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d02b48c6 | 1 | /* crypto/asn1/x_pubkey.c */ |
58964a49 | 2 | /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) |
d02b48c6 RE |
3 | * All rights reserved. |
4 | * | |
5 | * This package is an SSL implementation written | |
6 | * by Eric Young (eay@cryptsoft.com). | |
7 | * The implementation was written so as to conform with Netscapes SSL. | |
0f113f3e | 8 | * |
d02b48c6 RE |
9 | * This library is free for commercial and non-commercial use as long as |
10 | * the following conditions are aheared to. The following conditions | |
11 | * apply to all code found in this distribution, be it the RC4, RSA, | |
12 | * lhash, DES, etc., code; not just the SSL code. The SSL documentation | |
13 | * included with this distribution is covered by the same copyright terms | |
14 | * except that the holder is Tim Hudson (tjh@cryptsoft.com). | |
0f113f3e | 15 | * |
d02b48c6 RE |
16 | * Copyright remains Eric Young's, and as such any Copyright notices in |
17 | * the code are not to be removed. | |
18 | * If this package is used in a product, Eric Young should be given attribution | |
19 | * as the author of the parts of the library used. | |
20 | * This can be in the form of a textual message at program startup or | |
21 | * in documentation (online or textual) provided with the package. | |
0f113f3e | 22 | * |
d02b48c6 RE |
23 | * Redistribution and use in source and binary forms, with or without |
24 | * modification, are permitted provided that the following conditions | |
25 | * are met: | |
26 | * 1. Redistributions of source code must retain the copyright | |
27 | * notice, this list of conditions and the following disclaimer. | |
28 | * 2. Redistributions in binary form must reproduce the above copyright | |
29 | * notice, this list of conditions and the following disclaimer in the | |
30 | * documentation and/or other materials provided with the distribution. | |
31 | * 3. All advertising materials mentioning features or use of this software | |
32 | * must display the following acknowledgement: | |
33 | * "This product includes cryptographic software written by | |
34 | * Eric Young (eay@cryptsoft.com)" | |
35 | * The word 'cryptographic' can be left out if the rouines from the library | |
36 | * being used are not cryptographic related :-). | |
0f113f3e | 37 | * 4. If you include any Windows specific code (or a derivative thereof) from |
d02b48c6 RE |
38 | * the apps directory (application code) you must include an acknowledgement: |
39 | * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" | |
0f113f3e | 40 | * |
d02b48c6 RE |
41 | * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND |
42 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
43 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
44 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE | |
45 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
46 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
47 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
48 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
49 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
50 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
51 | * SUCH DAMAGE. | |
0f113f3e | 52 | * |
d02b48c6 RE |
53 | * The licence and distribution terms for any publically available version or |
