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.] */
57 #include <openssl/asn1.h>
58 #include <openssl/asn1t.h>
59 #include <openssl/err.h>
60 #include <openssl/evp.h>
61 #include <openssl/mem.h>
62 #include <openssl/obj.h>
63 #include <openssl/x509.h>
65 #include "../evp/internal.h"
68 /* Minor tweak to operation: free up EVP_PKEY */
69 static int pubkey_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
72 if (operation == ASN1_OP_FREE_POST)
74 X509_PUBKEY *pubkey = (X509_PUBKEY *)*pval;
75 EVP_PKEY_free(pubkey->pkey);
80 ASN1_SEQUENCE_cb(X509_PUBKEY, pubkey_cb) = {
81 ASN1_SIMPLE(X509_PUBKEY, algor, X509_ALGOR),
82 ASN1_SIMPLE(X509_PUBKEY, public_key, ASN1_BIT_STRING)
83 } ASN1_SEQUENCE_END_cb(X509_PUBKEY, X509_PUBKEY)
85 IMPLEMENT_ASN1_FUNCTIONS(X509_PUBKEY)
87 int X509_PUBKEY_set(X509_PUBKEY **x, EVP_PKEY *pkey)
91 if (x == NULL) return(0);
93 if ((pk=X509_PUBKEY_new()) == NULL) goto error;
97 if (pkey->ameth->pub_encode)
99 if (!pkey->ameth->pub_encode(pk, pkey))
101 OPENSSL_PUT_ERROR(X509, X509_PUBKEY_set, X509_R_PUBLIC_KEY_ENCODE_ERROR);
107 OPENSSL_PUT_ERROR(X509, X509_PUBKEY_set, X509_R_METHOD_NOT_SUPPORTED);
113 OPENSSL_PUT_ERROR(X509, X509_PUBKEY_set, X509_R_UNSUPPORTED_ALGORITHM);
118 X509_PUBKEY_free(*x);
124 if (pk != NULL) X509_PUBKEY_free(pk);
128 EVP_PKEY *X509_PUBKEY_get(X509_PUBKEY *key)
132 if (key == NULL) goto error;
134 if (key->pkey != NULL)
136 return EVP_PKEY_dup(key->pkey);
139 if (key->public_key == NULL) goto error;
141 if ((ret = EVP_PKEY_new()) == NULL)
143 OPENSSL_PUT_ERROR(X509, X509_PUBKEY_get, ERR_R_MALLOC_FAILURE);
147 if (!EVP_PKEY_set_type(ret, OBJ_obj2nid(key->algor->algorithm)))
149 OPENSSL_PUT_ERROR(X509, X509_PUBKEY_get, X509_R_UNSUPPORTED_ALGORITHM);
153 if (ret->ameth->pub_decode)
155 if (!ret->ameth->pub_decode(ret, key))
157 OPENSSL_PUT_ERROR(X509, X509_PUBKEY_get, X509_R_PUBLIC_KEY_DECODE_ERROR);
163 OPENSSL_PUT_ERROR(X509, X509_PUBKEY_get, X509_R_METHOD_NOT_SUPPORTED);
167 /* Check to see if another thread set key->pkey first */
168 CRYPTO_w_lock(CRYPTO_LOCK_EVP_PKEY);
171 CRYPTO_w_unlock(CRYPTO_LOCK_EVP_PKEY);
178 CRYPTO_w_unlock(CRYPTO_LOCK_EVP_PKEY);
181 return EVP_PKEY_dup(ret);
189 /* Now two pseudo ASN1 routines that take an EVP_PKEY structure
190 * and encode or decode as X509_PUBKEY
193 EVP_PKEY *d2i_PUBKEY(EVP_PKEY **a, const unsigned char **pp,
198 xpk = d2i_X509_PUBKEY(NULL, pp, length);
199 if(!xpk) return NULL;
200 pktmp = X509_PUBKEY_get(xpk);
201 X509_PUBKEY_free(xpk);
