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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. | |
8 | * | |
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). | |
15 | * | |
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. | |
22 | * | |
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 :-). | |
37 | * 4. If you include any Windows specific code (or a derivative thereof) from | |
38 | * the apps directory (application code) you must include an acknowledgement: | |
39 | * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" | |
40 | * | |
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. | |
52 | * | |
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> | |
60 | #include "cryptlib.h" | |
ec577822 | 61 | #include <openssl/asn1_mac.h> |
f0e8ae72 | 62 | #include <openssl/x509.h> |
d02b48c6 | 63 | |
6b691a5c | 64 | int i2d_X509_PUBKEY(X509_PUBKEY *a, unsigned char **pp) |
d02b48c6 RE |
65 | { |
66 | M_ASN1_I2D_vars(a); | |
67 | ||
68 | M_ASN1_I2D_len(a->algor, i2d_X509_ALGOR); | |
69 | M_ASN1_I2D_len(a->public_key, i2d_ASN1_BIT_STRING); | |
70 | ||
71 | M_ASN1_I2D_seq_total(); | |
72 | ||
73 | M_ASN1_I2D_put(a->algor, i2d_X509_ALGOR); | |
74 | M_ASN1_I2D_put(a->public_key, i2d_ASN1_BIT_STRING); | |
75 | ||
76 | M_ASN1_I2D_finish(); | |
77 | } | |
78 | ||
6b691a5c UM |
79 | X509_PUBKEY *d2i_X509_PUBKEY(X509_PUBKEY **a, unsigned char **pp, |
80 | long length) | |
d02b48c6 RE |
81 | { |
82 | M_ASN1_D2I_vars(a,X509_PUBKEY *,X509_PUBKEY_new); | |
83 | ||
84 | M_ASN1_D2I_Init(); | |
85 | M_ASN1_D2I_start_sequence(); | |
86 | M_ASN1_D2I_get(ret->algor,d2i_X509_ALGOR); | |
87 | M_ASN1_D2I_get(ret->public_key,d2i_ASN1_BIT_STRING); | |
88 | if (ret->pkey != NULL) | |
89 | { | |
90 | EVP_PKEY_free(ret->pkey); | |
91 | ret->pkey=NULL; | |
92 | } | |
93 | M_ASN1_D2I_Finish(a,X509_PUBKEY_free,ASN1_F_D2I_X509_PUBKEY); | |
94 | } | |
95 | ||
6b691a5c | 96 | X509_PUBKEY *X509_PUBKEY_new(void) |
d02b48c6 RE |
97 | { |
98 | X509_PUBKEY *ret=NULL; | |
dfeab068 | 99 | ASN1_CTX c; |
d02b48c6 RE |
100 | |
101 | M_ASN1_New_Malloc(ret,X509_PUBKEY); | |
102 | M_ASN1_New(ret->algor,X509_ALGOR_new); | |
08e9c1af | 103 | M_ASN1_New(ret->public_key,M_ASN1_BIT_STRING_new); |
d02b48c6 RE |
104 | ret->pkey=NULL; |
105 | return(ret); | |
106 | M_ASN1_New_Error(ASN1_F_X509_PUBKEY_NEW); | |
107 | } | |
108 | ||
6b691a5c | 109 | void X509_PUBKEY_free(X509_PUBKEY *a) |
d02b48c6 RE |
110 | { |
111 | if (a == NULL) return; | |
112 | X509_ALGOR_free(a->algor); | |
08e9c1af | 113 | M_ASN1_BIT_STRING_free(a->public_key); |
