigned char **pp, long length) |
282 | { | |
283 | return d2i_PUBKEY_ex(a, pp, length, NULL, NULL); | |
284 | } | |
285 | ||
9fdcc21f | 286 | int i2d_PUBKEY(const EVP_PKEY *a, unsigned char **pp) |
0f113f3e | 287 | { |
9fdcc21f DO |
288 | int ret = -1; |
289 | ||
290 | if (a == NULL) | |
0f113f3e | 291 | return 0; |
cdb16632 RL |
292 | if (a->ameth != NULL) { |
293 | X509_PUBKEY *xpk = NULL; | |
294 | ||
295 | if ((xpk = X509_PUBKEY_new()) == NULL) | |
296 | return -1; | |
297 | ||
298 | /* pub_encode() only encode parameters, not the key itself */ | |
299 | if (a->ameth->pub_encode != NULL && a->ameth->pub_encode(xpk, a)) { | |
300 | xpk->pkey = (EVP_PKEY *)a; | |
301 | ret = i2d_X509_PUBKEY(xpk, pp); | |
302 | xpk->pkey = NULL; | |
303 | } | |
304 | X509_PUBKEY_free(xpk); | |
3c6ed955 | 305 | } else if (a->keymgmt != NULL) { |
ece9304c RL |
306 | const char *encprop = OSSL_ENCODER_PUBKEY_TO_DER_PQ; |
307 | OSSL_ENCODER_CTX *ctx = | |
308 | OSSL_ENCODER_CTX_new_by_EVP_PKEY(a, encprop); | |
cdb16632 RL |
309 | BIO *out = BIO_new(BIO_s_mem()); |
310 | BUF_MEM *buf = NULL; | |
311 | ||
312 | if (ctx != NULL | |
313 | && out != NULL | |
ece9304c RL |
314 | && OSSL_ENCODER_CTX_get_encoder(ctx) != NULL |
315 | && OSSL_ENCODER_to_bio(ctx, out) | |
cdb16632 RL |
316 | && BIO_get_mem_ptr(out, &buf) > 0) { |
317 | ret = buf->length; | |
318 | ||
319 | if (pp != NULL) { | |
320 | if (*pp == NULL) { | |
321 | *pp = (unsigned char *)buf->data; | |
322 | buf->length = 0; | |
323 | buf->data = NULL; | |
324 | } else { | |
325 | memcpy(*pp, buf->data, ret); | |
326 | *pp += ret; | |
327 | } | |
328 | } | |
329 | } | |
330 | BIO_free(out); | |
ece9304c | 331 | OSSL_ENCODER_CTX_free(ctx); |
cdb16632 RL |
332 | } |
333 | ||
0f113f3e MC |
334 | return ret; |
335 | } | |
336 | ||
337 | /* | |
338 | * The following are equivalents but which return RSA and DSA keys | |
52664f50 | 339 | */ |
cf1b7d96 | 340 | #ifndef OPENSSL_NO_RSA |
0f113f3e MC |
341 | RSA *d2i_RSA_PUBKEY(RSA **a, const unsigned char **pp, long length) |
342 | { | |
343 | EVP_PKEY *pkey; | |
344 | RSA *key; | |
345 | const unsigned char *q; | |
12a765a5 | 346 | |
0f113f3e MC |
347 | q = *pp; |
348 | pkey = d2i_PUBKEY(NULL, &q, length); | |
12a765a5 | 349 | if (pkey == NULL) |
0f113f3e MC |
350 | return NULL; |
351 | key = EVP_PKEY_get1_RSA(pkey); | |
352 | EVP_PKEY_free(pkey); | |
12a765a5 | 353 | if (key == NULL) |
0f113f3e MC |
354 | return NULL; |
355 | *pp = q; | |
12a765a5 | 356 | if (a != NULL) { |
0f113f3e MC |
357 | RSA_free(*a); |
358 | *a = key; | |
359 | } | |
360 | return key; | |
361 | } | |
52664f50 | 362 | |
9fdcc21f | 363 | int i2d_RSA_PUBKEY(const RSA *a, unsigned char **pp) |
0f113f3e MC |
364 | { |
365 | EVP_PKEY *pktmp; | |
366 | int ret; | |
367 | if (!a) | |
368 | return 0; | |
369 | pktmp = EVP_PKEY_new(); | |
