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/*
* Copyright (C) 2018 Sony Interactive Entertainment Inc.
*
* 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 "CryptoDigest.h"
#include <openssl/sha.h>
namespace {
struct SHA1Functions {
static constexpr auto init = SHA1_Init;
static constexpr auto update = SHA1_Update;
static constexpr auto final = SHA1_Final;
static constexpr size_t digestLength = SHA_DIGEST_LENGTH;
};
struct SHA224Functions {
static constexpr auto init = SHA224_Init;
static constexpr auto update = SHA224_Update;
static constexpr auto final = SHA224_Final;
static constexpr size_t digestLength = SHA224_DIGEST_LENGTH;
};
struct SHA256Functions {
static constexpr auto init = SHA256_Init;
static constexpr auto update = SHA256_Update;
static constexpr auto final = SHA256_Final;
static constexpr size_t digestLength = SHA256_DIGEST_LENGTH;
};
struct SHA384Functions {
static constexpr auto init = SHA384_Init;
static constexpr auto update = SHA384_Update;
static constexpr auto final = SHA384_Final;
static constexpr size_t digestLength = SHA384_DIGEST_LENGTH;
};
struct SHA512Functions {
static constexpr auto init = SHA512_Init;
static constexpr auto update = SHA512_Update;
static constexpr auto final = SHA512_Final;
static constexpr size_t digestLength = SHA512_DIGEST_LENGTH;
};
}
namespace PAL {
struct CryptoDigestContext {
virtual ~CryptoDigestContext() = default;
virtual void addBytes(const void* input, size_t length) = 0;
virtual Vector<uint8_t> computeHash() = 0;
};
template <typename SHAContext, typename SHAFunctions>
struct CryptoDigestContextImpl : public CryptoDigestContext {
WTF_MAKE_STRUCT_FAST_ALLOCATED;
static std::unique_ptr<CryptoDigestContext> create()
{
return makeUnique<CryptoDigestContextImpl>();
}
CryptoDigestContextImpl()
{
SHAFunctions::init(&m_context);
}
void addBytes(const void* input, size_t length) override
{
SHAFunctions::update(&m_context, input, length);
}
Vector<uint8_t> computeHash() override
{
Vector<uint8_t> result(SHAFunctions::digestLength);
SHAFunctions::final(result.data(), &m_context);
return result;
}
private:
SHAContext m_context;
};
CryptoDigest::CryptoDigest()
{
}
CryptoDigest::~CryptoDigest()
{
}
std::unique_ptr<CryptoDigest> CryptoDigest::create(CryptoDigest::Algorithm algorithm)
{
std::unique_ptr<CryptoDigest> digest(new CryptoDigest);
switch (algorithm) {
case CryptoDigest::Algorithm::SHA_1:
digest->m_context = CryptoDigestContextImpl<SHA_CTX, SHA1Functions>::create();
return digest;
case CryptoDigest::Algorithm::SHA_224:
digest->m_context = CryptoDigestContextImpl<SHA256_CTX, SHA224Functions>::create();
return digest;
case CryptoDigest::Algorithm::SHA_256:
digest->m_context = CryptoDigestContextImpl<SHA256_CTX, SHA256Functions>::create();
return digest;
case CryptoDigest::Algorithm::SHA_384:
digest->m_context = CryptoDigestContextImpl<SHA512_CTX, SHA384Functions>::create();
return digest;
case CryptoDigest::Algorithm::SHA_512:
digest->m_context = CryptoDigestContextImpl<SHA512_CTX, SHA512Functions>::create();
return digest;
}
return nullptr;
}
void CryptoDigest::addBytes(const void* input, size_t length)
{
ASSERT(m_context);
m_context->addBytes(input, length);
}
Vector<uint8_t> CryptoDigest::computeHash()
{
ASSERT(m_context);
return m_context->computeHash();
}
} // namespace PAL
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