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// **********************************************************************
//
// Copyright (c) 2003-2016 ZeroC, Inc. All rights reserved.
//
// This copy of Ice is licensed to you under the terms described in the
// ICE_LICENSE file included in this distribution.
//
// **********************************************************************
#include <IceUtil/SHA1.h>
#ifndef ICE_OS_WINRT
# if defined(_WIN32)
# include <Wincrypt.h>
# include <IceUtil/Exception.h>
# elif defined(__APPLE__)
# include <CommonCrypto/CommonDigest.h>
# else
# include <openssl/sha.h>
# endif
#endif
using namespace std;
using namespace IceUtil;
#ifndef ICE_OS_WINRT
namespace IceUtilInternal
{
class SHA1::Hasher
{
public:
Hasher();
# ifdef _WIN32
~Hasher();
#endif
void update(const unsigned char*, std::size_t);
void finalize(std::vector<unsigned char>&);
private:
// noncopyable
Hasher(const Hasher&);
Hasher operator=(const Hasher&);
# if defined (_WIN32)
HCRYPTPROV _ctx;
HCRYPTHASH _hash;
# elif defined(__APPLE__)
CC_SHA1_CTX _ctx;
# else
SHA_CTX _ctx;
# endif
};
}
# if defined(_WIN32)
namespace
{
const int SHA_DIGEST_LENGTH = 20;
}
IceUtilInternal::SHA1::Hasher::Hasher() :
_ctx(0),
_hash(0)
{
if(!CryptAcquireContext(&_ctx, 0, MS_DEF_PROV, PROV_RSA_FULL, CRYPT_VERIFYCONTEXT))
{
throw IceUtil::SyscallException(__FILE__, __LINE__, GetLastError());
}
if(!CryptCreateHash(_ctx, CALG_SHA1, 0, 0, &_hash))
{
throw IceUtil::SyscallException(__FILE__, __LINE__, GetLastError());
}
}
IceUtilInternal::SHA1::Hasher::~Hasher()
{
if(_hash)
{
CryptDestroyHash(_hash);
}
if(_ctx)
{
CryptReleaseContext(_ctx, 0);
}
}
# elif defined(__APPLE__)
IceUtilInternal::SHA1::Hasher::Hasher()
{
CC_SHA1_Init(&_ctx);
}
# else
IceUtilInternal::SHA1::Hasher::Hasher()
{
SHA1_Init(&_ctx);
}
# endif
void
IceUtilInternal::SHA1::Hasher::update(const unsigned char* data, size_t length)
{
# if defined(_WIN32)
if(!CryptHashData(_hash, data, static_cast<DWORD>(length), 0))
{
throw IceUtil::SyscallException(__FILE__, __LINE__, GetLastError());
}
# elif defined(__APPLE__)
CC_SHA1_Update(&_ctx, reinterpret_cast<const void*>(data), length);
# else
SHA1_Update(&_ctx, reinterpret_cast<const void*>(data), length);
# endif
}
void
IceUtilInternal::SHA1::Hasher::finalize(vector<unsigned char>& md)
{
# if defined(_WIN32)
md.resize(SHA_DIGEST_LENGTH);
DWORD length = SHA_DIGEST_LENGTH;
if(!CryptGetHashParam(_hash, HP_HASHVAL, &md[0], &length, 0))
{
throw IceUtil::SyscallException(__FILE__, __LINE__, GetLastError());
}
# elif defined(__APPLE__)
md.resize(CC_SHA1_DIGEST_LENGTH);
CC_SHA1_Final(&md[0], &_ctx);
# else
md.resize(SHA_DIGEST_LENGTH);
SHA1_Final(&md[0], &_ctx);
# endif
}
IceUtilInternal::SHA1::SHA1() :
_hasher(new Hasher())
{
}
IceUtilInternal::SHA1::~SHA1()
{
}
void
IceUtilInternal::SHA1::update(const unsigned char* data, std::size_t length)
{
_hasher->update(data, length);
}
void
IceUtilInternal::SHA1::finalize(std::vector<unsigned char>& md)
{
_hasher->finalize(md);
}
#endif
void
IceUtilInternal::sha1(const unsigned char* data, size_t length, vector<unsigned char>& md)
{
#if defined(ICE_OS_WINRT)
auto dataA =
ref new Platform::Array<unsigned char>(const_cast<unsigned char*>(data), static_cast<unsigned int>(length));
auto hasher = Windows::Security::Cryptography::Core::HashAlgorithmProvider::OpenAlgorithm("SHA1");
auto hashed = hasher->HashData(Windows::Security::Cryptography::CryptographicBuffer::CreateFromByteArray(dataA));
auto reader = ::Windows::Storage::Streams::DataReader::FromBuffer(hashed);
md.resize(reader->UnconsumedBufferLength);
if(!md.empty())
{
reader->ReadBytes(::Platform::ArrayReference<unsigned char>(&md[0], static_cast<unsigned int>(md.size())));
}
#elif defined(_WIN32)
SHA1 hasher;
hasher.update(data, length);
hasher.finalize(md);
#elif defined(__APPLE__)
md.resize(CC_SHA1_DIGEST_LENGTH);
CC_SHA1(&data[0], length, &md[0]);
#else
md.resize(SHA_DIGEST_LENGTH);
::SHA1(&data[0], length, &md[0]);
#endif
}
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