]>
Commit | Line | Data |
---|---|---|
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" |
3aeb9348 | 64 | #include "internal/evp_int.h" |
3eeaab4b | 65 | #ifndef OPENSSL_NO_RSA |
0f113f3e | 66 | # include <openssl/rsa.h> |
3eeaab4b NL |
67 | #endif |
68 | #ifndef OPENSSL_NO_DSA | |
0f113f3e | 69 | # include <openssl/dsa.h> |
3eeaab4b | 70 | #endif |
d02b48c6 | 71 | |
9d6b1ce6 | 72 | /* Minor tweak to operation: free up EVP_PKEY */ |
24484759 | 73 | static int pubkey_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it, |
0f113f3e MC |
74 | void *exarg) |
75 | { | |
76 | if (operation == ASN1_OP_FREE_POST) { | |
77 | X509_PUBKEY *pubkey = (X509_PUBKEY *)*pval; | |
78 | EVP_PKEY_free(pubkey->pkey); | |
79 | } | |
80 | return 1; | |
81 | } | |
d02b48c6 | 82 | |
9d6b1ce6 | 83 | ASN1_SEQUENCE_cb(X509_PUBKEY, pubkey_cb) = { |
0f113f3e MC |
84 | ASN1_SIMPLE(X509_PUBKEY, algor, X509_ALGOR), |
85 | ASN1_SIMPLE(X509_PUBKEY, public_key, ASN1_BIT_STRING) | |
d339187b | 86 | } ASN1_SEQUENCE_END_cb(X509_PUBKEY, X509_PUBKEY) |
d02b48c6 | 87 | |
9d6b1ce6 | 88 | IMPLEMENT_ASN1_FUNCTIONS(X509_PUBKEY) |
d02b48c6 | 89 | |
6b691a5c | 90 | int X509_PUBKEY_set(X509_PUBKEY **x, EVP_PKEY *pkey) |
0f113f3e MC |
91 | { |
92 | X509_PUBKEY *pk = NULL; | |
93 | ||
94 | if (x == NULL) | |
95 | return (0); | |
96 | ||
97 | if ((pk = X509_PUBKEY_new()) == NULL) | |
98 | goto error; | |
99 | ||
100 | if (pkey->ameth) { | |
101 | if (pkey->ameth->pub_encode) { | |
102 | if (!pkey->ameth->pub_encode(pk, pkey)) { | |
103 | X509err(X509_F_X509_PUBKEY_SET, | |
104 | X509_R_PUBLIC_KEY_ENCODE_ERROR); | |
105 | goto error; | |
106 | } | |
107 | } else { | |
108 | X509err(X509_F_X509_PUBKEY_SET, X509_R_METHOD_NOT_SUPPORTED); | |
109 | goto error; | |
110 | } | |
111 | } else { | |
112 | X509err(X509_F_X509_PUBKEY_SET, X509_R_UNSUPPORTED_ALGORITHM); | |
113 | goto error; | |
114 | } | |
115 | ||
222561fe | 116 | X509_PUBKEY_free(*x); |
0f113f3e | 117 | *x = pk; |
0f113f3e | 118 | return 1; |
222561fe | 119 | |
0f113f3e | 120 | error: |
222561fe | 121 | X509_PUBKEY_free(pk); |
0f113f3e MC |
122 | return 0; |
123 | } | |
d02b48c6 | 124 | |
c01ff880 | 125 | EVP_PKEY *X509_PUBKEY_get0(X509_PUBKEY *key) |
0f113f3e MC |
126 | { |
127 | EVP_PKEY *ret = NULL; | |
128 | ||
129 | if (key == NULL) | |
130 | goto error; | |
131 | ||
c01ff880 | 132 | if (key->pkey != NULL) |
0f113f3e | 133 | return key->pkey; |
0f113f3e MC |
134 | |
135 | if (key->public_key == NULL) | |
136 | goto error; | |
137 | ||
138 | if ((ret = EVP_PKEY_new()) == NULL) { | |
c01ff880 | 139 | X509err(X509_F_X509_PUBKEY_GET0, ERR_R_MALLOC_FAILURE); |
0f113f3e MC |
140 | goto error; |
141 | } | |
142 | ||
143 | if (!EVP_PKEY_set_type(ret, OBJ_obj2nid(key->algor->algorithm))) { | |
c01ff880 | 144 | X509err(X509_F_X509_PUBKEY_GET0, X509_R_UNSUPPORTED_ALGORITHM); |
0f113f3e MC |
145 | goto error; |
146 | } | |
147 | ||
148 | if (ret->ameth->pub_decode) { | |
149 | if (!ret->ameth->pub_decode(ret, key)) { | |
c01ff880 | 150 | X509err(X509_F_X509_PUBKEY_GET0, X509_R_PUBLIC_KEY_DECODE_ERROR); |
0f113f3e MC |
151 | goto error; |
152 | } | |
153 | } else { | |
c01ff880 | 154 | X509err(X509_F_X509_PUBKEY_GET0, X509_R_METHOD_NOT_SUPPORTED); |
0f113f3e MC |
155 | goto error; |
156 | } | |
157 | ||