d02b48c6 | 114 | if (a->pkey != NULL) EVP_PKEY_free(a->pkey); |
26a3a48d | 115 | OPENSSL_free(a); |
d02b48c6 RE |
116 | } |
117 | ||
6b691a5c | 118 | int X509_PUBKEY_set(X509_PUBKEY **x, EVP_PKEY *pkey) |
d02b48c6 RE |
119 | { |
120 | int ok=0; | |
121 | X509_PUBKEY *pk; | |
122 | X509_ALGOR *a; | |
123 | ASN1_OBJECT *o; | |
124 | unsigned char *s,*p; | |
125 | int i; | |
126 | ||
127 | if (x == NULL) return(0); | |
128 | ||
129 | if ((pk=X509_PUBKEY_new()) == NULL) goto err; | |
130 | a=pk->algor; | |
131 | ||
132 | /* set the algorithm id */ | |
133 | if ((o=OBJ_nid2obj(pkey->type)) == NULL) goto err; | |
134 | ASN1_OBJECT_free(a->algorithm); | |
135 | a->algorithm=o; | |
136 | ||
137 | /* Set the parameter list */ | |
138 | if (!pkey->save_parameters || (pkey->type == EVP_PKEY_RSA)) | |
139 | { | |
140 | if ((a->parameter == NULL) || | |
141 | (a->parameter->type != V_ASN1_NULL)) | |
142 | { | |
143 | ASN1_TYPE_free(a->parameter); | |
144 | a->parameter=ASN1_TYPE_new(); | |
145 | a->parameter->type=V_ASN1_NULL; | |
146 | } | |
147 | } | |
148 | else | |
149 | #ifndef NO_DSA | |
150 | if (pkey->type == EVP_PKEY_DSA) | |
151 | { | |
152 | unsigned char *pp; | |
153 | DSA *dsa; | |
154 | ||
155 | dsa=pkey->pkey.dsa; | |
156 | dsa->write_params=0; | |
157 | ASN1_TYPE_free(a->parameter); | |
158 | i=i2d_DSAparams(dsa,NULL); | |
26a3a48d | 159 | p=(unsigned char *)OPENSSL_malloc(i); |
d02b48c6 RE |
160 | pp=p; |
161 | i2d_DSAparams(dsa,&pp); | |
162 | a->parameter=ASN1_TYPE_new(); | |
163 | a->parameter->type=V_ASN1_SEQUENCE; | |
164 | a->parameter->value.sequence=ASN1_STRING_new(); | |
165 | ASN1_STRING_set(a->parameter->value.sequence,p,i); | |
26a3a48d | 166 | OPENSSL_free(p); |
d02b48c6 RE |
167 | } |
168 | else | |
169 | #endif | |
170 | { | |
171 | X509err(X509_F_X509_PUBKEY_SET,X509_R_UNSUPPORTED_ALGORITHM); | |
172 | goto err; | |
173 | } | |
174 | ||
ad65ce75 | 175 | if ((i=i2d_PublicKey(pkey,NULL)) <= 0) goto err; |
26a3a48d | 176 | if ((s=(unsigned char *)OPENSSL_malloc(i+1)) == NULL) goto err; |
d02b48c6 RE |
177 | p=s; |
178 | i2d_PublicKey(pkey,&p); | |
08e9c1af | 179 | if (!M_ASN1_BIT_STRING_set(pk->public_key,s,i)) goto err; |
c35f549e DSH |
180 | /* Set number of unused bits to zero */ |
181 | pk->public_key->flags&= ~(ASN1_STRING_FLAG_BITS_LEFT|0x07); | |
182 | pk->public_key->flags|=ASN1_STRING_FLAG_BITS_LEFT; | |
183 | ||
26a3a48d | 184 | OPENSSL_free(s); |
d02b48c6 | 185 | |
e77066ea | 186 | #if 0 |
d02b48c6 RE |
187 | CRYPTO_add(&pkey->references,1,CRYPTO_LOCK_EVP_PKEY); |
188 | pk->pkey=pkey; | |
e77066ea | 189 | #endif |
d02b48c6 RE |