202 if(!pktmp) return NULL;
211 int i2d_PUBKEY(const EVP_PKEY *a, unsigned char **pp)
213 X509_PUBKEY *xpk=NULL;
216 if(!X509_PUBKEY_set(&xpk, (EVP_PKEY*) a)) return 0;
217 ret = i2d_X509_PUBKEY(xpk, pp);
218 X509_PUBKEY_free(xpk);
222 /* The following are equivalents but which return RSA and DSA
225 RSA *d2i_RSA_PUBKEY(RSA **a, const unsigned char **pp,
230 const unsigned char *q;
232 pkey = d2i_PUBKEY(NULL, &q, length);
233 if (!pkey) return NULL;
234 key = EVP_PKEY_get1_RSA(pkey);
236 if (!key) return NULL;
246 int i2d_RSA_PUBKEY(const RSA *a, unsigned char **pp)
251 pktmp = EVP_PKEY_new();
254 OPENSSL_PUT_ERROR(X509, i2d_RSA_PUBKEY, ERR_R_MALLOC_FAILURE);
257 EVP_PKEY_set1_RSA(pktmp, (RSA*) a);
258 ret = i2d_PUBKEY(pktmp, pp);
259 EVP_PKEY_free(pktmp);
263 #ifndef OPENSSL_NO_DSA
264 DSA *d2i_DSA_PUBKEY(DSA **a, const unsigned char **pp,
269 const unsigned char *q;
271 pkey = d2i_PUBKEY(NULL, &q, length);
272 if (!pkey) return NULL;
273 key = EVP_PKEY_get1_DSA(pkey);
275 if (!key) return NULL;
285 int i2d_DSA_PUBKEY(const DSA *a, unsigned char **pp)
290 pktmp = EVP_PKEY_new();
293 OPENSSL_PUT_ERROR(X509, i2d_DSA_PUBKEY, ERR_R_MALLOC_FAILURE);
296 EVP_PKEY_set1_DSA(pktmp, (DSA*) a);
297 ret = i2d_PUBKEY(pktmp, pp);
298 EVP_PKEY_free(pktmp);
303 EC_KEY *d2i_EC_PUBKEY(EC_KEY **a, const unsigned char **pp, long length)
307 const unsigned char *q;
309 pkey = d2i_PUBKEY(NULL, &q, length);
310 if (!pkey) return(NULL);
311 key = EVP_PKEY_get1_EC_KEY(pkey);
313 if (!key) return(NULL);
323 int i2d_EC_PUBKEY(const EC_KEY *a, unsigned char **pp)
328 if ((pktmp = EVP_PKEY_new()) == NULL)
330 OPENSSL_PUT_ERROR(X509, i2d_EC_PUBKEY, ERR_R_MALLOC_FAILURE);
333 EVP_PKEY_set1_EC_KEY(pktmp, (EC_KEY*) a);
334 ret = i2d_PUBKEY(pktmp, pp);
335 EVP_PKEY_free(pktmp);
339 int X509_PUBKEY_set0_param(X509_PUBKEY *pub, const ASN1_OBJECT *aobj,
340 int ptype, void *pval,
341 unsigned char *penc, int penclen)
343 if (!X509_ALGOR_set0(pub->algor, aobj, ptype, pval))
347 if (pub->public_key->data)
348 OPENSSL_free(pub->public_key->data);
349 pub->public_key->data = penc;
350 pub->public_key->length = penclen;
351 /* Set number of unused bits to zero */
352 pub->public_key->flags&= ~(ASN1_STRING_FLAG_BITS_LEFT|0x07);
353 pub->public_key->flags|=ASN1_STRING_FLAG_BITS_LEFT;
358 int X509_PUBKEY_get0_param(ASN1_OBJECT **ppkalg,
359 const unsigned char **pk, int *ppklen,
364 *ppkalg = pub->algor->algorithm;
367 *pk = pub->public_key->data;
368 *ppklen = pub->public_key->length;