71 lines
3.0 KiB
C++
71 lines
3.0 KiB
C++
/*
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* Copyright (C) 2017 Apple Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "config.h"
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#include "CryptoAlgorithmPBKDF2.h"
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#if ENABLE(WEB_CRYPTO)
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#include "CryptoAlgorithmPbkdf2Params.h"
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#include "CryptoKeyRaw.h"
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#include <CommonCrypto/CommonKeyDerivation.h>
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namespace WebCore {
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namespace CryptoAlgorithmPBKDF2MacInternal {
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static CCPseudoRandomAlgorithm commonCryptoHMACAlgorithm(CryptoAlgorithmIdentifier hashFunction)
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{
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switch (hashFunction) {
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case CryptoAlgorithmIdentifier::SHA_1:
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return kCCPRFHmacAlgSHA1;
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case CryptoAlgorithmIdentifier::SHA_224:
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return kCCPRFHmacAlgSHA224;
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case CryptoAlgorithmIdentifier::SHA_256:
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return kCCPRFHmacAlgSHA256;
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case CryptoAlgorithmIdentifier::SHA_384:
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return kCCPRFHmacAlgSHA384;
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case CryptoAlgorithmIdentifier::SHA_512:
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return kCCPRFHmacAlgSHA512;
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default:
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ASSERT_NOT_REACHED();
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return 0;
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}
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}
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}
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ExceptionOr<Vector<uint8_t>> CryptoAlgorithmPBKDF2::platformDeriveBits(const CryptoAlgorithmPbkdf2Params& parameters, const CryptoKeyRaw& key, size_t length)
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{
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Vector<uint8_t> result(length / 8);
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// CCKeyDerivationPBKDF returns an error if the key pointer is null, even if the key length is 0. For this reason, we need to make sure we pass the empty string
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// instead of a null pointer in this case.
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if (CCKeyDerivationPBKDF(kCCPBKDF2, key.key().data() ? reinterpret_cast<const char *>(key.key().data()) : "", key.key().size(), parameters.saltVector().data(), parameters.saltVector().size(), CryptoAlgorithmPBKDF2MacInternal::commonCryptoHMACAlgorithm(parameters.hashIdentifier), parameters.iterations, result.data(), length / 8))
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return Exception { OperationError };
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return WTFMove(result);
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}
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}
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#endif // ENABLE(WEB_CRYPTO)
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