00001
#ifndef CRYPTOPP_TEA_H
00002
#define CRYPTOPP_TEA_H
00003
00004
00005
00006
00007
#include "seckey.h"
00008
#include "secblock.h"
00009
00010 NAMESPACE_BEGIN(CryptoPP)
00011
00012 struct TEA_Info : public
FixedBlockSize<8>, public
FixedKeyLength<16>, public
FixedRounds<32>
00013 {
00014
enum {LOG_ROUNDS=5};
00015
static const char *StaticAlgorithmName() {
return "TEA";}
00016 };
00017
00018
00019 class TEA :
public TEA_Info,
public BlockCipherDocumentation
00020 {
00021
class Base :
public BlockCipherBaseTemplate<TEA_Info>
00022 {
00023
public:
00024
void UncheckedSetKey(
CipherDir direction,
const byte *userKey,
unsigned int length);
00025
00026
protected:
00027
static const word32 DELTA;
00028 FixedSizeSecBlock<word32, 4> k;
00029 };
00030
00031
class Enc :
public Base
00032 {
00033
public:
00034
void ProcessAndXorBlock(
const byte *inBlock,
const byte *xorBlock, byte *outBlock)
const;
00035 };
00036
00037
class Dec :
public Base
00038 {
00039
public:
00040
void ProcessAndXorBlock(
const byte *inBlock,
const byte *xorBlock, byte *outBlock)
const;
00041 };
00042
00043
public:
00044 typedef BlockCipherTemplate<ENCRYPTION, Enc> Encryption;
00045 typedef BlockCipherTemplate<DECRYPTION, Dec> Decryption;
00046 };
00047
00048
typedef TEA::Encryption TEAEncryption;
00049
typedef TEA::Decryption TEADecryption;
00050
00051 NAMESPACE_END
00052
00053
#endif