/* v3_scts.c */ /* Written by Rob Stradling (rob@comodo.com) for the OpenSSL project 2014. */ /* ==================================================================== * Copyright (c) 2014 The OpenSSL Project. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * * 3. All advertising materials mentioning features or use of this * software must display the following acknowledgment: * "This product includes software developed by the OpenSSL Project * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" * * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to * endorse or promote products derived from this software without * prior written permission. For written permission, please contact * licensing@OpenSSL.org. * * 5. Products derived from this software may not be called "OpenSSL" * nor may "OpenSSL" appear in their names without prior written * permission of the OpenSSL Project. * * 6. Redistributions of any form whatsoever must retain the following * acknowledgment: * "This product includes software developed by the OpenSSL Project * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" * * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. * ==================================================================== * * This product includes cryptographic software written by Eric Young * (eay@cryptsoft.com). This product includes software written by Tim * Hudson (tjh@cryptsoft.com). * */ #include #include "cryptlib.h" #include #include #include #include "../ssl/ssl_locl.h" static int i2r_scts(X509V3_EXT_METHOD *method, ASN1_OCTET_STRING *oct, BIO *out, int indent); const X509V3_EXT_METHOD v3_ct_scts[] = { { NID_ct_precert_scts, 0, ASN1_ITEM_ref(ASN1_OCTET_STRING), 0,0,0,0, 0,0,0,0, (X509V3_EXT_I2R)i2r_scts, NULL, NULL}, { NID_ct_cert_scts, 0, ASN1_ITEM_ref(ASN1_OCTET_STRING), 0,0,0,0, 0,0,0,0, (X509V3_EXT_I2R)i2r_scts, NULL, NULL}, }; static void tls12_signature_print(BIO *out, const unsigned char *data) { int nid = NID_undef; /* RFC6962 only permits two signature algorithms */ if (data[0] == TLSEXT_hash_sha256) { if (data[1] == TLSEXT_signature_rsa) nid = NID_sha256WithRSAEncryption; else if (data[1] == TLSEXT_signature_ecdsa) nid = NID_ecdsa_with_SHA256; } if (nid == NID_undef) BIO_printf(out, "%02X%02X", data[0], data[1]); else BIO_printf(out, "%s", OBJ_nid2ln(nid)); } static void timestamp_print(BIO *out, BN_ULLONG timestamp) { ASN1_GENERALIZEDTIME *gen; char genstr[20]; gen = ASN1_GENERALIZEDTIME_new(); ASN1_GENERALIZEDTIME_adj(gen, (time_t)0, timestamp / 86400000, (timestamp % 86400000) / 1000); /* Note GeneralizedTime from ASN1_GENERALIZETIME_adj is always 15 * characters long with a final Z. Update it with fractional seconds. */ BIO_snprintf(genstr, sizeof(genstr), "%.14s.%03dZ", ASN1_STRING_data(gen), (unsigned int)(timestamp % 1000)); ASN1_GENERALIZEDTIME_set_string(gen, genstr); ASN1_GENERALIZEDTIME_print(out, gen); ASN1_GENERALIZEDTIME_free(gen); } static int i2r_scts(X509V3_EXT_METHOD *method, ASN1_OCTET_STRING *oct, BIO *out, int indent) { BN_ULLONG timestamp; unsigned char* data = oct->data; unsigned short listlen, sctlen = 0, fieldlen; if (oct->length < 2) return 0; n2s(data, listlen); if (listlen != oct->length - 2) return 0; while (listlen > 0) { if (listlen < 2) return 0; n2s(data, sctlen); listlen -= 2; if ((sctlen < 1) || (sctlen > listlen)) return 0; listlen -= sctlen; BIO_printf(out, "%*sSigned Certificate Timestamp:", indent, ""); if (*data == 0) /* SCT v1 */ { /* Fixed-length header: * struct { * (1 byte) Version sct_version; * (32 bytes) LogID id; * (8 bytes) uint64 timestamp; * (2 bytes + ?) CtExtensions extensions; */ if (sctlen < 43) return 0; sctlen -= 43; BIO_printf(out, "\n%*sVersion : v1(0)", indent + 4, ""); BIO_printf(out, "\n%*sLog ID : ", indent + 4, ""); BIO_hex_string(out, indent + 16, 16, data + 1, 32); data += 33; n2l8(data, timestamp); BIO_printf(out, "\n%*sTimestamp : ", indent + 4, ""); timestamp_print(out, timestamp); n2s(data, fieldlen); if (sctlen < fieldlen) return 0; sctlen -= fieldlen; BIO_printf(out, "\n%*sExtensions: ", indent + 4, ""); if (fieldlen == 0) BIO_printf(out, "none"); else BIO_hex_string(out, indent + 16, 16, data, fieldlen); data += fieldlen; /* digitally-signed struct header: * (1 byte) Hash algorithm * (1 byte) Signature algorithm * (2 bytes + ?) Signature */ if (sctlen < 4) return 0; sctlen -= 4; BIO_printf(out, "\n%*sSignature : ", indent + 4, ""); tls12_signature_print(out, data); data += 2; n2s(data, fieldlen); if (sctlen != fieldlen) return 0; BIO_printf(out, "\n%*s ", indent + 4, ""); BIO_hex_string(out, indent + 16, 16, data, fieldlen); if (listlen > 0) BIO_printf(out, "\n"); data += fieldlen; } } return 1; }