WinCNGMessageDigestFactory.h

#ifndef TENDUKE_CRYPTO_WIN_CNG_WINCNGMESSAGEDIGESTFACTORY_H
#define TENDUKE_CRYPTO_WIN_CNG_WINCNGMESSAGEDIGESTFACTORY_H
 
#include "crypto/MessageDigestFactory.h"
 
#include <mutex>
 
#include <windows.h>
#include <bcrypt.h>
 
namespace tenduke { namespace crypto { namespace win { namespace cng {
 
class WinCNGAlgorithms
{
 
public:
    WinCNGAlgorithms();
    ~WinCNGAlgorithms();
 
public:
    ::BCRYPT_ALG_HANDLE get(::tenduke::crypto::MessageDigest::Algorithm algorithm);
 
private:
    // Very simple, we only support one alg.
    ::BCRYPT_ALG_HANDLE sha256Handle;
    std::recursive_mutex mutex;
};
 

class WinCNGMessageDigestFactory : public ::tenduke::crypto::MessageDigestFactory
{
 
public:
    WinCNGMessageDigestFactory();
 
    // ::tenduke::crypt::MessageDigestFactory implementation
public:
    std::unique_ptr<::tenduke::crypto::MessageDigest> create(::tenduke::crypto::MessageDigest::Algorithm algorithm) const override;
 
private:
    const std::shared_ptr<WinCNGAlgorithms> algorithms;
};
 
}}}}
 
#endif //TENDUKE_CRYPTO_WIN_CNG_WINCNGMESSAGEDIGESTFACTORY_H