190 | |
191 | if (*x != NULL) | |
192 | X509_PUBKEY_free(*x); | |
193 | ||
194 | *x=pk; | |
195 | pk=NULL; | |
196 | ||
197 | ok=1; | |
198 | err: | |
199 | if (pk != NULL) X509_PUBKEY_free(pk); | |
200 | return(ok); | |
201 | } | |
202 | ||
6b691a5c | 203 | EVP_PKEY *X509_PUBKEY_get(X509_PUBKEY *key) |
d02b48c6 RE |
204 | { |
205 | EVP_PKEY *ret=NULL; | |
206 | long j; | |
207 | int type; | |
208 | unsigned char *p; | |
a4aba800 | 209 | const unsigned char *cp; |
58964a49 | 210 | #ifndef NO_DSA |
d02b48c6 | 211 | X509_ALGOR *a; |
58964a49 RE |
212 | #endif |
213 | ||
214 | if (key == NULL) goto err; | |
215 | ||
cdbb8c2f BL |
216 | if (key->pkey != NULL) |
217 | { | |
218 | CRYPTO_add(&key->pkey->references,1,CRYPTO_LOCK_EVP_PKEY); | |
219 | return(key->pkey); | |
220 | } | |
58964a49 RE |
221 | |
222 | if (key->public_key == NULL) goto err; | |
d02b48c6 | 223 | |
d02b48c6 RE |
224 | type=OBJ_obj2nid(key->algor->algorithm); |
225 | p=key->public_key->data; | |
226 | j=key->public_key->length; | |
227 | if ((ret=d2i_PublicKey(type,NULL,&p,(long)j)) == NULL) | |
228 | { | |
229 | X509err(X509_F_X509_PUBKEY_GET,X509_R_ERR_ASN1_LIB); | |
230 | goto err; | |
231 | } | |
232 | ret->save_parameters=0; | |
233 | ||
234 | #ifndef NO_DSA | |
235 | a=key->algor; | |
236 | if (ret->type == EVP_PKEY_DSA) | |
237 | { | |
238 | if (a->parameter->type == V_ASN1_SEQUENCE) | |
239 | { | |
240 | ret->pkey.dsa->write_params=0; | |
a4aba800 | 241 | cp=p=a->parameter->value.sequence->data; |
d02b48c6 | 242 | j=a->parameter->value.sequence->length; |
a4aba800 | 243 | if (!d2i_DSAparams(&ret->pkey.dsa,&cp,(long)j)) |
d02b48c6 RE |
244 | goto err; |
245 | } | |
246 | ret->save_parameters=1; | |
247 | } | |
248 | #endif | |
249 | key->pkey=ret; | |
cdbb8c2f | 250 | CRYPTO_add(&ret->references,1,CRYPTO_LOCK_EVP_PKEY); |
d02b48c6 RE |
251 | return(ret); |
252 | err: | |
253 | if (ret != NULL) | |
254 | EVP_PKEY_free(ret); | |
255 | return(NULL); | |
256 | } | |
257 | ||
52664f50 DSH |
258 | /* Now two pseudo ASN1 routines that take an EVP_PKEY structure |
259 | * and encode or decode as X509_PUBKEY | |
260 | */ | |
261 | ||
262 | EVP_PKEY *d2i_PUBKEY(EVP_PKEY **a, unsigned char **pp, | |
263 | long length) | |
264 | { | |
265 | X509_PUBKEY *xpk; | |
266 | EVP_PKEY *pktmp; | |
267 | xpk = d2i_X509_PUBKEY(NULL, pp, length); | |
268 | if(!xpk) return NULL; | |
269 | pktmp = X509_PUBKEY_get(xpk); | |
270 | X509_PUBKEY_free(xpk); | |
271 | if(!pktmp) return NULL; | |
272 | if(a) { | |
273 | EVP_PKEY_free(*a); | |
274 | *a = pktmp; | |
275 | } | |
276 | return pktmp; | |
