1 /* crypto/asn1/x_pubkey.c */
2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
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.
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).
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.
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
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)"
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
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.]
61 #include <openssl/asn1t.h>
62 #include <openssl/x509.h>
64 /* Minor tweak to operation: free up EVP_PKEY */
65 static int pubkey_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it)
67 if(operation == ASN1_OP_FREE_POST) {
68 X509_PUBKEY *pubkey = (X509_PUBKEY *)*pval;
69 EVP_PKEY_free(pubkey->pkey);
74 ASN1_SEQUENCE_cb(X509_PUBKEY, pubkey_cb) = {
75 ASN1_SIMPLE(X509_PUBKEY, algor, X509_ALGOR),
76 ASN1_SIMPLE(X509_PUBKEY, public_key, ASN1_BIT_STRING)
77 } ASN1_SEQUENCE_END_cb(X509_PUBKEY, X509_PUBKEY)
79 IMPLEMENT_ASN1_FUNCTIONS(X509_PUBKEY)
81 int X509_PUBKEY_set(X509_PUBKEY **x, EVP_PKEY *pkey)
86 unsigned char *s,*p = NULL;
89 if (x == NULL) return(0);
91 if ((pk=X509_PUBKEY_new()) == NULL) goto err;
94 /* set the algorithm id */
95 if ((o=OBJ_nid2obj(pkey->type)) == NULL) goto err;
96 ASN1_OBJECT_free(a->algorithm);
99 /* Set the parameter list */
100 if (!pkey->save_parameters || (pkey->type == EVP_PKEY_RSA))
102 if ((a->parameter == NULL) ||
103 (a->parameter->type != V_ASN1_NULL))
105 ASN1_TYPE_free(a->parameter);
106 if (!(a->parameter=ASN1_TYPE_new()))
108 X509err(X509_F_X509_PUBKEY_SET,ERR_R_MALLOC_FAILURE);
111 a->parameter->type=V_ASN1_NULL;
115 #ifndef OPENSSL_NO_DSA
116 if (pkey->type == EVP_PKEY_DSA)
123 ASN1_TYPE_free(a->parameter);
124 if ((i=i2d_DSAparams(dsa,NULL)) <= 0)
126 if (!(p=(unsigned char *)OPENSSL_malloc(i)))
128 X509err(X509_F_X509_PUBKEY_SET,ERR_R_MALLOC_FAILURE);
132 i2d_DSAparams(dsa,&pp);
133 if (!(a->parameter=ASN1_TYPE_new()))
136 X509err(X509_F_X509_PUBKEY_SET,ERR_R_MALLOC_FAILURE);
139 a->parameter->type=V_ASN1_SEQUENCE;
140 if (!(a->parameter->value.sequence=ASN1_STRING_new()))
143 X509err(X509_F_X509_PUBKEY_SET,ERR_R_MALLOC_FAILURE);
146 if (!ASN1_STRING_set(a->parameter->value.sequence,p,i))
149 X509err(X509_F_X509_PUBKEY_SET,ERR_R_MALLOC_FAILURE);
157 X509err(X509_F_X509_PUBKEY_SET,X509_R_UNSUPPORTED_ALGORITHM);
161 if ((i=i2d_PublicKey(pkey,NULL)) <= 0) goto err;
162 if ((s=(unsigned char *)OPENSSL_malloc(i+1)) == NULL)
164 X509err(X509_F_X509_PUBKEY_SET,ERR_R_MALLOC_FAILURE);
168 i2d_PublicKey(pkey,&p);
169 if (!M_ASN1_BIT_STRING_set(pk->public_key,s,i))
171 X509err(X509_F_X509_PUBKEY_SET,ERR_R_MALLOC_FAILURE);