158 | /* Check to see if another thread set key->pkey first */ | |
159 | CRYPTO_w_lock(CRYPTO_LOCK_EVP_PKEY); | |
160 | if (key->pkey) { | |
161 | CRYPTO_w_unlock(CRYPTO_LOCK_EVP_PKEY); | |
162 | EVP_PKEY_free(ret); | |
163 | ret = key->pkey; | |
164 | } else { | |
165 | key->pkey = ret; | |
166 | CRYPTO_w_unlock(CRYPTO_LOCK_EVP_PKEY); | |
167 | } | |
0f113f3e MC |
168 | |
169 | return ret; | |
170 | ||
171 | error: | |
c5ba2d99 | 172 | EVP_PKEY_free(ret); |
0f113f3e MC |
173 | return (NULL); |
174 | } | |
175 | ||
c01ff880 DSH |
176 | EVP_PKEY *X509_PUBKEY_get(X509_PUBKEY *key) |
177 | { | |
178 | EVP_PKEY *ret = X509_PUBKEY_get0(key); | |
179 | if (ret != NULL) | |
180 | EVP_PKEY_up_ref(ret); | |
181 | return ret; | |
182 | } | |
183 | ||
0f113f3e MC |
184 | /* |
185 | * Now two pseudo ASN1 routines that take an EVP_PKEY structure and encode or | |
186 | * decode as X509_PUBKEY | |
52664f50 DSH |
187 | */ |
188 | ||
0f113f3e MC |
189 | EVP_PKEY *d2i_PUBKEY(EVP_PKEY **a, const unsigned char **pp, long length) |
190 | { | |
191 | X509_PUBKEY *xpk; | |
192 | EVP_PKEY *pktmp; | |
a46c9789 KR |
193 | const unsigned char *q; |
194 | q = *pp; | |
195 | xpk = d2i_X509_PUBKEY(NULL, &q, length); | |
0f113f3e MC |
196 | if (!xpk) |
197 | return NULL; | |
198 | pktmp = X509_PUBKEY_get(xpk); | |
199 | X509_PUBKEY_free(xpk); | |
200 | if (!pktmp) | |
201 | return NULL; | |
a46c9789 | 202 | *pp = q; |
0f113f3e MC |
203 | if (a) { |
204 | EVP_PKEY_free(*a); | |
205 | *a = pktmp; | |
206 | } | |
207 | return pktmp; | |
208 | } | |
52664f50 DSH |
209 | |
210 | int i2d_PUBKEY(EVP_PKEY *a, unsigned char **pp) | |
0f113f3e MC |
211 | { |
212 | X509_PUBKEY *xpk = NULL; | |
213 | int ret; | |
214 | if (!a) | |
215 | return 0; | |
216 | if (!X509_PUBKEY_set(&xpk, a)) | |
217 | return 0; | |
218 | ret = i2d_X509_PUBKEY(xpk, pp); | |
219 | X509_PUBKEY_free(xpk); | |
220 | return ret; | |
221 | } | |
222 | ||
223 | /* | |
224 | * The following are equivalents but which return RSA and DSA keys | |
52664f50 | 225 | */ |
cf1b7d96 | 226 | #ifndef OPENSSL_NO_RSA |
0f113f3e MC |
227 | RSA *d2i_RSA_PUBKEY(RSA **a, const unsigned char **pp, long length) |
228 | { | |
229 | EVP_PKEY *pkey; | |
230 | RSA *key; | |
231 | const unsigned char *q; | |
232 | q = *pp; | |
233 | pkey = d2i_PUBKEY(NULL, &q, length); | |
234 | if (!pkey) | |
235 | return NULL; | |
236 | key = EVP_PKEY_get1_RSA(pkey); | |
237 | EVP_PKEY_free(pkey); | |
238 | if (!key) | |
239 | return NULL; | |
240 | *pp = q; | |
241 | if (a) { | |
242 | RSA_free(*a); | |
243 | *a = key; | |
244 | } | |
245 | return key; | |
246 | } | |
52664f50 DSH |
247 | |
248 | int i2d_RSA_PUBKEY(RSA *a, unsigned char **pp) | |
0f113f3e MC |
249 | { |
250 | EVP_PKEY *pktmp; | |
251 | int ret; | |
252 | if (!a) | |
253 | return 0; | |
254 | pktmp = EVP_PKEY_new(); | |
90945fa3 | 255 | if (pktmp == NULL) { |
0f113f3e MC |
256 | ASN1err(ASN1_F_I2D_RSA_PUBKEY, ERR_R_MALLOC_FAILURE); |
257 | return 0; | |
258 | } | |
259 | EVP_PKEY_set1_RSA(pktmp, a); | |
260 | ret = i2d_PUBKEY(pktmp, pp); | |
261 | EVP_PKEY_free(pktmp); | |
262 | return ret; | |
263 | } | |
12aefe78 | 264 | #endif |
52664f50 | 265 | |
cf1b7d96 | 266 | #ifndef OPENSSL_NO_DSA |
0f113f3e MC |
267 | DSA *d2i_DSA_PUBKEY(DSA **a, const unsigned char **pp, long length) |
