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 "CommonCryptoUtilities.h" 28 29#if ENABLE(SUBTLE_CRYPTO) 30 31#if defined(__has_include) 32#if __has_include(<CommonCrypto/CommonBigNum.h>) 33#include <CommonCrypto/CommonBigNum.h> 34#endif 35#endif 36 37typedef CCCryptorStatus CCStatus; 38extern "C" CCBigNumRef CCBigNumFromData(CCStatus *status, const void *s, size_t len); 39extern "C" size_t CCBigNumToData(CCStatus *status, const CCBigNumRef bn, void *to); 40extern "C" uint32_t CCBigNumByteCount(const CCBigNumRef bn); 41extern "C" CCBigNumRef CCCreateBigNum(CCStatus *status); 42extern "C" void CCBigNumFree(CCBigNumRef bn); 43extern "C" CCBigNumRef CCBigNumCopy(CCStatus *status, const CCBigNumRef bn); 44extern "C" CCStatus CCBigNumSubI(CCBigNumRef result, const CCBigNumRef a, const uint32_t b); 45extern "C" CCStatus CCBigNumMod(CCBigNumRef result, CCBigNumRef dividend, CCBigNumRef modulus); 46extern "C" CCStatus CCBigNumInverseMod(CCBigNumRef result, const CCBigNumRef a, const CCBigNumRef modulus); 47 48namespace WebCore { 49 50bool getCommonCryptoDigestAlgorithm(CryptoAlgorithmIdentifier hashFunction, CCDigestAlgorithm& algorithm) 51{ 52 switch (hashFunction) { 53 case CryptoAlgorithmIdentifier::SHA_1: 54 algorithm = kCCDigestSHA1; 55 return true; 56 case CryptoAlgorithmIdentifier::SHA_224: 57 algorithm = kCCDigestSHA224; 58 return true; 59 case CryptoAlgorithmIdentifier::SHA_256: 60 algorithm = kCCDigestSHA256; 61 return true; 62 case CryptoAlgorithmIdentifier::SHA_384: 63 algorithm = kCCDigestSHA384; 64 return true; 65 case CryptoAlgorithmIdentifier::SHA_512: 66 algorithm = kCCDigestSHA512; 67 return true; 68 default: 69 return false; 70 } 71} 72 73CCBigNum::CCBigNum(CCBigNumRef number) 74 : m_number(number) 75{ 76} 77 78CCBigNum::CCBigNum(const uint8_t* data, size_t size) 79{ 80 CCStatus status = kCCSuccess; 81 m_number = CCBigNumFromData(&status, data, size); 82 RELEASE_ASSERT(!status); 83} 84 85CCBigNum::~CCBigNum() 86{ 87 CCBigNumFree(m_number); 88} 89 90CCBigNum::CCBigNum(const CCBigNum& other) 91{ 92 CCStatus status = kCCSuccess; 93 m_number = CCBigNumCopy(&status, other.m_number); 94 RELEASE_ASSERT(!status); 95} 96 97CCBigNum::CCBigNum(CCBigNum&& other) 98{ 99 m_number = other.m_number; 100 other.m_number = nullptr; 101} 102 103CCBigNum& CCBigNum::operator=(const CCBigNum& other) 104{ 105 if (this == &other) 106 return *this; 107 108 CCBigNumFree(m_number); 109 110 CCStatus status = kCCSuccess; 111 m_number = CCBigNumCopy(&status, other.m_number); 112 RELEASE_ASSERT(!status); 113 return *this; 114} 115 116CCBigNum& CCBigNum::operator=(CCBigNum&& other) 117{ 118 if (this == &other) 119 return *this; 120 121 m_number = other.m_number; 122 other.m_number = nullptr; 123 124 return *this; 125} 126 127Vector<uint8_t> CCBigNum::data() const 128{ 129 Vector<uint8_t> result(CCBigNumByteCount(m_number)); 130 CCStatus status = kCCSuccess; 131 CCBigNumToData(&status, m_number, result.data()); 132 RELEASE_ASSERT(!status); 133 134 return result; 135} 136 137CCBigNum CCBigNum::operator-(uint32_t b) const 138{ 139 CCStatus status = kCCSuccess; 140 CCBigNumRef result = CCCreateBigNum(&status); 141 RELEASE_ASSERT(!status); 142 143 status = CCBigNumSubI(result, m_number, b); 144 RELEASE_ASSERT(!status); 145 146 return result; 147} 148 149CCBigNum CCBigNum::operator%(const CCBigNum& modulus) const 150{ 151 CCStatus status = kCCSuccess; 152 CCBigNumRef result = CCCreateBigNum(&status); 153 RELEASE_ASSERT(!status); 154 155 status = CCBigNumMod(result, m_number, modulus.m_number); 156 RELEASE_ASSERT(!status); 157 158 return result; 159} 160 161CCBigNum CCBigNum::inverse(const CCBigNum& modulus) const 162{ 163 CCStatus status = kCCSuccess; 164 CCBigNumRef result = CCCreateBigNum(&status); 165 RELEASE_ASSERT(!status); 166 167 status = CCBigNumInverseMod(result, m_number, modulus.m_number); 168 RELEASE_ASSERT(!status); 169 170 return result; 171} 172 173} // namespace WebCore 174 175#endif // ENABLE(SUBTLE_CRYPTO) 176