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)
69 X509_PUBKEY *pubkey = (X509_PUBKEY *)*pval;
70 EVP_PKEY_free(pubkey->pkey);
75 ASN1_SEQUENCE_cb(X509_PUBKEY, pubkey_cb) = {
76 ASN1_SIMPLE(X509_PUBKEY, algor, X509_ALGOR),
77 ASN1_SIMPLE(X509_PUBKEY, public_key, ASN1_BIT_STRING)
78 } ASN1_SEQUENCE_END_cb(X509_PUBKEY, X509_PUBKEY)
80 IMPLEMENT_ASN1_FUNCTIONS(X509_PUBKEY)
82 int X509_PUBKEY_set(X509_PUBKEY **x, EVP_PKEY *pkey)
91 if (x == NULL) return(0);
93 if ((pk=X509_PUBKEY_new()) == NULL) goto err;
96 /* set the algorithm id */
97 if ((o=OBJ_nid2obj(pkey->type)) == NULL) goto err;
98 ASN1_OBJECT_free(a->algorithm);
101 /* Set the parameter list */
102 if (!pkey->save_parameters || (pkey->type == EVP_PKEY_RSA))
104 if ((a->parameter == NULL) ||
105 (a->parameter->type != V_ASN1_NULL))
107 ASN1_TYPE_free(a->parameter);
108 a->parameter=ASN1_TYPE_new();
109 a->parameter->type=V_ASN1_NULL;
112 #ifndef OPENSSL_NO_DSA
113 else if (pkey->type == EVP_PKEY_DSA)
120 ASN1_TYPE_free(a->parameter);
121 i=i2d_DSAparams(dsa,NULL);
122 p=(unsigned char *)OPENSSL_malloc(i);
124 i2d_DSAparams(dsa,&pp);
125 a->parameter=ASN1_TYPE_new();
126 a->parameter->type=V_ASN1_SEQUENCE;
127 a->parameter->value.sequence=ASN1_STRING_new();
128 ASN1_STRING_set(a->parameter->value.sequence,p,i);
132 #ifndef OPENSSL_NO_ECDSA
133 else if (pkey->type == EVP_PKEY_ECDSA)
138 ecdsa = pkey->pkey.ecdsa;
139 ecdsa->write_params=0;
140 ASN1_TYPE_free(a->parameter);
141 if ((i = i2d_ECDSAParameters(ecdsa, NULL)) == 0)
143 X509err(X509_F_X509_PUBKEY_SET, ERR_R_ECDSA_LIB);
146 if ((p = (unsigned char *) OPENSSL_malloc(i)) == NULL)
148 X509err(X509_F_X509_PUBKEY_SET, ERR_R_MALLOC_FAILURE);
152 if (!i2d_ECDSAParameters(ecdsa, &pp))
154 X509err(X509_F_X509_PUBKEY_SET, ERR_R_ECDSA_LIB);
158 if ((a->parameter = ASN1_TYPE_new()) == NULL)
160 X509err(X509_F_X509_PUBKEY_SET, ERR_R_ASN1_LIB);
164 a->parameter->type = V_ASN1_SEQUENCE;
165 if ((a->parameter->value.sequence = ASN1_STRING_new()) == NULL)
167 X509err(X509_F_X509_PUBKEY_SET, ERR_R_ASN1_LIB);
171 ASN1_STRING_set(a->parameter->value.sequence, p, i);
177 X509err(X509_F_X509_PUBKEY_SET,X509_R_UNSUPPORTED_ALGORITHM);
181 if ((i=i2d_PublicKey(pkey,NULL)) <= 0) goto err;
182 if ((s=(unsigned char *)OPENSSL_malloc(i+1)) == NULL) goto err;
184 i2d_PublicKey(pkey,&p);
185 if (!M_ASN1_BIT_STRING_set(pk->public_key,s,i)) goto err;
186 /* Set number of unused bits to zero */
187 pk->public_key->flags&= ~(ASN1_STRING_FLAG_BITS_LEFT|0x07);
188 pk->public_key->flags|=ASN1_STRING_FLAG_BITS_LEFT;
193 CRYPTO_add(&pkey->references,1,CRYPTO_LOCK_EVP_PKEY);
198 X509_PUBKEY_free(*x);
205 if (pk != NULL) X509_PUBKEY_free(pk);
209 EVP_PKEY *X509_PUBKEY_get(X509_PUBKEY *key)
215 #ifndef OPENSSL_NO_DSA
216 const unsigned char *cp;
220 if (key == NULL) goto err;
222 if (key->pkey != NULL)
224 CRYPTO_add(&key->pkey->references, 1, CRYPTO_LOCK_EVP_PKEY);
228 if (key->public_key == NULL) goto err;
230 type=OBJ_obj2nid(key->algor->algorithm);
231 if ((ret = EVP_PKEY_new()) == NULL)
233 X509err(X509_F_X509_PUBKEY_GET, ERR_R_MALLOC_FAILURE);
236 ret->type = EVP_PKEY_type(type);
238 /* the parameters must be extracted before the public key (ECDSA!) */