277 | } | |
278 | ||
279 | int i2d_PUBKEY(EVP_PKEY *a, unsigned char **pp) | |
280 | { | |
281 | X509_PUBKEY *xpk=NULL; | |
282 | int ret; | |
283 | if(!a) return 0; | |
284 | if(!X509_PUBKEY_set(&xpk, a)) return 0; | |
285 | ret = i2d_X509_PUBKEY(xpk, pp); | |
286 | X509_PUBKEY_free(xpk); | |
287 | return ret; | |
288 | } | |
289 | ||
290 | /* The following are equivalents but which return RSA and DSA | |
291 | * keys | |
292 | */ | |
12aefe78 | 293 | #ifndef NO_RSA |
52664f50 DSH |
294 | RSA *d2i_RSA_PUBKEY(RSA **a, unsigned char **pp, |
295 | long length) | |
296 | { | |
297 | EVP_PKEY *pkey; | |
298 | RSA *key; | |
299 | unsigned char *q; | |
300 | q = *pp; | |
301 | pkey = d2i_PUBKEY(NULL, &q, length); | |
302 | if(!pkey) return NULL; | |
c7cb16a8 | 303 | key = EVP_PKEY_get1_RSA(pkey); |
52664f50 DSH |
304 | EVP_PKEY_free(pkey); |
305 | if(!key) return NULL; | |
306 | *pp = q; | |
307 | if(a) { | |
308 | RSA_free(*a); | |
309 | *a = key; | |
310 | } | |
311 | return key; | |
312 | } | |
313 | ||
314 | int i2d_RSA_PUBKEY(RSA *a, unsigned char **pp) | |
315 | { | |
316 | EVP_PKEY *pktmp; | |
317 | int ret; | |
318 | if(!a) return 0; | |
319 | pktmp = EVP_PKEY_new(); | |
320 | if(!pktmp) { | |
321 | ASN1err(ASN1_F_I2D_RSA_PUBKEY, ERR_R_MALLOC_FAILURE); | |
322 | return 0; | |
323 | } | |
c7cb16a8 | 324 | EVP_PKEY_set1_RSA(pktmp, a); |
52664f50 DSH |
325 | ret = i2d_PUBKEY(pktmp, pp); |
326 | EVP_PKEY_free(pktmp); | |
327 | return ret; | |
328 | } | |
12aefe78 | 329 | #endif |
52664f50 | 330 | |
12aefe78 | 331 | #ifndef NO_DSA |
52664f50 DSH |
332 | DSA *d2i_DSA_PUBKEY(DSA **a, unsigned char **pp, |
333 | long length) | |
334 | { | |
335 | EVP_PKEY *pkey; | |
336 | DSA *key; | |
337 | unsigned char *q; | |
338 | q = *pp; | |
339 | pkey = d2i_PUBKEY(NULL, &q, length); | |
340 | if(!pkey) return NULL; | |
c7cb16a8 | 341 | key = EVP_PKEY_get1_DSA(pkey); |
52664f50 DSH |
342 | EVP_PKEY_free(pkey); |
343 | if(!key) return NULL; | |
344 | *pp = q; | |
345 | if(a) { | |
346 | DSA_free(*a); | |
347 | *a = key; | |
348 | } | |
349 | return key; | |
350 | } | |
351 | ||
352 | int i2d_DSA_PUBKEY(DSA *a, unsigned char **pp) | |
353 | { | |
354 | EVP_PKEY *pktmp; | |
355 | int ret; | |
356 | if(!a) return 0; | |
357 | pktmp = EVP_PKEY_new(); | |
358 | if(!pktmp) { | |
359 | ASN1err(ASN1_F_I2D_DSA_PUBKEY, ERR_R_MALLOC_FAILURE); | |
360 | return 0; | |
361 | } | |
c7cb16a8 | 362 | EVP_PKEY_set1_DSA(pktmp, a); |
52664f50 DSH |
363 | ret = i2d_PUBKEY(pktmp, pp); |
364 | EVP_PKEY_free(pktmp); | |
365 | return ret; | |
366 | } | |
12aefe78 | 367 | #endif |