90945fa3 | 370 | if (pktmp == NULL) { |
0f113f3e | 371 | ASN1err(ASN1_F_I2D_RSA_PUBKEY, ERR_R_MALLOC_FAILURE); |
157997f0 | 372 | return -1; |
0f113f3e | 373 | } |
9fdcc21f | 374 | (void)EVP_PKEY_assign_RSA(pktmp, (RSA *)a); |
0f113f3e | 375 | ret = i2d_PUBKEY(pktmp, pp); |
9fdcc21f | 376 | pktmp->pkey.ptr = NULL; |
0f113f3e MC |
377 | EVP_PKEY_free(pktmp); |
378 | return ret; | |
379 | } | |
12aefe78 | 380 | #endif |
52664f50 | 381 | |
cf1b7d96 | 382 | #ifndef OPENSSL_NO_DSA |
0f113f3e MC |
383 | DSA *d2i_DSA_PUBKEY(DSA **a, const unsigned char **pp, long length) |
384 | { | |
385 | EVP_PKEY *pkey; | |
386 | DSA *key; | |
387 | const unsigned char *q; | |
12a765a5 | 388 | |
0f113f3e MC |
389 | q = *pp; |
390 | pkey = d2i_PUBKEY(NULL, &q, length); | |
12a765a5 | 391 | if (pkey == NULL) |
0f113f3e MC |
392 | return NULL; |
393 | key = EVP_PKEY_get1_DSA(pkey); | |
394 | EVP_PKEY_free(pkey); | |
12a765a5 | 395 | if (key == NULL) |
0f113f3e MC |
396 | return NULL; |
397 | *pp = q; | |
12a765a5 | 398 | if (a != NULL) { |
0f113f3e MC |
399 | DSA_free(*a); |
400 | *a = key; | |
401 | } | |
402 | return key; | |
403 | } | |
52664f50 | 404 | |
9fdcc21f | 405 | int i2d_DSA_PUBKEY(const DSA *a, unsigned char **pp) |
0f113f3e MC |
406 | { |
407 | EVP_PKEY *pktmp; | |
408 | int ret; | |
409 | if (!a) | |
410 | return 0; | |
411 | pktmp = EVP_PKEY_new(); | |
90945fa3 | 412 | if (pktmp == NULL) { |
0f113f3e | 413 | ASN1err(ASN1_F_I2D_DSA_PUBKEY, ERR_R_MALLOC_FAILURE); |
157997f0 | 414 | return -1; |
0f113f3e | 415 | } |
9fdcc21f | 416 | (void)EVP_PKEY_assign_DSA(pktmp, (DSA *)a); |
0f113f3e | 417 | ret = i2d_PUBKEY(pktmp, pp); |
9fdcc21f | 418 | pktmp->pkey.ptr = NULL; |
0f113f3e MC |
419 | EVP_PKEY_free(pktmp); |
420 | return ret; | |
421 | } | |
4d94ae00 BM |
422 | #endif |
423 | ||
14a7cfb3 | 424 | #ifndef OPENSSL_NO_EC |
6343829a | 425 | EC_KEY *d2i_EC_PUBKEY(EC_KEY **a, const unsigned char **pp, long length) |
0f113f3e MC |
426 | { |
427 | EVP_PKEY *pkey; | |
428 | EC_KEY *key; | |
429 | const unsigned char *q; | |
12a765a5 | 430 | |
0f113f3e MC |
431 | q = *pp; |
432 | pkey = d2i_PUBKEY(NULL, &q, length); | |
12a765a5 | 433 | if (pkey == NULL) |
26a7d938 | 434 | return NULL; |
0f113f3e MC |
435 | key = EVP_PKEY_get1_EC_KEY(pkey); |
436 | EVP_PKEY_free(pkey); | |
12a765a5 | 437 | if (key == NULL) |
26a7d938 | 438 | return NULL; |
0f113f3e | 439 | *pp = q; |
12a765a5 | 440 | if (a != NULL) { |
0f113f3e MC |
441 | EC_KEY_free(*a); |
442 | *a = key; | |
443 | } | |
26a7d938 | 444 | return key; |
0f113f3e | 445 | } |
4d94ae00 | 446 | |
9fdcc21f | 447 | int i2d_EC_PUBKEY(const EC_KEY *a, unsigned char **pp) |
0f113f3e MC |
448 | { |
449 | EVP_PKEY *pktmp; | |
450 | int ret; | |
12a765a5 RS |
451 | |
452 | if (a == NULL) | |
26a7d938 | 453 | return 0; |
0f113f3e MC |
454 | if ((pktmp = EVP_PKEY_new()) == NULL) { |
