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1 /*
2  * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
3  * 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 #include <string.h>
58 
59 #include <openssl/base64.h>
60 #include <openssl/err.h>
61 #include <openssl/mem.h>
62 #include <openssl/x509.h>
63 
NETSCAPE_SPKI_set_pubkey(NETSCAPE_SPKI * x,EVP_PKEY * pkey)64 int NETSCAPE_SPKI_set_pubkey(NETSCAPE_SPKI *x, EVP_PKEY *pkey)
65 {
66     if ((x == NULL) || (x->spkac == NULL))
67         return (0);
68     return (X509_PUBKEY_set(&(x->spkac->pubkey), pkey));
69 }
70 
NETSCAPE_SPKI_get_pubkey(NETSCAPE_SPKI * x)71 EVP_PKEY *NETSCAPE_SPKI_get_pubkey(NETSCAPE_SPKI *x)
72 {
73     if ((x == NULL) || (x->spkac == NULL))
74         return (NULL);
75     return (X509_PUBKEY_get(x->spkac->pubkey));
76 }
77 
78 /* Load a Netscape SPKI from a base64 encoded string */
79 
NETSCAPE_SPKI_b64_decode(const char * str,int len)80 NETSCAPE_SPKI *NETSCAPE_SPKI_b64_decode(const char *str, int len)
81 {
82     unsigned char *spki_der;
83     const unsigned char *p;
84     size_t spki_len;
85     NETSCAPE_SPKI *spki;
86     if (len <= 0)
87         len = strlen(str);
88     if (!EVP_DecodedLength(&spki_len, len)) {
89         OPENSSL_PUT_ERROR(X509, X509_R_BASE64_DECODE_ERROR);
90         return NULL;
91     }
92     if (!(spki_der = OPENSSL_malloc(spki_len))) {
93         OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
94         return NULL;
95     }
96     if (!EVP_DecodeBase64
97         (spki_der, &spki_len, spki_len, (const uint8_t *)str, len)) {
98         OPENSSL_PUT_ERROR(X509, X509_R_BASE64_DECODE_ERROR);
99         OPENSSL_free(spki_der);
100         return NULL;
101     }
102     p = spki_der;
103     spki = d2i_NETSCAPE_SPKI(NULL, &p, spki_len);
104     OPENSSL_free(spki_der);
105     return spki;
106 }
107 
108 /* Generate a base64 encoded string from an SPKI */
109 
NETSCAPE_SPKI_b64_encode(NETSCAPE_SPKI * spki)110 char *NETSCAPE_SPKI_b64_encode(NETSCAPE_SPKI *spki)
111 {
112     unsigned char *der_spki, *p;
113     char *b64_str;
114     size_t b64_len;
115     int der_len;
116     der_len = i2d_NETSCAPE_SPKI(spki, NULL);
117     if (!EVP_EncodedLength(&b64_len, der_len)) {
118         OPENSSL_PUT_ERROR(X509, ERR_R_OVERFLOW);
119         return NULL;
120     }
121     der_spki = OPENSSL_malloc(der_len);
122     if (der_spki == NULL) {
123         OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
124         return NULL;
125     }
126     b64_str = OPENSSL_malloc(b64_len);
127     if (b64_str == NULL) {
128         OPENSSL_free(der_spki);
129         OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
130         return NULL;
131     }
132     p = der_spki;
133     i2d_NETSCAPE_SPKI(spki, &p);
134     EVP_EncodeBlock((unsigned char *)b64_str, der_spki, der_len);
135     OPENSSL_free(der_spki);
136     return b64_str;
137 }
138