openssl/crypto/ct/ct_lib.c

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/*
* Written by Rob Stradling (rob@comodo.com) and Stephen Henson
* (steve@openssl.org) 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).
*
*/
#ifndef OPENSSL_NO_CT
# include <limits.h>
# include "internal/cryptlib.h"
# include "../../ssl/ssl_locl.h"
# include "internal/ct_int.h"
SCT *SCT_new(void)
{
SCT *sct = OPENSSL_zalloc(sizeof(SCT));
if (sct == NULL) {
CTerr(CT_F_SCT_NEW, ERR_R_MALLOC_FAILURE);
return NULL;
}
sct->entry_type = UNSET_ENTRY;
sct->version = UNSET_VERSION;
return sct;
}
void SCT_free(SCT *sct)
{
if (sct) {
OPENSSL_free(sct->log_id);
OPENSSL_free(sct->ext);
OPENSSL_free(sct->sig);
OPENSSL_free(sct->sct);
OPENSSL_free(sct);
}
}
int SCT_set_version(SCT *sct, sct_version_t version)
{
if (version != SCT_V1) {
CTerr(CT_F_SCT_SET_VERSION, CT_R_UNSUPPORTED_VERSION);
return 0;
}
sct->version = version;
return 1;
}
int SCT_set_log_entry_type(SCT *sct, log_entry_type_t entry_type)
{
if (entry_type != X509_ENTRY && entry_type != PRECERT_ENTRY) {
CTerr(CT_F_SCT_SET_LOG_ENTRY_TYPE, CT_R_UNSUPPORTED_ENTRY_TYPE);
return 0;
}
sct->entry_type = entry_type;
return 1;
}
int SCT_set0_log_id(SCT *sct, unsigned char *log_id, size_t log_id_len)
{
/* Currently only SHA-256 allowed so length must be SCT_V1_HASHLEN */
if (log_id_len != SCT_V1_HASHLEN) {
CTerr(CT_F_SCT_SET0_LOG_ID, CT_R_INVALID_LOG_ID_LENGTH);
return 0;
}
OPENSSL_free(sct->log_id);
sct->log_id = log_id;
sct->log_id_len = log_id_len;
return 1;
}
void SCT_set_timestamp(SCT *sct, uint64_t timestamp)
{
sct->timestamp = timestamp;
}
int SCT_set_signature_nid(SCT *sct, int nid)
{
switch (nid) {
case NID_sha256WithRSAEncryption:
sct->hash_alg = TLSEXT_hash_sha256;
sct->sig_alg = TLSEXT_signature_rsa;
return 1;
case NID_ecdsa_with_SHA256:
sct->hash_alg = TLSEXT_hash_sha256;
sct->sig_alg = TLSEXT_signature_ecdsa;
return 1;
default:
CTerr(CT_F_SCT_SET_SIGNATURE_NID, CT_R_UNRECOGNIZED_SIGNATURE_NID);
return 0;
}
}
void SCT_set0_extensions(SCT *sct, unsigned char *ext, size_t ext_len)
{
OPENSSL_free(sct->ext);
sct->ext = ext;
sct->ext_len = ext_len;
}
void SCT_set0_signature(SCT *sct, unsigned char *sig, size_t sig_len)
{
OPENSSL_free(sct->sig);
sct->sig = sig;
sct->sig_len = sig_len;
}
sct_version_t SCT_get_version(const SCT *sct)
{
return sct->version;
}
log_entry_type_t SCT_get_log_entry_type(const SCT *sct)
{
return sct->entry_type;
}
size_t SCT_get0_log_id(const SCT *sct, unsigned char **log_id)
{
*log_id = sct->log_id;
return sct->log_id_len;
}
uint64_t SCT_get_timestamp(const SCT *sct)
{
return sct->timestamp;
}
int SCT_get_signature_nid(const SCT *sct)
{
if (sct->version == SCT_V1) {
if (sct->hash_alg == TLSEXT_hash_sha256) {
switch (sct->sig_alg) {
case TLSEXT_signature_ecdsa:
return NID_ecdsa_with_SHA256;
case TLSEXT_signature_rsa:
return NID_sha256WithRSAEncryption;
default:
return NID_undef;
}
}
}
return NID_undef;
}
size_t SCT_get0_extensions(const SCT *sct, unsigned char **ext)
{
*ext = sct->ext;
return sct->ext_len;
}
size_t SCT_get0_signature(const SCT *sct, unsigned char **sig)
{
*sig = sct->sig;
return sct->sig_len;
}
#endif