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>
63 #ifndef OPENSSL_NO_RSA
64 #include <openssl/rsa.h>
66 #ifndef OPENSSL_NO_DSA
67 #include <openssl/dsa.h>
70 /* Minor tweak to operation: free up EVP_PKEY */
71 static int pubkey_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
74 if (operation == ASN1_OP_FREE_POST)
76 X509_PUBKEY *pubkey = (X509_PUBKEY *)*pval;
77 EVP_PKEY_free(pubkey->pkey);
82 ASN1_SEQUENCE_cb(X509_PUBKEY, pubkey_cb) = {
83 ASN1_SIMPLE(X509_PUBKEY, algor, X509_ALGOR),
84 ASN1_SIMPLE(X509_PUBKEY, public_key, ASN1_BIT_STRING)
85 } ASN1_SEQUENCE_END_cb(X509_PUBKEY, X509_PUBKEY)
87 IMPLEMENT_ASN1_FUNCTIONS(X509_PUBKEY)
89 int X509_PUBKEY_set(X509_PUBKEY **x, EVP_PKEY *pkey)
92 const EVP_PKEY_ASN1_METHOD *meth;
94 if (x == NULL) return(0);
96 if ((pk=X509_PUBKEY_new()) == NULL) goto error;
98 meth = EVP_PKEY_ASN1_find(pkey->type);
102 if (meth->pub_encode)
104 if (!meth->pub_encode(pk, pkey))
106 X509err(X509_F_X509_PUBKEY_SET,
107 X509_R_PUBLIC_KEY_ENCODE_ERROR);
113 X509err(X509_F_X509_PUBKEY_SET,
114 X509_R_METHOD_NOT_SUPPORTED);
120 X509err(X509_F_X509_PUBKEY_SET,X509_R_UNSUPPORTED_ALGORITHM);
125 X509_PUBKEY_free(*x);
131 if (pk != NULL) X509_PUBKEY_free(pk);
135 EVP_PKEY *X509_PUBKEY_get(X509_PUBKEY *key)
138 const EVP_PKEY_ASN1_METHOD *meth;
140 if (key == NULL) goto error;
142 if (key->pkey != NULL)
144 CRYPTO_add(&key->pkey->references, 1, CRYPTO_LOCK_EVP_PKEY);
148 if (key->public_key == NULL) goto error;
150 if ((ret = EVP_PKEY_new()) == NULL)
152 X509err(X509_F_X509_PUBKEY_GET, ERR_R_MALLOC_FAILURE);
156 meth = EVP_PKEY_ASN1_find(OBJ_obj2nid(key->algor->algorithm));
160 if (meth->pub_decode)
162 if (!meth->pub_decode(ret, key))
164 X509err(X509_F_X509_PUBKEY_GET,
165 X509_R_PUBLIC_KEY_DECODE_ERROR);
171 X509err(X509_F_X509_PUBKEY_GET,
172 X509_R_METHOD_NOT_SUPPORTED);
178 X509err(X509_F_X509_PUBKEY_GET,X509_R_UNSUPPORTED_ALGORITHM);
183 CRYPTO_add(&ret->references, 1, CRYPTO_LOCK_EVP_PKEY);
193 /* Now two pseudo ASN1 routines that take an EVP_PKEY structure
194 * and encode or decode as X509_PUBKEY
197 EVP_PKEY *d2i_PUBKEY(EVP_PKEY **a, const unsigned char **pp,
202 xpk = d2i_X509_PUBKEY(NULL, pp, length);
203 if(!xpk) return NULL;
204 pktmp = X509_PUBKEY_get(xpk);
205 X509_PUBKEY_free(xpk);
206 if(!pktmp) return NULL;
215 int i2d_PUBKEY(EVP_PKEY *a, unsigned char **pp)
217 X509_PUBKEY *xpk=NULL;
220 if(!X509_PUBKEY_set(&xpk, a)) return 0;
221 ret = i2d_X509_PUBKEY(xpk, pp);
222 X509_PUBKEY_free(xpk);
226 /* The following are equivalents but which return RSA and DSA
229 #ifndef OPENSSL_NO_RSA
230 RSA *d2i_RSA_PUBKEY(RSA **a, const unsigned char **pp,
235 const unsigned char *q;
237 pkey = d2i_PUBKEY(NULL, &q, length);
238 if (!pkey) return NULL;
239 key = EVP_PKEY_get1_RSA(pkey);
241 if (!key) return NULL;
251 int i2d_RSA_PUBKEY(RSA *a, unsigned char **pp)
256 pktmp = EVP_PKEY_new();
259 ASN1err(ASN1_F_I2D_RSA_PUBKEY, ERR_R_MALLOC_FAILURE);
262 EVP_PKEY_set1_RSA(pktmp, a);
263 ret = i2d_PUBKEY(pktmp, pp);
264 EVP_PKEY_free(pktmp);
269 #ifndef OPENSSL_NO_DSA
270 DSA *d2i_DSA_PUBKEY(DSA **a, const unsigned char **pp,
275 const unsigned char *q;
277 pkey = d2i_PUBKEY(NULL, &q, length);
278 if (!pkey) return NULL;
279 key = EVP_PKEY_get1_DSA(pkey);
281 if (!key) return NULL;
291 int i2d_DSA_PUBKEY(DSA *a, unsigned char **pp)
296 pktmp = EVP_PKEY_new();
299 ASN1err(ASN1_F_I2D_DSA_PUBKEY, ERR_R_MALLOC_FAILURE);
302 EVP_PKEY_set1_DSA(pktmp, a);
303 ret = i2d_PUBKEY(pktmp, pp);
304 EVP_PKEY_free(pktmp);
309 #ifndef OPENSSL_NO_EC
310 EC_KEY *d2i_EC_PUBKEY(EC_KEY **a, const unsigned char **pp, long length)
314 const unsigned char *q;
316 pkey = d2i_PUBKEY(NULL, &q, length);
317 if (!pkey) return(NULL);
318 key = EVP_PKEY_get1_EC_KEY(pkey);
320 if (!key) return(NULL);
330 int i2d_EC_PUBKEY(EC_KEY *a, unsigned char **pp)
335 if ((pktmp = EVP_PKEY_new()) == NULL)
337 ASN1err(ASN1_F_I2D_EC_PUBKEY, ERR_R_MALLOC_FAILURE);
340 EVP_PKEY_set1_EC_KEY(pktmp, a);
341 ret = i2d_PUBKEY(pktmp, pp);
342 EVP_PKEY_free(pktmp);
347 int X509_PUBKEY_set0_param(X509_PUBKEY *pub, ASN1_OBJECT *aobj,
348 int ptype, void *pval,
349 unsigned char *penc, int penclen)
351 if (!X509_ALGOR_set0(pub->algor, aobj, ptype, pval))
355 if (pub->public_key->data)
356 OPENSSL_free(pub->public_key->data);
357 pub->public_key->data = penc;
358 pub->public_key->length = penclen;
359 /* Set number of unused bits to zero */
360 pub->public_key->flags&= ~(ASN1_STRING_FLAG_BITS_LEFT|0x07);
361 pub->public_key->flags|=ASN1_STRING_FLAG_BITS_LEFT;
366 int X509_PUBKEY_get0_param(ASN1_OBJECT **ppkalg,
367 const unsigned char **pk, int *ppklen,
372 *ppkalg = pub->algor->algorithm;
375 *pk = pub->public_key->data;
376 *ppklen = pub->public_key->length;