/*
* Signature stuff.
*
* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is the Netscape security libraries.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1994-2000
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Dr Vipul Gupta <vipul.gupta@sun.com>, Sun Microsystems Laboratories
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include "crypto/third_party/nss/chromium-nss.h"
#include <vector>
#include <cryptohi.h>
#include <pk11pub.h>
#include <secerr.h>
#include <sechash.h>
#include "base/basictypes.h"
#include "base/logging.h"
#include "build/build_config.h"
SECStatus DerSignData(PLArenaPool *arena,
SECItem *result,
SECItem *input,
SECKEYPrivateKey *key,
SECOidTag algo_id) {
if (key->keyType != ecKey) {
return SEC_DerSignData(arena, result, input->data, input->len, key,
algo_id);
}
// NSS has a private function sec_DecodeSigAlg it uses to figure out the
// correct hash from the algorithm id.
HASH_HashType hash_type;
switch (algo_id) {
case SEC_OID_ANSIX962_ECDSA_SHA1_SIGNATURE:
hash_type = HASH_AlgSHA1;
break;
#ifdef SHA224_LENGTH
case SEC_OID_ANSIX962_ECDSA_SHA224_SIGNATURE:
hash_type = HASH_AlgSHA224;
break;
#endif
case SEC_OID_ANSIX962_ECDSA_SHA256_SIGNATURE:
hash_type = HASH_AlgSHA256;
break;
case SEC_OID_ANSIX962_ECDSA_SHA384_SIGNATURE:
hash_type = HASH_AlgSHA384;
break;
case SEC_OID_ANSIX962_ECDSA_SHA512_SIGNATURE:
hash_type = HASH_AlgSHA512;
break;
default:
PORT_SetError(SEC_ERROR_INVALID_ALGORITHM);
return SECFailure;
}
// Hash the input.
std::vector<uint8> hash_data(HASH_ResultLen(hash_type));
SECStatus rv = HASH_HashBuf(
hash_type, &hash_data[0], input->data, input->len);
if (rv != SECSuccess)
return rv;
SECItem hash = {siBuffer, &hash_data[0],
static_cast<unsigned int>(hash_data.size())};
// Compute signature of hash.
int signature_len = PK11_SignatureLen(key);
std::vector<uint8> signature_data(signature_len);
SECItem sig = {siBuffer, &signature_data[0],
static_cast<unsigned int>(signature_len)};
rv = PK11_Sign(key, &sig, &hash);
if (rv != SECSuccess)
return rv;
CERTSignedData sd;
PORT_Memset(&sd, 0, sizeof(sd));
// Fill in tbsCertificate.
sd.data.data = (unsigned char*) input->data;
sd.data.len = input->len;
// Fill in signatureAlgorithm.
rv = SECOID_SetAlgorithmID(arena, &sd.signatureAlgorithm, algo_id, 0);
if (rv != SECSuccess)
return rv;
// Fill in signatureValue.
rv = DSAU_EncodeDerSigWithLen(&sd.signature, &sig, sig.len);
if (rv != SECSuccess)
return rv;
sd.signature.len <<= 3; // Convert to bit string.
// DER encode the signed data object.
void* encode_result = SEC_ASN1EncodeItem(
arena, result, &sd, SEC_ASN1_GET(CERT_SignedDataTemplate));
PORT_Free(sd.signature.data);
return encode_result ? SECSuccess : SECFailure;
}