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.]
60 #include "internal/cryptlib.h"
61 #include <openssl/asn1t.h>
62 #include <openssl/x509.h>
63 #include "internal/asn1_int.h"
64 #include "internal/evp_int.h"
65 #ifndef OPENSSL_NO_RSA
66 # include <openssl/rsa.h>
68 #ifndef OPENSSL_NO_DSA
69 # include <openssl/dsa.h>
72 /* Minor tweak to operation: free up EVP_PKEY */
73 static int pubkey_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
76 if (operation == ASN1_OP_FREE_POST) {
77 X509_PUBKEY *pubkey = (X509_PUBKEY *)*pval;
78 EVP_PKEY_free(pubkey->pkey);
83 ASN1_SEQUENCE_cb(X509_PUBKEY, pubkey_cb) = {
84 ASN1_SIMPLE(X509_PUBKEY, algor, X509_ALGOR),
85 ASN1_SIMPLE(X509_PUBKEY, public_key, ASN1_BIT_STRING)
86 } ASN1_SEQUENCE_END_cb(X509_PUBKEY, X509_PUBKEY)
88 IMPLEMENT_ASN1_FUNCTIONS(X509_PUBKEY)
90 int X509_PUBKEY_set(X509_PUBKEY **x, EVP_PKEY *pkey)
92 X509_PUBKEY *pk = NULL;
97 if ((pk = X509_PUBKEY_new()) == NULL)
101 if (pkey->ameth->pub_encode) {
102 if (!pkey->ameth->pub_encode(pk, pkey)) {
103 X509err(X509_F_X509_PUBKEY_SET,
104 X509_R_PUBLIC_KEY_ENCODE_ERROR);
108 X509err(X509_F_X509_PUBKEY_SET, X509_R_METHOD_NOT_SUPPORTED);
112 X509err(X509_F_X509_PUBKEY_SET, X509_R_UNSUPPORTED_ALGORITHM);
116 X509_PUBKEY_free(*x);
121 X509_PUBKEY_free(pk);
125 EVP_PKEY *X509_PUBKEY_get0(X509_PUBKEY *key)
127 EVP_PKEY *ret = NULL;
132 if (key->pkey != NULL)
135 if (key->public_key == NULL)
138 if ((ret = EVP_PKEY_new()) == NULL) {
139 X509err(X509_F_X509_PUBKEY_GET0, ERR_R_MALLOC_FAILURE);
143 if (!EVP_PKEY_set_type(ret, OBJ_obj2nid(key->algor->algorithm))) {
144 X509err(X509_F_X509_PUBKEY_GET0, X509_R_UNSUPPORTED_ALGORITHM);
148 if (ret->ameth->pub_decode) {
149 if (!ret->ameth->pub_decode(ret, key)) {
150 X509err(X509_F_X509_PUBKEY_GET0, X509_R_PUBLIC_KEY_DECODE_ERROR);
154 X509err(X509_F_X509_PUBKEY_GET0, X509_R_METHOD_NOT_SUPPORTED);
158 /* Check to see if another thread set key->pkey first */
159 CRYPTO_w_lock(CRYPTO_LOCK_EVP_PKEY);
161 CRYPTO_w_unlock(CRYPTO_LOCK_EVP_PKEY);
166 CRYPTO_w_unlock(CRYPTO_LOCK_EVP_PKEY);
176 EVP_PKEY *X509_PUBKEY_get(X509_PUBKEY *key)
178 EVP_PKEY *ret = X509_PUBKEY_get0(key);
180 EVP_PKEY_up_ref(ret);
185 * Now two pseudo ASN1 routines that take an EVP_PKEY structure and encode or
186 * decode as X509_PUBKEY
189 EVP_PKEY *d2i_PUBKEY(EVP_PKEY **a, const unsigned char **pp, long length)
193 const unsigned char *q;
195 xpk = d2i_X509_PUBKEY(NULL, &q, length);
198 pktmp = X509_PUBKEY_get(xpk);
199 X509_PUBKEY_free(xpk);
210 int i2d_PUBKEY(EVP_PKEY *a, unsigned char **pp)
212 X509_PUBKEY *xpk = NULL;
216 if (!X509_PUBKEY_set(&xpk, a))
218 ret = i2d_X509_PUBKEY(xpk, pp);
219 X509_PUBKEY_free(xpk);
224 * The following are equivalents but which return RSA and DSA keys
226 #ifndef OPENSSL_NO_RSA
227 RSA *d2i_RSA_PUBKEY(RSA **a, const unsigned char **pp, long length)
231 const unsigned char *q;
233 pkey = d2i_PUBKEY(NULL, &q, length);
236 key = EVP_PKEY_get1_RSA(pkey);
248 int i2d_RSA_PUBKEY(RSA *a, unsigned char **pp)
254 pktmp = EVP_PKEY_new();
256 ASN1err(ASN1_F_I2D_RSA_PUBKEY, ERR_R_MALLOC_FAILURE);
259 EVP_PKEY_set1_RSA(pktmp, a);
260 ret = i2d_PUBKEY(pktmp, pp);
261 EVP_PKEY_free(pktmp);
266 #ifndef OPENSSL_NO_DSA
267 DSA *d2i_DSA_PUBKEY(DSA **a, const unsigned char **pp, long length)
271 const unsigned char *q;
273 pkey = d2i_PUBKEY(NULL, &q, length);
276 key = EVP_PKEY_get1_DSA(pkey);
288 int i2d_DSA_PUBKEY(DSA *a, unsigned char **pp)
294 pktmp = EVP_PKEY_new();
296 ASN1err(ASN1_F_I2D_DSA_PUBKEY, ERR_R_MALLOC_FAILURE);
299 EVP_PKEY_set1_DSA(pktmp, a);
300 ret = i2d_PUBKEY(pktmp, pp);
301 EVP_PKEY_free(pktmp);
306 #ifndef OPENSSL_NO_EC
307 EC_KEY *d2i_EC_PUBKEY(EC_KEY **a, const unsigned char **pp, long length)
311 const unsigned char *q;
313 pkey = d2i_PUBKEY(NULL, &q, length);
316 key = EVP_PKEY_get1_EC_KEY(pkey);
328 int i2d_EC_PUBKEY(EC_KEY *a, unsigned char **pp)
334 if ((pktmp = EVP_PKEY_new()) == NULL) {
335 ASN1err(ASN1_F_I2D_EC_PUBKEY, ERR_R_MALLOC_FAILURE);
338 EVP_PKEY_set1_EC_KEY(pktmp, a);
339 ret = i2d_PUBKEY(pktmp, pp);
340 EVP_PKEY_free(pktmp);
345 int X509_PUBKEY_set0_param(X509_PUBKEY *pub, ASN1_OBJECT *aobj,
346 int ptype, void *pval,
347 unsigned char *penc, int penclen)
349 if (!X509_ALGOR_set0(pub->algor, aobj, ptype, pval))
352 OPENSSL_free(pub->public_key->data);
353 pub->public_key->data = penc;
354 pub->public_key->length = penclen;
355 /* Set number of unused bits to zero */
356 pub->public_key->flags &= ~(ASN1_STRING_FLAG_BITS_LEFT | 0x07);
357 pub->public_key->flags |= ASN1_STRING_FLAG_BITS_LEFT;
362 int X509_PUBKEY_get0_param(ASN1_OBJECT **ppkalg,
363 const unsigned char **pk, int *ppklen,
364 X509_ALGOR **pa, X509_PUBKEY *pub)
367 *ppkalg = pub->algor->algorithm;
369 *pk = pub->public_key->data;
370 *ppklen = pub->public_key->length;