1 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
4 * This package is an SSL implementation written
5 * by Eric Young (eay@cryptsoft.com).
6 * The implementation was written so as to conform with Netscapes SSL.
8 * This library is free for commercial and non-commercial use as long as
9 * the following conditions are aheared to. The following conditions
10 * apply to all code found in this distribution, be it the RC4, RSA,
11 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
12 * included with this distribution is covered by the same copyright terms
13 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15 * Copyright remains Eric Young's, and as such any Copyright notices in
16 * the code are not to be removed.
17 * If this package is used in a product, Eric Young should be given attribution
18 * as the author of the parts of the library used.
19 * This can be in the form of a textual message at program startup or
20 * in documentation (online or textual) provided with the package.
22 * Redistribution and use in source and binary forms, with or without
23 * modification, are permitted provided that the following conditions
25 * 1. Redistributions of source code must retain the copyright
26 * notice, this list of conditions and the following disclaimer.
27 * 2. Redistributions in binary form must reproduce the above copyright
28 * notice, this list of conditions and the following disclaimer in the
29 * documentation and/or other materials provided with the distribution.
30 * 3. All advertising materials mentioning features or use of this software
31 * must display the following acknowledgement:
32 * "This product includes cryptographic software written by
33 * Eric Young (eay@cryptsoft.com)"
34 * The word 'cryptographic' can be left out if the rouines from the library
35 * being used are not cryptographic related :-).
36 * 4. If you include any Windows specific code (or a derivative thereof) from
37 * the apps directory (application code) you must include an acknowledgement:
38 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
41 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
43 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
44 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
45 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
46 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
48 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
49 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
52 * The licence and distribution terms for any publically available version or
53 * derivative of this code cannot be changed. i.e. this code cannot simply be
54 * copied and put under another distribution licence
55 * [including the GNU Public Licence.]
59 #include "internal/cryptlib.h"
60 #include <openssl/asn1t.h>
61 #include <openssl/x509.h>
62 #include "internal/asn1_int.h"
63 #include "internal/evp_int.h"
64 #include "internal/x509_int.h"
65 #include <openssl/rsa.h>
66 #include <openssl/dsa.h>
68 struct X509_pubkey_st {
70 ASN1_BIT_STRING *public_key;
75 /* Minor tweak to operation: free up EVP_PKEY */
76 static int pubkey_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
79 if (operation == ASN1_OP_NEW_POST) {
80 X509_PUBKEY *pubkey = (X509_PUBKEY *)*pval;
81 pubkey->lock = CRYPTO_THREAD_lock_new();
82 if (pubkey->lock == NULL)
85 if (operation == ASN1_OP_FREE_POST) {
86 X509_PUBKEY *pubkey = (X509_PUBKEY *)*pval;
87 CRYPTO_THREAD_lock_free(pubkey->lock);
88 EVP_PKEY_free(pubkey->pkey);
93 ASN1_SEQUENCE_cb(X509_PUBKEY, pubkey_cb) = {
94 ASN1_SIMPLE(X509_PUBKEY, algor, X509_ALGOR),
95 ASN1_SIMPLE(X509_PUBKEY, public_key, ASN1_BIT_STRING)
96 } ASN1_SEQUENCE_END_cb(X509_PUBKEY, X509_PUBKEY)
98 IMPLEMENT_ASN1_FUNCTIONS(X509_PUBKEY)
100 int X509_PUBKEY_set(X509_PUBKEY **x, EVP_PKEY *pkey)
102 X509_PUBKEY *pk = NULL;
107 if ((pk = X509_PUBKEY_new()) == NULL)
111 if (pkey->ameth->pub_encode) {
