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diff --git a/src/lib/libcrypto/asn1/x_pubkey.c b/src/lib/libcrypto/asn1/x_pubkey.c
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1/* crypto/asn1/x_pubkey.c */
2/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
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"
61#include <openssl/asn1_mac.h>
62#include <openssl/x509.h>
63
64int i2d_X509_PUBKEY(X509_PUBKEY *a, unsigned char **pp)
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
79X509_PUBKEY *d2i_X509_PUBKEY(X509_PUBKEY **a, unsigned char **pp,
80 long length)
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
96X509_PUBKEY *X509_PUBKEY_new(void)
97 {
98 X509_PUBKEY *ret=NULL;
99 ASN1_CTX c;
100
101 M_ASN1_New_Malloc(ret,X509_PUBKEY);
102 M_ASN1_New(ret->algor,X509_ALGOR_new);
103 M_ASN1_New(ret->public_key,M_ASN1_BIT_STRING_new);
104 ret->pkey=NULL;
105 return(ret);
106 M_ASN1_New_Error(ASN1_F_X509_PUBKEY_NEW);
107 }
108
109void X509_PUBKEY_free(X509_PUBKEY *a)
110 {
111 if (a == NULL) return;
112 X509_ALGOR_free(a->algor);
113 M_ASN1_BIT_STRING_free(a->public_key);
114 if (a->pkey != NULL) EVP_PKEY_free(a->pkey);
115 Free(a);
116 }
117
118int X509_PUBKEY_set(X509_PUBKEY **x, EVP_PKEY *pkey)
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);
159 p=(unsigned char *)Malloc(i);
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);
166 Free(p);
167 }
168 else
169#endif
170 {
171 X509err(X509_F_X509_PUBKEY_SET,X509_R_UNSUPPORTED_ALGORITHM);
172 goto err;
173 }
174
175 if ((i=i2d_PublicKey(pkey,NULL)) <= 0) goto err;
176 if ((s=(unsigned char *)Malloc(i+1)) == NULL) goto err;
177 p=s;
178 i2d_PublicKey(pkey,&p);
179 if (!M_ASN1_BIT_STRING_set(pk->public_key,s,i)) goto err;
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
184 Free(s);
185
186#if 0
187 CRYPTO_add(&pkey->references,1,CRYPTO_LOCK_EVP_PKEY);
188 pk->pkey=pkey;
189#endif
190
191 if (*x != NULL)
192 X509_PUBKEY_free(*x);
193
194 *x=pk;
195 pk=NULL;
196
197 ok=1;
198err:
199 if (pk != NULL) X509_PUBKEY_free(pk);
200 return(ok);
201 }
202
203EVP_PKEY *X509_PUBKEY_get(X509_PUBKEY *key)
204 {
205 EVP_PKEY *ret=NULL;
206 long j;
207 int type;
208 unsigned char *p;
209#ifndef NO_DSA
210 X509_ALGOR *a;
211#endif
212
213 if (key == NULL) goto err;
214
215 if (key->pkey != NULL)
216 {
217 CRYPTO_add(&key->pkey->references,1,CRYPTO_LOCK_EVP_PKEY);
218 return(key->pkey);
219 }
220
221 if (key->public_key == NULL) goto err;
222
223 type=OBJ_obj2nid(key->algor->algorithm);
224 p=key->public_key->data;
225 j=key->public_key->length;
226 if ((ret=d2i_PublicKey(type,NULL,&p,(long)j)) == NULL)
227 {
228 X509err(X509_F_X509_PUBKEY_GET,X509_R_ERR_ASN1_LIB);
229 goto err;
230 }
231 ret->save_parameters=0;
232
233#ifndef NO_DSA
234 a=key->algor;
235 if (ret->type == EVP_PKEY_DSA)
236 {
237 if (a->parameter->type == V_ASN1_SEQUENCE)