54 | * derivative of this code cannot be changed. i.e. this code cannot simply be | |
55 | * copied and put under another distribution licence | |
56 | * [including the GNU Public Licence.] | |
57 | */ | |
58 | ||
59 | #include <stdio.h> | |
b39fc560 | 60 | #include "internal/cryptlib.h" |
9d6b1ce6 | 61 | #include <openssl/asn1t.h> |
f0e8ae72 | 62 | #include <openssl/x509.h> |
5fe736e5 | 63 | #include "internal/asn1_int.h" |
3eeaab4b | 64 | #ifndef OPENSSL_NO_RSA |
0f113f3e | 65 | # include <openssl/rsa.h> |
3eeaab4b NL |
66 | #endif |
67 | #ifndef OPENSSL_NO_DSA | |
0f113f3e | 68 | # include <openssl/dsa.h> |
3eeaab4b | 69 | #endif |
d02b48c6 | 70 | |
9d6b1ce6 | 71 | /* Minor tweak to operation: free up EVP_PKEY */ |
24484759 | 72 | static int pubkey_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it, |
0f113f3e MC |
73 | void *exarg) |
74 | { | |
75 | if (operation == ASN1_OP_FREE_POST) { | |
76 | X509_PUBKEY *pubkey = (X509_PUBKEY *)*pval; | |
77 | EVP_PKEY_free(pubkey->pkey); | |
78 | } | |
79 | return 1; | |
80 | } | |
d02b48c6 | 81 | |
9d6b1ce6 | 82 | ASN1_SEQUENCE_cb(X509_PUBKEY, pubkey_cb) = { |
0f113f3e MC |
83 | ASN1_SIMPLE(X509_PUBKEY, algor, X509_ALGOR), |
84 | ASN1_SIMPLE(X509_PUBKEY, public_key, ASN1_BIT_STRING) | |
d339187b | 85 | } ASN1_SEQUENCE_END_cb(X509_PUBKEY, X509_PUBKEY) |
d02b48c6 | 86 | |
9d6b1ce6 | 87 | IMPLEMENT_ASN1_FUNCTIONS(X509_PUBKEY) |
d02b48c6 | 88 | |
6b691a5c | 89 | int X509_PUBKEY_set(X509_PUBKEY **x, EVP_PKEY *pkey) |
0f113f3e MC |
90 | { |
91 | X509_PUBKEY *pk = NULL; | |
92 | ||
93 | if (x == NULL) | |
94 | return (0); | |
95 | ||
96 | if ((pk = X509_PUBKEY_new()) == NULL) | |
97 | goto error; | |
98 | ||
99 | if (pkey->ameth) { | |
100 | if (pkey->ameth->pub_encode) { | |
101 | if (!pkey->ameth->pub_encode(pk, pkey)) { | |
102 | X509err(X509_F_X509_PUBKEY_SET, | |
103 | X509_R_PUBLIC_KEY_ENCODE_ERROR); | |
104 | goto error; | |
105 | } | |
106 | } else { | |
107 | X509err(X509_F_X509_PUBKEY_SET, X509_R_METHOD_NOT_SUPPORTED); | |
108 | goto error; | |
109 | } | |
110 | } else { | |
111 | X509err(X509_F_X509_PUBKEY_SET, X509_R_UNSUPPORTED_ALGORITHM); | |
112 | goto error; | |
113 | } | |
114 | ||
222561fe | 115 | X509_PUBKEY_free(*x); |
0f113f3e | 116 | *x = pk; |
0f113f3e | 117 | return 1; |
222561fe | 118 | |
0f113f3e | 119 | error: |
222561fe | 120 | X509_PUBKEY_free(pk); |
0f113f3e MC |
121 | return 0; |
122 | } | |
d02b48c6 | 123 | |
c01ff880 | 124 | EVP_PKEY *X509_PUBKEY_get0(X509_PUBKEY *key) |
0f113f3e MC |
125 | { |
126 | EVP_PKEY *ret = NULL; | |
127 | ||
128 | if (key == NULL) | |
129 | goto error; | |
130 | ||
c01ff880 | 131 | if (key->pkey != NULL) |
0f113f3e | 132 | return key->pkey; |
0f113f3e MC |
133 | |
134 | if (key->public_key == NULL) | |
135 | goto error; | |
136 | ||
137 | if ((ret = EVP_PKEY_new()) == NULL) { | |
c01ff880 | 138 | X509err(X509_F_X509_PUBKEY_GET0, ERR_R_MALLOC_FAILURE); |
0f113f3e MC |
139 | goto error; |
140 | } | |
141 | ||
142 | if (!EVP_PKEY_set_type(ret, OBJ_obj2nid(key->algor->algorithm))) { | |
c01ff880 | 143 | X509err(X509_F_X509_PUBKEY_GET0, X509_R_UNSUPPORTED_ALGORITHM); |
0f113f3e MC |
144 | goto error; |
145 | } | |
146 | ||
147 | if (ret->ameth->pub_decode) { | |
148 | if (!ret->ameth->pub_decode(ret, key)) { | |
c01ff880 | 149 | X509err(X509_F_X509_PUBKEY_GET0, X509_R_PUBLIC_KEY_DECODE_ERROR); |
0f113f3e MC |
150 | goto error; |