112 if (!pkey->ameth->pub_encode(pk, pkey)) {
113 X509err(X509_F_X509_PUBKEY_SET,
114 X509_R_PUBLIC_KEY_ENCODE_ERROR);
118 X509err(X509_F_X509_PUBKEY_SET, X509_R_METHOD_NOT_SUPPORTED);
122 X509err(X509_F_X509_PUBKEY_SET, X509_R_UNSUPPORTED_ALGORITHM);
126 X509_PUBKEY_free(*x);
131 X509_PUBKEY_free(pk);
135 EVP_PKEY *X509_PUBKEY_get0(X509_PUBKEY *key)
137 EVP_PKEY *ret = NULL;
142 if (key->pkey != NULL)
145 if (key->public_key == NULL)
148 if ((ret = EVP_PKEY_new()) == NULL) {
149 X509err(X509_F_X509_PUBKEY_GET0, ERR_R_MALLOC_FAILURE);
153 if (!EVP_PKEY_set_type(ret, OBJ_obj2nid(key->algor->algorithm))) {
154 X509err(X509_F_X509_PUBKEY_GET0, X509_R_UNSUPPORTED_ALGORITHM);
158 if (ret->ameth->pub_decode) {
159 if (!ret->ameth->pub_decode(ret, key)) {
160 X509err(X509_F_X509_PUBKEY_GET0, X509_R_PUBLIC_KEY_DECODE_ERROR);
164 X509err(X509_F_X509_PUBKEY_GET0, X509_R_METHOD_NOT_SUPPORTED);
168 /* Check to see if another thread set key->pkey first */
169 CRYPTO_THREAD_write_lock(key->lock);
171 CRYPTO_THREAD_unlock(key->lock);
176 CRYPTO_THREAD_unlock(key->lock);
186 EVP_PKEY *X509_PUBKEY_get(X509_PUBKEY *key)
188 EVP_PKEY *ret = X509_PUBKEY_get0(key);
190 EVP_PKEY_up_ref(ret);
195 * Now two pseudo ASN1 routines that take an EVP_PKEY structure and encode or
196 * decode as X509_PUBKEY
199 EVP_PKEY *d2i_PUBKEY(EVP_PKEY **a, const unsigned char **pp, long length)
203 const unsigned char *q;
205 xpk = d2i_X509_PUBKEY(NULL, &q, length);
208 pktmp = X509_PUBKEY_get(xpk);
209 X509_PUBKEY_free(xpk);
220 int i2d_PUBKEY(EVP_PKEY *a, unsigned char **pp)
222 X509_PUBKEY *xpk = NULL;
226 if (!X509_PUBKEY_set(&xpk, a))
228 ret = i2d_X509_PUBKEY(xpk, pp);
229 X509_PUBKEY_free(xpk);
234 * The following are equivalents but which return RSA and DSA keys
236 #ifndef OPENSSL_NO_RSA
237 RSA *d2i_RSA_PUBKEY(RSA **a, const unsigned char **pp, long length)
241 const unsigned char *q;
243 pkey = d2i_PUBKEY(NULL, &q, length);
246 key = EVP_PKEY_get1_RSA(pkey);
258 int i2d_RSA_PUBKEY(RSA *a, unsigned char **pp)
264 pktmp = EVP_PKEY_new();
266 ASN1err(ASN1_F_I2D_RSA_PUBKEY, ERR_R_MALLOC_FAILURE);
269 EVP_PKEY_set1_RSA(pktmp, a);
270 ret = i2d_PUBKEY(pktmp, pp);
271 EVP_PKEY_free(pktmp);
276 #ifndef OPENSSL_NO_DSA
277 DSA *d2i_DSA_PUBKEY(DSA **a, const unsigned char **pp, long length)
281 const unsigned char *q;
283 pkey = d2i_PUBKEY(NULL, &q, length);
286 key = EVP_PKEY_get1_DSA(pkey);
298 int i2d_DSA_PUBKEY(DSA *a, unsigned char **pp)
304 pktmp = EVP_PKEY_new();
306 ASN1err(ASN1_F_I2D_DSA_PUBKEY, ERR_R_MALLOC_FAILURE);
309 EVP_PKEY_set1_DSA(pktmp, a);
310 ret = i2d_PUBKEY(pktmp, pp);
311 EVP_PKEY_free(pktmp);
316 #ifndef OPENSSL_NO_EC
317 EC_KEY *d2i_EC_PUBKEY(EC_KEY **a, const unsigned char **pp, long length)
321 const unsigned char *q;
323 pkey = d2i_PUBKEY(NULL, &q, length);
326 key = EVP_PKEY_get1_EC_KEY(pkey);
338 int i2d_EC_PUBKEY(EC_KEY *a, unsigned char **pp)
344 if ((pktmp = EVP_PKEY_new()) == NULL) {
345 ASN1err(ASN1_F_I2D_EC_PUBKEY, ERR_R_MALLOC_FAILURE);
348 EVP_PKEY_set1_EC_KEY(pktmp, a);
349 ret = i2d_PUBKEY(pktmp, pp);
350 EVP_PKEY_free(pktmp);
355 int X509_PUBKEY_set0_param(X509_PUBKEY *pub, ASN1_OBJECT *aobj,
356 int ptype, void *pval,
357 unsigned char *penc, int penclen)
359 if (!X509_ALGOR_set0(pub->algor, aobj, ptype, pval))
362 OPENSSL_free(pub->public_key->data);
363 pub->public_key->data = penc;
364 pub->public_key->length = penclen;
365 /* Set number of unused bits to zero */
366 pub->public_key->flags &= ~(ASN1_STRING_FLAG_BITS_LEFT | 0x07);
367 pub->public_key->flags |= ASN1_STRING_FLAG_BITS_LEFT;
372 int X509_PUBKEY_get0_param(ASN1_OBJECT **ppkalg,
373 const unsigned char **pk, int *ppklen,
374 X509_ALGOR **pa, X509_PUBKEY *pub)
377 *ppkalg = pub->algor->algorithm;
379 *pk = pub->public_key->data;
380 *ppklen = pub->public_key->length;
387 ASN1_BIT_STRING *X509_get0_pubkey_bitstr(const X509 *x)
391 return x->cert_info.key->public_key;