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Move CT viewer extension code to crypto/x509v3
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,204 @@ | ||
| /* 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). | ||
| * | ||
| */ | ||
|
|
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|
|
||
| #include <stdio.h> | ||
| #include "cryptlib.h" | ||
| #include <openssl/asn1.h> | ||
| #include <openssl/x509v3.h> | ||
| #include <openssl/bn.h> | ||
| #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; | ||
|
|
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| 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; | ||
| } |
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