151 | } | |
152 | } else { | |
c01ff880 | 153 | X509err(X509_F_X509_PUBKEY_GET0, X509_R_METHOD_NOT_SUPPORTED); |
0f113f3e MC |
154 | goto error; |
155 | } | |
156 | ||
157 | /* Check to see if another thread set key->pkey first */ | |
158 | CRYPTO_w_lock(CRYPTO_LOCK_EVP_PKEY); | |
159 | if (key->pkey) { | |
160 | CRYPTO_w_unlock(CRYPTO_LOCK_EVP_PKEY); | |
161 | EVP_PKEY_free(ret); | |
162 | ret = key->pkey; | |
163 | } else { | |
164 | key->pkey = ret; | |
165 | CRYPTO_w_unlock(CRYPTO_LOCK_EVP_PKEY); | |
166 | } | |
0f113f3e MC |
167 | |
168 | return ret; | |
169 | ||
170 | error: | |
c5ba2d99 | 171 | EVP_PKEY_free(ret); |
0f113f3e MC |
172 | return (NULL); |
173 | } | |
174 | ||
c01ff880 DSH |
175 | EVP_PKEY *X509_PUBKEY_get(X509_PUBKEY *key) |
176 | { | |
177 | EVP_PKEY *ret = X509_PUBKEY_get0(key); | |
178 | if (ret != NULL) | |
179 | EVP_PKEY_up_ref(ret); | |
180 | return ret; | |
181 | } | |
182 | ||
0f113f3e MC |
183 | /* |
184 | * Now two pseudo ASN1 routines that take an EVP_PKEY structure and encode or | |
185 | * decode as X509_PUBKEY | |
52664f50 DSH |
186 | */ |
187 | ||
0f113f3e MC |
188 | EVP_PKEY *d2i_PUBKEY(EVP_PKEY **a, const unsigned char **pp, long length) |
189 | { | |
190 | X509_PUBKEY *xpk; | |
191 | EVP_PKEY *pktmp; | |
a46c9789 KR |
192 | const unsigned char *q; |
193 | q = *pp; | |
194 | xpk = d2i_X509_PUBKEY(NULL, &q, length); | |
0f113f3e MC |
195 | if (!xpk) |
196 | return NULL; | |
197 | pktmp = X509_PUBKEY_get(xpk); | |
198 | X509_PUBKEY_free(xpk); | |
199 | if (!pktmp) | |
200 | return NULL; | |
a46c9789 | 201 | *pp = q; |
0f113f3e MC |
202 | if (a) { |
203 | EVP_PKEY_free(*a); | |
204 | *a = pktmp; | |
205 | } | |
206 | return pktmp; | |
207 | } | |
52664f50 DSH |
208 | |
209 | int i2d_PUBKEY(EVP_PKEY *a, unsigned char **pp) | |
0f113f3e MC |
210 | { |
211 | X509_PUBKEY *xpk = NULL; | |
212 | int ret; | |
213 | if (!a) | |
214 | return 0; | |
215 | if (!X509_PUBKEY_set(&xpk, a)) | |
216 | return 0; | |
217 | ret = i2d_X509_PUBKEY(xpk, pp); | |
218 | X509_PUBKEY_free(xpk); | |
219 | return ret; | |
220 | } | |
221 | ||
222 | /* | |
223 | * The following are equivalents but which return RSA and DSA keys | |
52664f50 | 224 | */ |
cf1b7d96 | 225 | #ifndef OPENSSL_NO_RSA |
0f113f3e MC |
226 | RSA *d2i_RSA_PUBKEY(RSA **a, const unsigned char **pp, long length) |
227 | { | |
228 | EVP_PKEY *pkey; | |
229 | RSA *key; | |
230 | const unsigned char *q; | |
231 | q = *pp; | |
232 | pkey = d2i_PUBKEY(NULL, &q, length); | |
233 | if (!pkey) | |
234 | return NULL; | |
235 | key = EVP_PKEY_get1_RSA(pkey); | |
236 | EVP_PKEY_free(pkey); | |
237 | if (!key) | |
238 | return NULL; | |
239 | *pp = q; | |
240 | if (a) { | |
241 | RSA_free(*a); | |
242 | *a = key; | |
243 | } | |
244 | return key; | |
245 | } | |
52664f50 DSH |
246 | |
247 | int i2d_RSA_PUBKEY(RSA *a, unsigned char **pp) | |
0f113f3e MC |
248 | { |
249 | EVP_PKEY *pktmp; | |
250 | int ret; | |
251 | if (!a) | |
252 | return 0; | |
253 | pktmp = EVP_PKEY_new(); | |
90945fa3 | 254 | if (pktmp == NULL) { |
0f113f3e MC |
255 | ASN1err(ASN1_F_I2D_RSA_PUBKEY, ERR_R_MALLOC_FAILURE); |
256 | return 0; | |
257 | } | |
258 | EVP_PKEY_set1_RSA(pktmp, a); | |
259 | ret = i2d_PUBKEY(pktmp, pp); | |
260 | EVP_PKEY_free(pktmp); | |
261 | return ret; | |
262 | } | |
12aefe78 | 263 | #endif |
52664f50 | 264 | |
cf1b7d96 | 265 | #ifndef OPENSSL_NO_DSA |
