2 /* Written by Rob Stradling (rob@comodo.com) for the OpenSSL project 2014.
4 /* ====================================================================
5 * Copyright (c) 2014 The OpenSSL Project. All rights reserved.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in
16 * the documentation and/or other materials provided with the
19 * 3. All advertising materials mentioning features or use of this
20 * software must display the following acknowledgment:
21 * "This product includes software developed by the OpenSSL Project
22 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
24 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
25 * endorse or promote products derived from this software without
26 * prior written permission. For written permission, please contact
27 * licensing@OpenSSL.org.
29 * 5. Products derived from this software may not be called "OpenSSL"
30 * nor may "OpenSSL" appear in their names without prior written
31 * permission of the OpenSSL Project.
33 * 6. Redistributions of any form whatsoever must retain the following
35 * "This product includes software developed by the OpenSSL Project
36 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
38 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
39 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
40 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
41 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
42 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
43 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
44 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
45 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
46 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
47 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
48 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
49 * OF THE POSSIBILITY OF SUCH DAMAGE.
50 * ====================================================================
52 * This product includes cryptographic software written by Eric Young
53 * (eay@cryptsoft.com). This product includes software written by Tim
54 * Hudson (tjh@cryptsoft.com).
61 #include <openssl/asn1.h>
62 #include <openssl/x509v3.h>
63 #include "../ssl/ssl_locl.h"
65 #if (defined(_WIN32) || defined(_WIN64)) && !defined(__MINGW32__)
66 #define SCT_TIMESTAMP unsigned __int64
67 #elif defined(__arch64__)
68 #define SCT_TIMESTAMP unsigned long
70 #define SCT_TIMESTAMP unsigned long long
73 #define n2l8(c,l) (l =((SCT_TIMESTAMP)(*((c)++)))<<56, \
74 l|=((SCT_TIMESTAMP)(*((c)++)))<<48, \
75 l|=((SCT_TIMESTAMP)(*((c)++)))<<40, \
76 l|=((SCT_TIMESTAMP)(*((c)++)))<<32, \
77 l|=((SCT_TIMESTAMP)(*((c)++)))<<24, \
78 l|=((SCT_TIMESTAMP)(*((c)++)))<<16, \
79 l|=((SCT_TIMESTAMP)(*((c)++)))<< 8, \
80 l|=((SCT_TIMESTAMP)(*((c)++))))
82 typedef struct SCT_st {
85 unsigned short sctlen;
87 /* Components of the SCT. "logid", "ext" and "sig" point to addresses
90 unsigned char version;
92 unsigned short logidlen;
93 SCT_TIMESTAMP timestamp;
95 unsigned short extlen;
96 unsigned char hash_alg;
97 unsigned char sig_alg;
99 unsigned short siglen;
102 DECLARE_STACK_OF(SCT)
104 static void SCT_LIST_free(STACK_OF(SCT) *a);
105 static STACK_OF(SCT) *d2i_SCT_LIST(STACK_OF(SCT) **a, const unsigned char **pp,
107 static int i2r_SCT_LIST(X509V3_EXT_METHOD *method, STACK_OF(SCT) *sct_list,
108 BIO *out, int indent);
110 const X509V3_EXT_METHOD v3_ct_scts[] = {
111 { NID_ct_precert_scts, 0, NULL,
112 0,(X509V3_EXT_FREE)SCT_LIST_free,
113 (X509V3_EXT_D2I)d2i_SCT_LIST, 0,
115 (X509V3_EXT_I2R)i2r_SCT_LIST, 0,
118 { NID_ct_cert_scts, 0, NULL,
119 0,(X509V3_EXT_FREE)SCT_LIST_free,
120 (X509V3_EXT_D2I)d2i_SCT_LIST, 0,
122 (X509V3_EXT_I2R)i2r_SCT_LIST, 0,
126 static void tls12_signature_print(BIO *out, const unsigned char hash_alg,
127 const unsigned char sig_alg)
130 /* RFC6962 only permits two signature algorithms */
131 if (hash_alg == TLSEXT_hash_sha256)
133 if (sig_alg == TLSEXT_signature_rsa)
134 nid = NID_sha256WithRSAEncryption;
135 else if (sig_alg == TLSEXT_signature_ecdsa)
136 nid = NID_ecdsa_with_SHA256;
138 if (nid == NID_undef)
139 BIO_printf(out, "%02X%02X", hash_alg, sig_alg);
141 BIO_printf(out, "%s", OBJ_nid2ln(nid));
144 static void timestamp_print(BIO *out, SCT_TIMESTAMP timestamp)
146 ASN1_GENERALIZEDTIME *gen;
148 gen = ASN1_GENERALIZEDTIME_new();
149 ASN1_GENERALIZEDTIME_adj(gen, (time_t)0,
150 (int)(timestamp / 86400000),
151 (timestamp % 86400000) / 1000);
152 /* Note GeneralizedTime from ASN1_GENERALIZETIME_adj is always 15
153 * characters long with a final Z. Update it with fractional seconds.
