132 lines
4.4 KiB
C++
132 lines
4.4 KiB
C++
/*
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* Signature stuff.
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*
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* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is the Netscape security libraries.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1994-2000
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Dr Vipul Gupta <vipul.gupta@sun.com>, Sun Microsystems Laboratories
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "crypto/third_party/nss/chromium-nss.h"
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#include <vector>
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#include <cryptohi.h>
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#include <pk11pub.h>
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#include <secerr.h>
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#include <sechash.h>
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#include <stdint.h>
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#include "base/logging.h"
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#include "build/build_config.h"
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SECStatus DerSignData(PLArenaPool *arena,
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SECItem *result,
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SECItem *input,
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SECKEYPrivateKey *key,
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SECOidTag algo_id) {
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if (key->keyType != ecKey) {
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return SEC_DerSignData(arena, result, input->data, input->len, key,
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algo_id);
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}
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// NSS has a private function sec_DecodeSigAlg it uses to figure out the
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// correct hash from the algorithm id.
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HASH_HashType hash_type;
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switch (algo_id) {
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case SEC_OID_ANSIX962_ECDSA_SHA1_SIGNATURE:
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hash_type = HASH_AlgSHA1;
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break;
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#ifdef SHA224_LENGTH
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case SEC_OID_ANSIX962_ECDSA_SHA224_SIGNATURE:
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hash_type = HASH_AlgSHA224;
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break;
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#endif
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case SEC_OID_ANSIX962_ECDSA_SHA256_SIGNATURE:
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hash_type = HASH_AlgSHA256;
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break;
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case SEC_OID_ANSIX962_ECDSA_SHA384_SIGNATURE:
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hash_type = HASH_AlgSHA384;
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break;
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case SEC_OID_ANSIX962_ECDSA_SHA512_SIGNATURE:
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hash_type = HASH_AlgSHA512;
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break;
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default:
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PORT_SetError(SEC_ERROR_INVALID_ALGORITHM);
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return SECFailure;
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}
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// Hash the input.
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std::vector<uint8_t> hash_data(HASH_ResultLen(hash_type));
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SECStatus rv = HASH_HashBuf(
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hash_type, &hash_data[0], input->data, input->len);
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if (rv != SECSuccess)
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return rv;
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SECItem hash = {siBuffer, &hash_data[0],
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static_cast<unsigned int>(hash_data.size())};
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// Compute signature of hash.
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int signature_len = PK11_SignatureLen(key);
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std::vector<uint8_t> signature_data(signature_len);
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SECItem sig = {siBuffer, &signature_data[0],
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static_cast<unsigned int>(signature_len)};
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rv = PK11_Sign(key, &sig, &hash);
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if (rv != SECSuccess)
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return rv;
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CERTSignedData sd;
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PORT_Memset(&sd, 0, sizeof(sd));
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// Fill in tbsCertificate.
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sd.data.data = (unsigned char*) input->data;
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sd.data.len = input->len;
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// Fill in signatureAlgorithm.
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rv = SECOID_SetAlgorithmID(arena, &sd.signatureAlgorithm, algo_id, 0);
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if (rv != SECSuccess)
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return rv;
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// Fill in signatureValue.
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rv = DSAU_EncodeDerSigWithLen(&sd.signature, &sig, sig.len);
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if (rv != SECSuccess)
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return rv;
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sd.signature.len <<= 3; // Convert to bit string.
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// DER encode the signed data object.
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void* encode_result = SEC_ASN1EncodeItem(
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arena, result, &sd, SEC_ASN1_GET(CERT_SignedDataTemplate));
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PORT_Free(sd.signature.data);
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return encode_result ? SECSuccess : SECFailure;
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}
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