0f113f3e MC |
266 | DSA *d2i_DSA_PUBKEY(DSA **a, const unsigned char **pp, long length) |
267 | { | |
268 | EVP_PKEY *pkey; | |
269 | DSA *key; | |
270 | const unsigned char *q; | |
271 | q = *pp; | |
272 | pkey = d2i_PUBKEY(NULL, &q, length); | |
273 | if (!pkey) | |
274 | return NULL; | |
275 | key = EVP_PKEY_get1_DSA(pkey); | |
276 | EVP_PKEY_free(pkey); | |
277 | if (!key) | |
278 | return NULL; | |
279 | *pp = q; | |
280 | if (a) { | |
281 | DSA_free(*a); | |
282 | *a = key; | |
283 | } | |
284 | return key; | |
285 | } | |
52664f50 DSH |
286 | |
287 | int i2d_DSA_PUBKEY(DSA *a, unsigned char **pp) | |
0f113f3e MC |
288 | { |
289 | EVP_PKEY *pktmp; | |
290 | int ret; | |
291 | if (!a) | |
292 | return 0; | |
293 | pktmp = EVP_PKEY_new(); | |
90945fa3 | 294 | if (pktmp == NULL) { |
0f113f3e MC |
295 | ASN1err(ASN1_F_I2D_DSA_PUBKEY, ERR_R_MALLOC_FAILURE); |
296 | return 0; | |
297 | } | |
298 | EVP_PKEY_set1_DSA(pktmp, a); | |
299 | ret = i2d_PUBKEY(pktmp, pp); | |
300 | EVP_PKEY_free(pktmp); | |
301 | return ret; | |
302 | } | |
4d94ae00 BM |
303 | #endif |
304 | ||
14a7cfb3 | 305 | #ifndef OPENSSL_NO_EC |
6343829a | 306 | EC_KEY *d2i_EC_PUBKEY(EC_KEY **a, const unsigned char **pp, long length) |
0f113f3e MC |
307 | { |
308 | EVP_PKEY *pkey; | |
309 | EC_KEY *key; | |
310 | const unsigned char *q; | |
311 | q = *pp; | |
312 | pkey = d2i_PUBKEY(NULL, &q, length); | |
313 | if (!pkey) | |
314 | return (NULL); | |
315 | key = EVP_PKEY_get1_EC_KEY(pkey); | |
316 | EVP_PKEY_free(pkey); | |
317 | if (!key) | |
318 | return (NULL); | |
319 | *pp = q; | |
320 | if (a) { | |
321 | EC_KEY_free(*a); | |
322 | *a = key; | |
323 | } | |
324 | return (key); | |
325 | } | |
4d94ae00 | 326 | |
14a7cfb3 | 327 | int i2d_EC_PUBKEY(EC_KEY *a, unsigned char **pp) |
0f113f3e MC |
328 | { |
329 | EVP_PKEY *pktmp; | |
330 | int ret; | |
331 | if (!a) | |
332 | return (0); | |
333 | if ((pktmp = EVP_PKEY_new()) == NULL) { | |
334 | ASN1err(ASN1_F_I2D_EC_PUBKEY, ERR_R_MALLOC_FAILURE); | |
335 | return (0); | |
336 | } | |
337 | EVP_PKEY_set1_EC_KEY(pktmp, a); | |
338 | ret = i2d_PUBKEY(pktmp, pp); | |
339 | EVP_PKEY_free(pktmp); | |
340 | return (ret); | |
341 | } | |
12aefe78 | 342 | #endif |
448be743 DSH |
343 | |
344 | int X509_PUBKEY_set0_param(X509_PUBKEY *pub, ASN1_OBJECT *aobj, | |
0f113f3e MC |
345 | int ptype, void *pval, |
346 | unsigned char *penc, int penclen) | |
347 | { | |
348 | if (!X509_ALGOR_set0(pub->algor, aobj, ptype, pval)) | |
349 | return 0; | |
350 | if (penc) { | |
b548a1f1 | 351 | OPENSSL_free(pub->public_key->data); |
0f113f3e MC |
352 | pub->public_key->data = penc; |
353 | pub->public_key->length = penclen; | |
354 | /* Set number of unused bits to zero */ | |
355 | pub->public_key->flags &= ~(ASN1_STRING_FLAG_BITS_LEFT | 0x07); | |
356 | pub->public_key->flags |= ASN1_STRING_FLAG_BITS_LEFT; | |
357 | } | |
358 | return 1; | |
359 | } | |
448be743 DSH |
360 | |
361 | int X509_PUBKEY_get0_param(ASN1_OBJECT **ppkalg, | |
0f113f3e MC |
362 | const unsigned char **pk, int *ppklen, |
363 | X509_ALGOR **pa, X509_PUBKEY *pub) | |
364 | { | |
365 | if (ppkalg) | |
366 | *ppkalg = pub->algor->algorithm; | |
367 | if (pk) { | |
368 | *pk = pub->public_key->data; | |
369 | *ppklen = pub->public_key->length; | |
370 | } | |
371 | if (pa) | |
372 | *pa = pub->algor; | |
373 | return 1; | |
374 | } |