md2.h

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// md2.h - originally written and placed in the public domain by Wei Dai
 
/// \file md2.h
/// \brief Classes for the MD2 message digest
/// \since Crypto++ 3.0
 
#ifndef CRYPTOPP_MD2_H
#define CRYPTOPP_MD2_H
 
#include "cryptlib.h"
#include "secblock.h"
 
NAMESPACE_BEGIN(CryptoPP)
 
namespace Weak1 {
 
/// \brief MD2 message digest
/// \sa <a href="http://www.cryptolounge.org/wiki/MD2">MD2</a>
/// \since Crypto++ 3.0
class MD2 : public HashTransformation
{
public:
    CRYPTOPP_STATIC_CONSTEXPR const char* StaticAlgorithmName() {return "MD2";}
 
    MD2();
    void Update(const byte *input, size_t length);
    void TruncatedFinal(byte *hash, size_t size);
    unsigned int DigestSize() const {return DIGESTSIZE;}
    unsigned int BlockSize() const {return BLOCKSIZE;}
    std::string AlgorithmName() const {return StaticAlgorithmName();}
 
    CRYPTOPP_CONSTANT(DIGESTSIZE = 16);
    CRYPTOPP_CONSTANT(BLOCKSIZE = 16);
 
private:
    void Transform();
    void Init();
    SecByteBlock m_X, m_C, m_buf;
    unsigned int m_count;
};
 
}
#if CRYPTOPP_ENABLE_NAMESPACE_WEAK >= 1
namespace Weak {using namespace Weak1;}     // import Weak1 into CryptoPP::Weak
#else
using namespace Weak1;  // import Weak1 into CryptoPP with warning
#ifdef __GNUC__
#warning "You may be using a weak algorithm that has been retained for backwards compatibility. Please '#define CRYPTOPP_ENABLE_NAMESPACE_WEAK 1' before including this .h file and prepend the class name with 'Weak::' to remove this warning."
#else
#pragma message("You may be using a weak algorithm that has been retained for backwards compatibility. Please '#define CRYPTOPP_ENABLE_NAMESPACE_WEAK 1' before including this .h file and prepend the class name with 'Weak::' to remove this warning.")
#endif
#endif
 
NAMESPACE_END
 
#endif