1 /* $OpenBSD: x509spki.c,v 1.11 2014/07/10 13:58:23 jsing Exp $ */
2 /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
3  * project 1999.
4  */
5 /* ====================================================================
6  * Copyright (c) 1999 The OpenSSL Project.  All rights reserved.
7  *
8  * Redistribution and use in source and binary forms, with or without
9  * modification, are permitted provided that the following conditions
10  * are met:
11  *
12  * 1. Redistributions of source code must retain the above copyright
13  *    notice, this list of conditions and the following disclaimer.
14  *
15  * 2. Redistributions in binary form must reproduce the above copyright
16  *    notice, this list of conditions and the following disclaimer in
17  *    the documentation and/or other materials provided with the
18  *    distribution.
19  *
20  * 3. All advertising materials mentioning features or use of this
21  *    software must display the following acknowledgment:
22  *    "This product includes software developed by the OpenSSL Project
23  *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
24  *
25  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
26  *    endorse or promote products derived from this software without
27  *    prior written permission. For written permission, please contact
28  *    licensing@OpenSSL.org.
29  *
30  * 5. Products derived from this software may not be called "OpenSSL"
31  *    nor may "OpenSSL" appear in their names without prior written
32  *    permission of the OpenSSL Project.
33  *
34  * 6. Redistributions of any form whatsoever must retain the following
35  *    acknowledgment:
36  *    "This product includes software developed by the OpenSSL Project
37  *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
38  *
39  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
40  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
41  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
42  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
43  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
44  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
45  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
46  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
48  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
49  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
50  * OF THE POSSIBILITY OF SUCH DAMAGE.
51  * ====================================================================
52  *
53  * This product includes cryptographic software written by Eric Young
54  * (eay@cryptsoft.com).  This product includes software written by Tim
55  * Hudson (tjh@cryptsoft.com).
56  *
57  */
58 
59 #include <stdio.h>
60 #include <string.h>
61 
62 #include <openssl/err.h>
63 #include <openssl/x509.h>
64 
65 int
66 NETSCAPE_SPKI_set_pubkey(NETSCAPE_SPKI *x, EVP_PKEY *pkey)
67 {
68 	if ((x == NULL) || (x->spkac == NULL))
69 		return (0);
70 	return (X509_PUBKEY_set(&(x->spkac->pubkey), pkey));
71 }
72 
73 EVP_PKEY *
74 NETSCAPE_SPKI_get_pubkey(NETSCAPE_SPKI *x)
75 {
76 	if ((x == NULL) || (x->spkac == NULL))
77 		return (NULL);
78 	return (X509_PUBKEY_get(x->spkac->pubkey));
79 }
80 
81 /* Load a Netscape SPKI from a base64 encoded string */
82 
83 NETSCAPE_SPKI *
84 NETSCAPE_SPKI_b64_decode(const char *str, int len)
85 {
86 	unsigned char *spki_der;
87 	const unsigned char *p;
88 	int spki_len;
89 	NETSCAPE_SPKI *spki;
90 
91 	if (len <= 0)
92 		len = strlen(str);
93 	if (!(spki_der = malloc(len + 1))) {
94 		X509err(X509_F_NETSCAPE_SPKI_B64_DECODE, ERR_R_MALLOC_FAILURE);
95 		return NULL;
96 	}
97 	spki_len = EVP_DecodeBlock(spki_der, (const unsigned char *)str, len);
98 	if (spki_len < 0) {
99 		X509err(X509_F_NETSCAPE_SPKI_B64_DECODE,
100 		    X509_R_BASE64_DECODE_ERROR);
101 		free(spki_der);
102 		return NULL;
103 	}
104 	p = spki_der;
105 	spki = d2i_NETSCAPE_SPKI(NULL, &p, spki_len);
106 	free(spki_der);
107 	return spki;
108 }
109 
110 /* Generate a base64 encoded string from an SPKI */
111 
112 char *
113 NETSCAPE_SPKI_b64_encode(NETSCAPE_SPKI *spki)
114 {
115 	unsigned char *der_spki, *p;
116 	char *b64_str;
117 	int der_len;
118 	der_len = i2d_NETSCAPE_SPKI(spki, NULL);
119 	der_spki = malloc(der_len);
120 	b64_str = reallocarray(NULL, der_len, 2);
121 	if (!der_spki || !b64_str) {
122 		X509err(X509_F_NETSCAPE_SPKI_B64_ENCODE, ERR_R_MALLOC_FAILURE);
123 		free(der_spki);
124 		free(b64_str);
125 		return NULL;
126 	}
127 	p = der_spki;
128 	i2d_NETSCAPE_SPKI(spki, &p);
129 	EVP_EncodeBlock((unsigned char *)b64_str, der_spki, der_len);
130 	free(der_spki);
131 	return b64_str;
132 }
133