1/* 2 * Copyright (C) 2013 Apple Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' 14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS 17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 21 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 23 * THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26#include "config.h" 27#include "CryptoAlgorithmRSASSA_PKCS1_v1_5.h" 28 29#if ENABLE(SUBTLE_CRYPTO) 30 31#include "CommonCryptoUtilities.h" 32#include "CryptoAlgorithmRsaSsaParams.h" 33#include "CryptoDigest.h" 34#include "CryptoKeyRSA.h" 35#include "ExceptionCode.h" 36 37namespace WebCore { 38 39void CryptoAlgorithmRSASSA_PKCS1_v1_5::platformSign(const CryptoAlgorithmRsaSsaParams& parameters, const CryptoKeyRSA& key, const CryptoOperationData& data, VectorCallback callback, VoidCallback failureCallback, ExceptionCode& ec) 40{ 41 CCDigestAlgorithm digestAlgorithm; 42 if (!getCommonCryptoDigestAlgorithm(parameters.hash, digestAlgorithm)) { 43 ec = NOT_SUPPORTED_ERR; 44 return; 45 } 46 47 std::unique_ptr<CryptoDigest> digest = CryptoDigest::create(parameters.hash); 48 if (!digest) { 49 ec = NOT_SUPPORTED_ERR; 50 return; 51 } 52 53 digest->addBytes(data.first, data.second); 54 55 Vector<uint8_t> digestData = digest->computeHash(); 56 57 Vector<uint8_t> signature(512); 58 size_t signatureSize = signature.size(); 59 60 CCCryptorStatus status = CCRSACryptorSign(key.platformKey(), ccPKCS1Padding, digestData.data(), digestData.size(), digestAlgorithm, 0, signature.data(), &signatureSize); 61 if (status) { 62 failureCallback(); 63 return; 64 } 65 66 signature.resize(signatureSize); 67 callback(signature); 68} 69 70void CryptoAlgorithmRSASSA_PKCS1_v1_5::platformVerify(const CryptoAlgorithmRsaSsaParams& parameters, const CryptoKeyRSA& key, const CryptoOperationData& signature, const CryptoOperationData& data, BoolCallback callback, VoidCallback failureCallback, ExceptionCode& ec) 71{ 72 CCDigestAlgorithm digestAlgorithm; 73 if (!getCommonCryptoDigestAlgorithm(parameters.hash, digestAlgorithm)) { 74 ec = NOT_SUPPORTED_ERR; 75 return; 76 } 77 78 std::unique_ptr<CryptoDigest> digest = CryptoDigest::create(parameters.hash); 79 if (!digest) { 80 ec = NOT_SUPPORTED_ERR; 81 return; 82 } 83 84 digest->addBytes(data.first, data.second); 85 86 Vector<uint8_t> digestData = digest->computeHash(); 87 88 CCCryptorStatus status = CCRSACryptorVerify(key.platformKey(), ccPKCS1Padding, digestData.data(), digestData.size(), digestAlgorithm, 0, signature.first, signature.second); 89 if (!status) 90 callback(true); 91 else if (status == kCCNotVerified || status == kCCDecodeError) // <rdar://problem/15464982> CCRSACryptorVerify returns kCCDecodeError instead of kCCNotVerified sometimes 92 callback(false); 93 else 94 failureCallback(); 95} 96 97} // namespace WebCore 98 99#endif // ENABLE(SUBTLE_CRYPTO) 100