2 * Written by Rob Stradling (rob@comodo.com) and Stephen Henson
3 * (steve@openssl.org) for the OpenSSL project 2014.
5 /* ====================================================================
6 * Copyright (c) 2014 The OpenSSL Project. All rights reserved.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
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
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/)"
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.
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.
34 * 6. Redistributions of any form whatsoever must retain the following
36 * "This product includes software developed by the OpenSSL Project
37 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
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 * ====================================================================
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).
62 #include <openssl/ct.h>
63 #include <openssl/err.h>
64 #include <openssl/evp.h>
67 * TODO(robpercival): These macros are getting duplicated all over the place.
68 * Is there a single place they should be defined for re-use?
69 * Also, is there a good reason they aren't functions?
71 #define n2s(c,s) ((s=(((unsigned int)((c)[0]))<<8) | \
72 (((unsigned int)((c)[1])))), \
76 * Decodes the base64 string |in| into |out|.
77 * A new string will be malloc'd and assigned to |out|. This will be owned by
78 * the caller. Do not provide a pre-allocated string in |out|.
80 static int CT_base64_decode(const char *in, unsigned char **out)
84 unsigned char *outbuf = NULL;
86 if (in == NULL || out == NULL) {
87 CTerr(CT_F_CT_BASE64_DECODE, ERR_R_PASSED_NULL_PARAMETER);
97 outlen = (inlen / 4) * 3;
98 outbuf = OPENSSL_malloc(outlen);
100 CTerr(CT_F_CT_BASE64_DECODE, ERR_R_MALLOC_FAILURE);
104 outlen = EVP_DecodeBlock(outbuf, (unsigned char *)in, inlen);
106 OPENSSL_free(outbuf);
107 CTerr(CT_F_CT_BASE64_DECODE, CT_R_BASE64_DECODE_ERROR);
114 OPENSSL_free(outbuf);
118 SCT *SCT_new_from_base64(unsigned char version, const char *logid_base64,
119 ct_log_entry_type_t entry_type, uint64_t timestamp,
120 const char *extensions_base64,
121 const char *signature_base64)
124 unsigned char *dec = NULL;
127 if (logid_base64 == NULL ||
128 extensions_base64 == NULL ||
129 signature_base64 == NULL) {
130 CTerr(CT_F_SCT_NEW_FROM_BASE64, ERR_R_PASSED_NULL_PARAMETER);
136 CTerr(CT_F_SCT_NEW_FROM_BASE64, ERR_R_MALLOC_FAILURE);
141 * RFC6962 section 4.1 says we "MUST NOT expect this to be 0", but we
142 * can only construct SCT versions that have been defined.
144 if (!SCT_set_version(sct, version)) {
145 CTerr(CT_F_SCT_NEW_FROM_BASE64, CT_R_SCT_UNSUPPORTED_VERSION);
149 declen = CT_base64_decode(logid_base64, &dec);
151 CTerr(CT_F_SCT_NEW_FROM_BASE64, X509_R_BASE64_DECODE_ERROR);
154 if (!SCT_set0_log_id(sct, dec, declen))
158 declen = CT_base64_decode(extensions_base64, &dec);
160 CTerr(CT_F_SCT_NEW_FROM_BASE64, X509_R_BASE64_DECODE_ERROR);
163 SCT_set0_extensions(sct, dec, declen);
166 declen = CT_base64_decode(signature_base64, &dec);
168 CTerr(CT_F_SCT_NEW_FROM_BASE64, X509_R_BASE64_DECODE_ERROR);
171 if (o2i_SCT_signature(sct, (const unsigned char **)&dec, declen) <= 0)
174 SCT_set_timestamp(sct, timestamp);
176 if (!SCT_set_log_entry_type(sct, entry_type))
187 CTLOG *CTLOG_new_from_base64(const char *pkey_base64, const char *name)
189 unsigned char *pkey_der;
191 EVP_PKEY *pkey = NULL;
194 pkey_der_len = CT_base64_decode(pkey_base64, &pkey_der);
195 if (pkey_der_len <= 0) {
196 CTerr(CT_F_CTLOG_NEW_FROM_BASE64, CT_R_LOG_CONF_INVALID_KEY);
200 pkey = d2i_PUBKEY(NULL, (const unsigned char **)&pkey_der, pkey_der_len);
202 CTerr(CT_F_CTLOG_NEW_FROM_BASE64, CT_R_LOG_CONF_INVALID_KEY);
206 log = CTLOG_new(pkey, name);