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// hight.h - written and placed in the public domain by Kim Sung Hee and Jeffrey Walton
// Based on "HIGHT: A New Block Cipher Suitable for Low-Resource Device"
// by Deukjo Hong, Jaechul Sung, Seokhie Hong, Jongin Lim, Sangjin Lee,
// Bon-Seok Koo, Changhoon Lee, Donghoon Chang, Jesang Lee, Kitae Jeong,
// Hyun Kim, Jongsung Kim, and Seongtaek Chee
/// \file hight.h
/// \brief Classes for the HIGHT block cipher
/// \since Crypto++ 8.0
#ifndef CRYPTOPP_HIGHT_H
#define CRYPTOPP_HIGHT_H
#include "config.h"
#include "seckey.h"
#include "secblock.h"
#include "algparam.h"
NAMESPACE_BEGIN(CryptoPP)
/// \brief HIGHT block cipher information
/// \since Crypto++ 8.0
struct HIGHT_Info : public FixedBlockSize<8>, public FixedKeyLength<16>
{
static const std::string StaticAlgorithmName()
{
// Format is Cipher-Blocksize
return "HIGHT";
}
};
/// \brief HIGHT 64-bit block cipher
/// \details HIGHT provides 64-bit block size. The valid key size is 128-bits.
/// \note Crypto++ provides a byte oriented implementation
/// \sa <a href="http://www.cryptopp.com/wiki/HIGHT">HIGHT</a>,
/// <a href="https://seed.kisa.or.kr/">Korea Internet & Security
/// Agency</a> website
/// \since Crypto++ 8.0
class CRYPTOPP_NO_VTABLE HIGHT : public HIGHT_Info, public BlockCipherDocumentation
{
public:
/// \brief HIGHT block cipher transformation functions
/// \details Provides implementation common to encryption and decryption
/// \since Crypto++ 8.0
class CRYPTOPP_NO_VTABLE Base : public BlockCipherImpl<HIGHT_Info>
{
protected:
void UncheckedSetKey(const byte *userKey, unsigned int keyLength, const NameValuePairs ¶ms);
FixedSizeSecBlock<byte, 136> m_rkey;
mutable FixedSizeSecBlock<word32, 8> m_xx;
};
/// \brief Encryption transformation
/// \details Enc provides implementation for encryption transformation.
/// \since Crypto++ 8.0
class CRYPTOPP_NO_VTABLE Enc : public Base
{
public:
void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;
};
/// \brief Encryption transformation
/// \details Dec provides implementation for decryption transformation.
/// \since Crypto++ 8.0
class CRYPTOPP_NO_VTABLE Dec : public Base
{
public:
void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;
};
typedef BlockCipherFinal<ENCRYPTION, Enc> Encryption;
typedef BlockCipherFinal<DECRYPTION, Dec> Decryption;
};
typedef HIGHT::Encryption HIGHTEncryption;
typedef HIGHT::Decryption HIGHTDecryption;
NAMESPACE_END
#endif // CRYPTOPP_HIGHT_H
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