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#ifndef CRYPTOPP_TEA_H
#define CRYPTOPP_TEA_H
/** \file
*/
#include "seckey.h"
#include "secblock.h"
NAMESPACE_BEGIN(CryptoPP)
struct TEA_Info : public FixedBlockSize<8>, public FixedKeyLength<16>, public FixedRounds<32>
{
enum {LOG_ROUNDS=5};
static const char *StaticAlgorithmName() {return "TEA";}
};
/// <a href="http://www.weidai.com/scan-mirror/cs.html#TEA">TEA</a>
class TEA : public TEA_Info, public BlockCipherDocumentation
{
class CRYPTOPP_NO_VTABLE Base : public BlockCipherImpl<TEA_Info>
{
public:
void UncheckedSetKey(CipherDir direction, const byte *userKey, unsigned int length);
protected:
static const word32 DELTA;
FixedSizeSecBlock<word32, 4> k;
};
class CRYPTOPP_NO_VTABLE Enc : public Base
{
public:
void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;
};
class CRYPTOPP_NO_VTABLE Dec : public Base
{
public:
void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;
};
public:
typedef BlockCipherFinal<ENCRYPTION, Enc> Encryption;
typedef BlockCipherFinal<DECRYPTION, Dec> Decryption;
};
typedef TEA::Encryption TEAEncryption;
typedef TEA::Decryption TEADecryption;
NAMESPACE_END
#endif
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