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/*
* Copyright (C) 2013-2018 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 "CommonCryptoUtilities.h"
#if ENABLE(SUBTLE_CRYPTO)
#if !HAVE(CCRSAGetCRTComponents)
#if USE(APPLE_INTERNAL_SDK)
#include <CommonCrypto/CommonBigNum.h>
#endif
extern "C" CCBigNumRef CCBigNumFromData(CCStatus *status, const void *s, size_t len);
extern "C" size_t CCBigNumToData(CCStatus *status, const CCBigNumRef bn, void *to);
extern "C" uint32_t CCBigNumByteCount(const CCBigNumRef bn);
extern "C" CCBigNumRef CCCreateBigNum(CCStatus *status);
extern "C" void CCBigNumFree(CCBigNumRef bn);
extern "C" CCBigNumRef CCBigNumCopy(CCStatus *status, const CCBigNumRef bn);
extern "C" CCStatus CCBigNumSubI(CCBigNumRef result, const CCBigNumRef a, const uint32_t b);
extern "C" CCStatus CCBigNumMod(CCBigNumRef result, CCBigNumRef dividend, CCBigNumRef modulus);
extern "C" CCStatus CCBigNumInverseMod(CCBigNumRef result, const CCBigNumRef a, const CCBigNumRef modulus);
#endif
namespace WebCore {
bool getCommonCryptoDigestAlgorithm(CryptoAlgorithmIdentifier hashFunction, CCDigestAlgorithm& algorithm)
{
switch (hashFunction) {
case CryptoAlgorithmIdentifier::SHA_1:
algorithm = kCCDigestSHA1;
return true;
case CryptoAlgorithmIdentifier::SHA_224:
algorithm = kCCDigestSHA224;
return true;
case CryptoAlgorithmIdentifier::SHA_256:
algorithm = kCCDigestSHA256;
return true;
case CryptoAlgorithmIdentifier::SHA_384:
algorithm = kCCDigestSHA384;
return true;
case CryptoAlgorithmIdentifier::SHA_512:
algorithm = kCCDigestSHA512;
return true;
default:
return false;
}
}
#if !HAVE(CCRSAGetCRTComponents)
CCBigNum::CCBigNum(CCBigNumRef number)
: m_number(number)
{
}
CCBigNum::CCBigNum(const uint8_t* data, size_t size)
{
CCStatus status = kCCSuccess;
m_number = CCBigNumFromData(&status, data, size);
RELEASE_ASSERT(!status);
}
CCBigNum::~CCBigNum()
{
CCBigNumFree(m_number);
}
CCBigNum::CCBigNum(const CCBigNum& other)
{
CCStatus status = kCCSuccess;
m_number = CCBigNumCopy(&status, other.m_number);
RELEASE_ASSERT(!status);
}
CCBigNum::CCBigNum(CCBigNum&& other)
{
m_number = other.m_number;
other.m_number = nullptr;
}
CCBigNum& CCBigNum::operator=(const CCBigNum& other)
{
if (this == &other)
return *this;
CCBigNumFree(m_number);
CCStatus status = kCCSuccess;
m_number = CCBigNumCopy(&status, other.m_number);
RELEASE_ASSERT(!status);
return *this;
}
CCBigNum& CCBigNum::operator=(CCBigNum&& other)
{
if (this == &other)
return *this;
m_number = other.m_number;
other.m_number = nullptr;
return *this;
}
Vector<uint8_t> CCBigNum::data() const
{
Vector<uint8_t> result(CCBigNumByteCount(m_number));
CCStatus status = kCCSuccess;
CCBigNumToData(&status, m_number, result.data());
RELEASE_ASSERT(!status);
return result;
}
CCBigNum CCBigNum::operator-(uint32_t b) const
{
CCStatus status = kCCSuccess;
CCBigNumRef result = CCCreateBigNum(&status);
RELEASE_ASSERT(!status);
status = CCBigNumSubI(result, m_number, b);
RELEASE_ASSERT(!status);
return result;
}
CCBigNum CCBigNum::operator%(const CCBigNum& modulus) const
{
CCStatus status = kCCSuccess;
CCBigNumRef result = CCCreateBigNum(&status);
RELEASE_ASSERT(!status);
status = CCBigNumMod(result, m_number, modulus.m_number);
RELEASE_ASSERT(!status);
return result;
}
CCBigNum CCBigNum::inverse(const CCBigNum& modulus) const
{
CCStatus status = kCCSuccess;
CCBigNumRef result = CCCreateBigNum(&status);
RELEASE_ASSERT(!status);
status = CCBigNumInverseMod(result, m_number, modulus.m_number);
RELEASE_ASSERT(!status);
return result;
}
#endif
} // namespace WebCore
#endif // ENABLE(SUBTLE_CRYPTO)