155 BIO_snprintf(genstr, sizeof(genstr), "%.14s.%03dZ",
156 ASN1_STRING_data(gen),
157 (unsigned int)(timestamp % 1000));
158 ASN1_GENERALIZEDTIME_set_string(gen, genstr);
159 ASN1_GENERALIZEDTIME_print(out, gen);
160 ASN1_GENERALIZEDTIME_free(gen);
163 static void SCT_free(SCT *sct)
167 if (sct->sct) OPENSSL_free(sct->sct);
172 static void SCT_LIST_free(STACK_OF(SCT) *a)
174 sk_SCT_pop_free(a, SCT_free);
177 static STACK_OF(SCT) *d2i_SCT_LIST(STACK_OF(SCT) **a, const unsigned char **pp,
180 ASN1_OCTET_STRING *oct = NULL;
181 STACK_OF(SCT) *sk = NULL;
183 unsigned char *p, *p2;
184 unsigned short listlen, sctlen = 0, fieldlen;
186 if (d2i_ASN1_OCTET_STRING(&oct, pp, length) == NULL)
192 if (listlen != oct->length - 2)
195 if ((sk=sk_SCT_new_null()) == NULL)
205 if ((sctlen < 1) || (sctlen > listlen))
209 sct = OPENSSL_malloc(sizeof(SCT));
212 if (!sk_SCT_push(sk, sct))
218 sct->sct = OPENSSL_malloc(sctlen);
221 memcpy(sct->sct, p, sctlen);
222 sct->sctlen = sctlen;
226 sct->version = *p2++;
227 if (sct->version == 0) /* SCT v1 */
229 /* Fixed-length header:
231 * (1 byte) Version sct_version;
232 * (32 bytes) LogID id;
233 * (8 bytes) uint64 timestamp;
234 * (2 bytes + ?) CtExtensions extensions;
244 n2l8(p2, sct->timestamp);
247 if (sctlen < fieldlen)
250 sct->extlen = fieldlen;
254 /* digitally-signed struct header:
255 * (1 byte) Hash algorithm
256 * (1 byte) Signature algorithm
257 * (2 bytes + ?) Signature
263 sct->hash_alg = *p2++;
264 sct->sig_alg = *p2++;
266 if (sctlen != fieldlen)
269 sct->siglen = fieldlen;
274 ASN1_OCTET_STRING_free(oct);
283 static int i2r_SCT_LIST(X509V3_EXT_METHOD *method, STACK_OF(SCT) *sct_list,
284 BIO *out, int indent)
289 for (i = 0; i < sk_SCT_num(sct_list);) {
290 sct = sk_SCT_value(sct_list, i);
292 BIO_printf(out, "%*sSigned Certificate Timestamp:", indent, "");
293 BIO_printf(out, "\n%*sVersion : ", indent + 4, "");
295 if (sct->version == 0) /* SCT v1 */
297 BIO_printf(out, "v1(0)");
299 BIO_printf(out, "\n%*sLog ID : ", indent + 4, "");
300 BIO_hex_string(out, indent + 16, 16, sct->logid,
303 BIO_printf(out, "\n%*sTimestamp : ", indent + 4, "");
304 timestamp_print(out, sct->timestamp);
306 BIO_printf(out, "\n%*sExtensions: ", indent + 4, "");
307 if (sct->extlen == 0)
308 BIO_printf(out, "none");
310 BIO_hex_string(out, indent + 16, 16, sct->ext,
313 BIO_printf(out, "\n%*sSignature : ", indent + 4, "");
314 tls12_signature_print(out, sct->hash_alg, sct->sig_alg);
315 BIO_printf(out, "\n%*s ", indent + 4, "");
316 BIO_hex_string(out, indent + 16, 16, sct->sig,
319 else /* Unknown version */
321 BIO_printf(out, "unknown\n%*s", indent + 16, "");
322 BIO_hex_string(out, indent + 16, 16, sct->sct,
326 if (++i < sk_SCT_num(sct_list)) BIO_printf(out, "\n");