/* * Copyright (C) 2013 Apple Inc. 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. * * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' * AND ANY EXPRESS 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 APPLE INC. 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. */ #include "config.h" #include "CryptoAlgorithmAES_KW.h" #if ENABLE(SUBTLE_CRYPTO) #include "CryptoKeyAES.h" #include "ExceptionCode.h" #include <CommonCrypto/CommonCrypto.h> namespace WebCore { void CryptoAlgorithmAES_KW::platformEncrypt(const CryptoKeyAES& key, const CryptoOperationData& data, VectorCallback callback, VoidCallback failureCallback, ExceptionCode&) { if (data.second % 8) { // RFC 3394 uses 64-bit blocks as input. // <rdar://problem/15949992> CommonCrypto doesn't detect incorrect data length, silently producing a bad cyphertext. failureCallback(); return; } Vector<uint8_t> result(CCSymmetricWrappedSize(kCCWRAPAES, data.second)); size_t resultSize = result.size(); int status = CCSymmetricKeyWrap(kCCWRAPAES, CCrfc3394_iv, CCrfc3394_ivLen, key.key().data(), key.key().size(), data.first, data.second, result.data(), &resultSize); if (status) { failureCallback(); return; } result.shrink(resultSize); callback(result); } void CryptoAlgorithmAES_KW::platformDecrypt(const CryptoKeyAES& key, const CryptoOperationData& data, VectorCallback callback, VoidCallback failureCallback, ExceptionCode&) { Vector<uint8_t> result(CCSymmetricUnwrappedSize(kCCWRAPAES, data.second)); size_t resultSize = result.size(); if (resultSize % 8) { failureCallback(); return; } int status = CCSymmetricKeyUnwrap(kCCWRAPAES, CCrfc3394_iv, CCrfc3394_ivLen, key.key().data(), key.key().size(), data.first, data.second, result.data(), &resultSize); if (status) { failureCallback(); return; } result.shrink(resultSize); callback(result); } } // namespace WebCore #endif // ENABLE(SUBTLE_CRYPTO)