244 #ifndef OPENSSL_NO_DSA
245 else if (ret->type == EVP_PKEY_DSA)
247 if (a->parameter && (a->parameter->type == V_ASN1_SEQUENCE))
249 if ((ret->pkey.dsa = DSA_new()) == NULL)
251 X509err(X509_F_X509_PUBKEY_GET, ERR_R_MALLOC_FAILURE);
254 ret->pkey.dsa->write_params=0;
255 cp=p=a->parameter->value.sequence->data;
256 j=a->parameter->value.sequence->length;
257 if (!d2i_DSAparams(&ret->pkey.dsa, &cp, (long)j))
260 ret->save_parameters=1;
263 #ifndef OPENSSL_NO_ECDSA
264 else if (ret->type == EVP_PKEY_ECDSA)
266 if (a->parameter && (a->parameter->type == V_ASN1_SEQUENCE))
268 if ((ret->pkey.ecdsa= ECDSA_new()) == NULL)
270 X509err(X509_F_X509_PUBKEY_GET, ERR_R_MALLOC_FAILURE);
273 ret->pkey.ecdsa->write_params = 0;
274 cp = p = a->parameter->value.sequence->data;
275 j = a->parameter->value.sequence->length;
276 if (!d2i_ECDSAParameters(&ret->pkey.ecdsa, &cp, (long)j))
278 X509err(X509_F_X509_PUBKEY_GET, ERR_R_ECDSA_LIB);
282 ret->save_parameters = 1;
286 p=key->public_key->data;
287 j=key->public_key->length;
288 if ((ret = d2i_PublicKey(type, &ret, &p, (long)j)) == NULL)
290 X509err(X509_F_X509_PUBKEY_GET, X509_R_ERR_ASN1_LIB);
295 CRYPTO_add(&ret->references, 1, CRYPTO_LOCK_EVP_PKEY);
303 /* Now two pseudo ASN1 routines that take an EVP_PKEY structure
304 * and encode or decode as X509_PUBKEY
307 EVP_PKEY *d2i_PUBKEY(EVP_PKEY **a, unsigned char **pp,
312 xpk = d2i_X509_PUBKEY(NULL, pp, length);
313 if(!xpk) return NULL;
314 pktmp = X509_PUBKEY_get(xpk);
315 X509_PUBKEY_free(xpk);
316 if(!pktmp) return NULL;
325 int i2d_PUBKEY(EVP_PKEY *a, unsigned char **pp)
327 X509_PUBKEY *xpk=NULL;
330 if(!X509_PUBKEY_set(&xpk, a)) return 0;
331 ret = i2d_X509_PUBKEY(xpk, pp);
332 X509_PUBKEY_free(xpk);
336 /* The following are equivalents but which return RSA and DSA
339 #ifndef OPENSSL_NO_RSA
340 RSA *d2i_RSA_PUBKEY(RSA **a, unsigned char **pp,
347 pkey = d2i_PUBKEY(NULL, &q, length);
348 if (!pkey) return NULL;
349 key = EVP_PKEY_get1_RSA(pkey);
351 if (!key) return NULL;
361 int i2d_RSA_PUBKEY(RSA *a, unsigned char **pp)
366 pktmp = EVP_PKEY_new();
369 ASN1err(ASN1_F_I2D_RSA_PUBKEY, ERR_R_MALLOC_FAILURE);
372 EVP_PKEY_set1_RSA(pktmp, a);
373 ret = i2d_PUBKEY(pktmp, pp);
374 EVP_PKEY_free(pktmp);
379 #ifndef OPENSSL_NO_DSA
380 DSA *d2i_DSA_PUBKEY(DSA **a, unsigned char **pp,
387 pkey = d2i_PUBKEY(NULL, &q, length);
388 if (!pkey) return NULL;
389 key = EVP_PKEY_get1_DSA(pkey);
391 if (!key) return NULL;
401 int i2d_DSA_PUBKEY(DSA *a, unsigned char **pp)
406 pktmp = EVP_PKEY_new();
409 ASN1err(ASN1_F_I2D_DSA_PUBKEY, ERR_R_MALLOC_FAILURE);
412 EVP_PKEY_set1_DSA(pktmp, a);
413 ret = i2d_PUBKEY(pktmp, pp);
414 EVP_PKEY_free(pktmp);
419 #ifndef OPENSSL_NO_ECDSA
420 ECDSA *d2i_ECDSA_PUBKEY(ECDSA **a, unsigned char **pp, long length)
426 pkey = d2i_PUBKEY(NULL, &q, length);
427 if (!pkey) return(NULL);
428 key = EVP_PKEY_get1_ECDSA(pkey);
430 if (!key) return(NULL);
440 int i2d_ECDSA_PUBKEY(ECDSA *a, unsigned char **pp)
445 if ((pktmp = EVP_PKEY_new()) == NULL)
447 ASN1err(ASN1_F_I2D_ECDSA_PUBKEY, ERR_R_MALLOC_FAILURE);
450 EVP_PKEY_set1_ECDSA(pktmp, a);
451 ret = i2d_PUBKEY(pktmp, pp);
452 EVP_PKEY_free(pktmp);