174 /* Set number of unused bits to zero */
175 /* Set number of unused bits to zero */
176 pk->public_key->flags&= ~(ASN1_STRING_FLAG_BITS_LEFT|0x07);
177 pk->public_key->flags|=ASN1_STRING_FLAG_BITS_LEFT;
182 CRYPTO_add(&pkey->references,1,CRYPTO_LOCK_EVP_PKEY);
187 X509_PUBKEY_free(*x);
193 if (pk != NULL) X509_PUBKEY_free(pk);
197 EVP_PKEY *X509_PUBKEY_get(X509_PUBKEY *key)
203 #ifndef OPENSSL_NO_DSA
204 const unsigned char *cp;
208 if (key == NULL) goto err;
210 if (key->pkey != NULL)
212 CRYPTO_add(&key->pkey->references,1,CRYPTO_LOCK_EVP_PKEY);
216 if (key->public_key == NULL) goto err;
218 type=OBJ_obj2nid(key->algor->algorithm);
219 p=key->public_key->data;
220 j=key->public_key->length;
221 if ((ret=d2i_PublicKey(type,NULL,&p,(long)j)) == NULL)
223 X509err(X509_F_X509_PUBKEY_GET,X509_R_ERR_ASN1_LIB);
226 ret->save_parameters=0;
228 #ifndef OPENSSL_NO_DSA
230 if (ret->type == EVP_PKEY_DSA)
232 if (a->parameter && (a->parameter->type == V_ASN1_SEQUENCE))
234 ret->pkey.dsa->write_params=0;
235 cp=p=a->parameter->value.sequence->data;
236 j=a->parameter->value.sequence->length;
237 if (!d2i_DSAparams(&ret->pkey.dsa,&cp,(long)j))
240 ret->save_parameters=1;
244 CRYPTO_add(&ret->references,1,CRYPTO_LOCK_EVP_PKEY);
252 /* Now two pseudo ASN1 routines that take an EVP_PKEY structure
253 * and encode or decode as X509_PUBKEY
256 EVP_PKEY *d2i_PUBKEY(EVP_PKEY **a, unsigned char **pp,
261 xpk = d2i_X509_PUBKEY(NULL, pp, length);
262 if(!xpk) return NULL;
263 pktmp = X509_PUBKEY_get(xpk);
264 X509_PUBKEY_free(xpk);
265 if(!pktmp) return NULL;
273 int i2d_PUBKEY(EVP_PKEY *a, unsigned char **pp)
275 X509_PUBKEY *xpk=NULL;
278 if(!X509_PUBKEY_set(&xpk, a)) return 0;
279 ret = i2d_X509_PUBKEY(xpk, pp);
280 X509_PUBKEY_free(xpk);
284 /* The following are equivalents but which return RSA and DSA
287 #ifndef OPENSSL_NO_RSA
288 RSA *d2i_RSA_PUBKEY(RSA **a, unsigned char **pp,
295 pkey = d2i_PUBKEY(NULL, &q, length);
296 if(!pkey) return NULL;
297 key = EVP_PKEY_get1_RSA(pkey);
299 if(!key) return NULL;
308 int i2d_RSA_PUBKEY(RSA *a, unsigned char **pp)
313 pktmp = EVP_PKEY_new();
315 ASN1err(ASN1_F_I2D_RSA_PUBKEY, ERR_R_MALLOC_FAILURE);
318 EVP_PKEY_set1_RSA(pktmp, a);
319 ret = i2d_PUBKEY(pktmp, pp);
320 EVP_PKEY_free(pktmp);
325 #ifndef OPENSSL_NO_DSA
326 DSA *d2i_DSA_PUBKEY(DSA **a, unsigned char **pp,
333 pkey = d2i_PUBKEY(NULL, &q, length);
334 if(!pkey) return NULL;
335 key = EVP_PKEY_get1_DSA(pkey);
337 if(!key) return NULL;
346 int i2d_DSA_PUBKEY(DSA *a, unsigned char **pp)
351 pktmp = EVP_PKEY_new();
353 ASN1err(ASN1_F_I2D_DSA_PUBKEY, ERR_R_MALLOC_FAILURE);
356 EVP_PKEY_set1_DSA(pktmp, a);
357 ret = i2d_PUBKEY(pktmp, pp);
358 EVP_PKEY_free(pktmp);