455 | ASN1err(ASN1_F_I2D_EC_PUBKEY, ERR_R_MALLOC_FAILURE); | |
157997f0 | 456 | return -1; |
0f113f3e | 457 | } |
9fdcc21f | 458 | (void)EVP_PKEY_assign_EC_KEY(pktmp, (EC_KEY *)a); |
0f113f3e | 459 | ret = i2d_PUBKEY(pktmp, pp); |
9fdcc21f | 460 | pktmp->pkey.ptr = NULL; |
0f113f3e | 461 | EVP_PKEY_free(pktmp); |
26a7d938 | 462 | return ret; |
0f113f3e | 463 | } |
12aefe78 | 464 | #endif |
448be743 DSH |
465 | |
466 | int X509_PUBKEY_set0_param(X509_PUBKEY *pub, ASN1_OBJECT *aobj, | |
0f113f3e MC |
467 | int ptype, void *pval, |
468 | unsigned char *penc, int penclen) | |
469 | { | |
470 | if (!X509_ALGOR_set0(pub->algor, aobj, ptype, pval)) | |
471 | return 0; | |
472 | if (penc) { | |
b548a1f1 | 473 | OPENSSL_free(pub->public_key->data); |
0f113f3e MC |
474 | pub->public_key->data = penc; |
475 | pub->public_key->length = penclen; | |
476 | /* Set number of unused bits to zero */ | |
477 | pub->public_key->flags &= ~(ASN1_STRING_FLAG_BITS_LEFT | 0x07); | |
478 | pub->public_key->flags |= ASN1_STRING_FLAG_BITS_LEFT; | |
479 | } | |
480 | return 1; | |
481 | } | |
448be743 DSH |
482 | |
483 | int X509_PUBKEY_get0_param(ASN1_OBJECT **ppkalg, | |
0f113f3e | 484 | const unsigned char **pk, int *ppklen, |
7674e923 | 485 | X509_ALGOR **pa, const X509_PUBKEY *pub) |
0f113f3e MC |
486 | { |
487 | if (ppkalg) | |
488 | *ppkalg = pub->algor->algorithm; | |
489 | if (pk) { | |
490 | *pk = pub->public_key->data; | |
491 | *ppklen = pub->public_key->length; | |
492 | } | |
493 | if (pa) | |
494 | *pa = pub->algor; | |
495 | return 1; | |
496 | } | |
29fa0a1a DSH |
497 | |
498 | ASN1_BIT_STRING *X509_get0_pubkey_bitstr(const X509 *x) | |
499 | { | |
500 | if (x == NULL) | |
501 | return NULL; | |
502 | return x->cert_info.key->public_key; | |
503 | } | |
93f99b68 DDO |
504 | |
505 | /* Returns 1 for equal, 0, for non-equal, < 0 on error */ | |
506 | int X509_PUBKEY_eq(const X509_PUBKEY *a, const X509_PUBKEY *b) | |
507 | { | |
508 | X509_ALGOR *algA, *algB; | |
509 | EVP_PKEY *pA, *pB; | |
510 | ||
511 | if (a == b) | |
512 | return 1; | |
513 | if (a == NULL || b == NULL) | |
514 | return 0; | |
515 | if (!X509_PUBKEY_get0_param(NULL, NULL, NULL, &algA, a) || algA == NULL | |
516 | || !X509_PUBKEY_get0_param(NULL, NULL, NULL, &algB, b) || algB == NULL) | |
517 | return -2; | |
518 | if (X509_ALGOR_cmp(algA, algB) != 0) | |
519 | return 0; | |
520 | if ((pA = X509_PUBKEY_get0(a)) == NULL | |
521 | || (pB = X509_PUBKEY_get0(b)) == NULL) | |
522 | return -2; | |
c74aaa39 | 523 | return EVP_PKEY_eq(pA, pB); |
93f99b68 | 524 | } |
22b81444 RL |
525 | |
526 | int X509_PUBKEY_get0_libctx(OPENSSL_CTX **plibctx, const char **ppropq, | |
527 | const X509_PUBKEY *key) | |
528 | { | |
529 | if (plibctx) | |
530 | *plibctx = key->libctx; | |
531 | if (ppropq) | |
532 | *ppropq = key->propq; | |
533 | return 1; | |
534 | } |