238 {
239 ret->pkey.dsa->write_params=0;
240 p=a->parameter->value.sequence->data;
241 j=a->parameter->value.sequence->length;
242 if (!d2i_DSAparams(&ret->pkey.dsa,&p,(long)j))
243 goto err;
244 }
245 ret->save_parameters=1;
246 }
247#endif
248 key->pkey=ret;
249 CRYPTO_add(&ret->references,1,CRYPTO_LOCK_EVP_PKEY);
250 return(ret);
251err:
252 if (ret != NULL)
253 EVP_PKEY_free(ret);
254 return(NULL);
255 }
256
257/* Now two pseudo ASN1 routines that take an EVP_PKEY structure
258 * and encode or decode as X509_PUBKEY
259 */
260
261EVP_PKEY *d2i_PUBKEY(EVP_PKEY **a, unsigned char **pp,
262 long length)
263{
264 X509_PUBKEY *xpk;
265 EVP_PKEY *pktmp;
266 xpk = d2i_X509_PUBKEY(NULL, pp, length);
267 if(!xpk) return NULL;
268 pktmp = X509_PUBKEY_get(xpk);
269 X509_PUBKEY_free(xpk);
270 if(!pktmp) return NULL;
271 if(a) {
272 EVP_PKEY_free(*a);
273 *a = pktmp;
274 }
275 return pktmp;
276}
277
278int i2d_PUBKEY(EVP_PKEY *a, unsigned char **pp)
279{
280 X509_PUBKEY *xpk=NULL;
281 int ret;
282 if(!a) return 0;
283 if(!X509_PUBKEY_set(&xpk, a)) return 0;
284 ret = i2d_X509_PUBKEY(xpk, pp);
285 X509_PUBKEY_free(xpk);
286 return ret;
287}
288
289/* The following are equivalents but which return RSA and DSA
290 * keys
291 */
292#ifndef NO_RSA
293RSA *d2i_RSA_PUBKEY(RSA **a, unsigned char **pp,
294 long length)
295{
296 EVP_PKEY *pkey;
297 RSA *key;
298 unsigned char *q;
299 q = *pp;
300 pkey = d2i_PUBKEY(NULL, &q, length);
301 if(!pkey) return NULL;
302 key = EVP_PKEY_get1_RSA(pkey);
303 EVP_PKEY_free(pkey);
304 if(!key) return NULL;
305 *pp = q;
306 if(a) {
307 RSA_free(*a);
308 *a = key;
309 }
310 return key;
311}
312
313int i2d_RSA_PUBKEY(RSA *a, unsigned char **pp)
314{
315 EVP_PKEY *pktmp;
316 int ret;
317 if(!a) return 0;
318 pktmp = EVP_PKEY_new();
319 if(!pktmp) {
320 ASN1err(ASN1_F_I2D_RSA_PUBKEY, ERR_R_MALLOC_FAILURE);
321 return 0;
322 }
323 EVP_PKEY_set1_RSA(pktmp, a);
324 ret = i2d_PUBKEY(pktmp, pp);
325 EVP_PKEY_free(pktmp);
326 return ret;
327}
328#endif
329
330#ifndef NO_DSA
331DSA *d2i_DSA_PUBKEY(DSA **a, unsigned char **pp,
332 long length)
333{
334 EVP_PKEY *pkey;
335 DSA *key;
336 unsigned char *q;
337 q = *pp;
338 pkey = d2i_PUBKEY(NULL, &q, length);
339 if(!pkey) return NULL;
340 key = EVP_PKEY_get1_DSA(pkey);
341 EVP_PKEY_free(pkey);
342 if(!key) return NULL;
343 *pp = q;
344 if(a) {
345 DSA_free(*a);
346 *a = key;
347 }
348 return key;
349}
350
351int i2d_DSA_PUBKEY(DSA *a, unsigned char **pp)
352{
353 EVP_PKEY *pktmp;
354 int ret;
355 if(!a) return 0;
356 pktmp = EVP_PKEY_new();
357 if(!pktmp) {
358 ASN1err(ASN1_F_I2D_DSA_PUBKEY, ERR_R_MALLOC_FAILURE);
359 return 0;
360 }
361 EVP_PKEY_set1_DSA(pktmp, a);
362 ret = i2d_PUBKEY(pktmp, pp);
363 EVP_PKEY_free(pktmp);
364 return ret;
365}
366#endif
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