1 /* crypto/asn1/d2i_pu.c */
2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
3 * All rights reserved.
4 *
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.
8 *
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).
15 *
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.
22 *
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
25 * are met:
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)"
40 *
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
51 * SUCH DAMAGE.
52 *
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.]
57 */
58
59 #include <stdio.h>
60 #include "cryptlib.h"
61 #include <openssl/bn.h>
62 #include <openssl/evp.h>
63 #include <openssl/objects.h>
64 #include <openssl/asn1.h>
65 #ifndef OPENSSL_NO_RSA
66 #include <openssl/rsa.h>
67 #endif
68 #ifndef OPENSSL_NO_DSA
69 #include <openssl/dsa.h>
70 #endif
71 #ifndef OPENSSL_NO_EC
72 #include <openssl/ec.h>
73 #endif
74
75 EVP_PKEY *d2i_PublicKey(int type, EVP_PKEY **a, const unsigned char **pp,
76 long length)
77 {
78 EVP_PKEY *ret;
79
80 if ((a == NULL) || (*a == NULL))
81 {
82 if ((ret=EVP_PKEY_new()) == NULL)
83 {
84 ASN1err(ASN1_F_D2I_PUBLICKEY,ERR_R_EVP_LIB);
85 return(NULL);
86 }
87 }
88 else ret= *a;
89
90 if (!EVP_PKEY_set_type(ret, type))
91 {
92 ASN1err(ASN1_F_D2I_PUBLICKEY,ERR_R_EVP_LIB);
93 goto err;
94 }
95
96 switch (EVP_PKEY_id(ret))
97 {
98 #ifndef OPENSSL_NO_RSA
99 case EVP_PKEY_RSA:
100 if ((ret->pkey.rsa=d2i_RSAPublicKey(NULL,
101 (const unsigned char **)pp,length)) == NULL) /* TMP UGLY CAST */
102 {
103 ASN1err(ASN1_F_D2I_PUBLICKEY,ERR_R_ASN1_LIB);
104 goto err;
105 }
106 break;
107 #endif
108 #ifndef OPENSSL_NO_DSA
109 case EVP_PKEY_DSA:
110 if (!d2i_DSAPublicKey(&(ret->pkey.dsa),
111 (const unsigned char **)pp,length)) /* TMP UGLY CAST */
112 {
113 ASN1err(ASN1_F_D2I_PUBLICKEY,ERR_R_ASN1_LIB);
114 goto err;
115 }
116 break;
117 #endif
118 #ifndef OPENSSL_NO_EC
119 case EVP_PKEY_EC:
120 if (!o2i_ECPublicKey(&(ret->pkey.ec),
121 (const unsigned char **)pp, length))
122 {
123 ASN1err(ASN1_F_D2I_PUBLICKEY, ERR_R_ASN1_LIB);
124 goto err;
125 }
126 break;
127 #endif
128 default:
129 ASN1err(ASN1_F_D2I_PUBLICKEY,ASN1_R_UNKNOWN_PUBLIC_KEY_TYPE);
130 goto err;
131 /* break; */
132 }
133 if (a != NULL) (*a)=ret;
134 return(ret);
135 err:
136 if ((ret != NULL) && ((a == NULL) || (*a != ret))) EVP_PKEY_free(ret);
137 return(NULL);
138 }
139