268 | { | |
269 | EVP_PKEY *pkey; | |
270 | DSA *key; | |
271 | const unsigned char *q; | |
272 | q = *pp; | |
273 | pkey = d2i_PUBKEY(NULL, &q, length); | |
274 | if (!pkey) | |
275 | return NULL; | |
276 | key = EVP_PKEY_get1_DSA(pkey); | |
277 | EVP_PKEY_free(pkey); | |
278 | if (!key) | |
279 | return NULL; | |
280 | *pp = q; | |
281 | if (a) { | |
282 | DSA_free(*a); | |
283 | *a = key; | |
284 | } | |
285 | return key; | |
286 | } | |
52664f50 DSH |
287 | |
288 | int i2d_DSA_PUBKEY(DSA *a, unsigned char **pp) | |
0f113f3e MC |
289 | { |
290 | EVP_PKEY *pktmp; | |
291 | int ret; | |
292 | if (!a) | |
293 | return 0; | |
294 | pktmp = EVP_PKEY_new(); | |
90945fa3 | 295 | if (pktmp == NULL) { |
0f113f3e MC |
296 | ASN1err(ASN1_F_I2D_DSA_PUBKEY, ERR_R_MALLOC_FAILURE); |
297 | return 0; | |
298 | } | |
299 | EVP_PKEY_set1_DSA(pktmp, a); | |
300 | ret = i2d_PUBKEY(pktmp, pp); | |
301 | EVP_PKEY_free(pktmp); | |
302 | return ret; | |
303 | } | |
4d94ae00 BM |
304 | #endif |
305 | ||
14a7cfb3 | 306 | #ifndef OPENSSL_NO_EC |
6343829a | 307 | EC_KEY *d2i_EC_PUBKEY(EC_KEY **a, const unsigned char **pp, long length) |
0f113f3e MC |
308 | { |
309 | EVP_PKEY *pkey; | |
310 | EC_KEY *key; | |
311 | const unsigned char *q; | |
312 | q = *pp; | |
313 | pkey = d2i_PUBKEY(NULL, &q, length); | |
314 | if (!pkey) | |
315 | return (NULL); | |
316 | key = EVP_PKEY_get1_EC_KEY(pkey); | |
317 | EVP_PKEY_free(pkey); | |
318 | if (!key) | |
319 | return (NULL); | |
320 | *pp = q; | |
321 | if (a) { | |
322 | EC_KEY_free(*a); | |
323 | *a = key; | |
324 | } | |
325 | return (key); | |
326 | } | |
4d94ae00 | 327 | |
14a7cfb3 | 328 | int i2d_EC_PUBKEY(EC_KEY *a, unsigned char **pp) |
0f113f3e MC |
329 | { |
330 | EVP_PKEY *pktmp; | |
331 | int ret; | |
332 | if (!a) | |
333 | return (0); | |
334 | if ((pktmp = EVP_PKEY_new()) == NULL) { | |
335 | ASN1err(ASN1_F_I2D_EC_PUBKEY, ERR_R_MALLOC_FAILURE); | |
336 | return (0); | |
337 | } | |
338 | EVP_PKEY_set1_EC_KEY(pktmp, a); | |
339 | ret = i2d_PUBKEY(pktmp, pp); | |
340 | EVP_PKEY_free(pktmp); | |
341 | return (ret); | |
342 | } | |
12aefe78 | 343 | #endif |
448be743 DSH |
344 | |
345 | int X509_PUBKEY_set0_param(X509_PUBKEY *pub, ASN1_OBJECT *aobj, | |
0f113f3e MC |
346 | int ptype, void *pval, |
347 | unsigned char *penc, int penclen) | |
348 | { | |
349 | if (!X509_ALGOR_set0(pub->algor, aobj, ptype, pval)) | |
350 | return 0; | |
351 | if (penc) { | |
b548a1f1 | 352 | OPENSSL_free(pub->public_key->data); |
0f113f3e MC |
353 | pub->public_key->data = penc; |
354 | pub->public_key->length = penclen; | |
355 | /* Set number of unused bits to zero */ | |
356 | pub->public_key->flags &= ~(ASN1_STRING_FLAG_BITS_LEFT | 0x07); | |
357 | pub->public_key->flags |= ASN1_STRING_FLAG_BITS_LEFT; | |
358 | } | |
359 | return 1; | |
360 | } | |
448be743 DSH |
361 | |
362 | int X509_PUBKEY_get0_param(ASN1_OBJECT **ppkalg, | |
0f113f3e MC |
363 | const unsigned char **pk, int *ppklen, |
364 | X509_ALGOR **pa, X509_PUBKEY *pub) | |
365 | { | |
366 | if (ppkalg) | |
367 | *ppkalg = pub->algor->algorithm; | |
368 | if (pk) { | |
369 | *pk = pub->public_key->data; | |
370 | *ppklen = pub->public_key->length; | |
371 | } | |
372 | if (pa) | |
373 | *pa = pub->algor; | |
374 | return 1; | |
375 | } |