diff options
Diffstat (limited to 'tea.h')
-rw-r--r-- | tea.h | 53 |
1 files changed, 53 insertions, 0 deletions
@@ -0,0 +1,53 @@ +#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 Base : public BlockCipherBaseTemplate<TEA_Info> + { + public: + void UncheckedSetKey(CipherDir direction, const byte *userKey, unsigned int length); + + protected: + static const word32 DELTA; + FixedSizeSecBlock<word32, 4> k; + }; + + class Enc : public Base + { + public: + void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const; + }; + + class Dec : public Base + { + public: + void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const; + }; + +public: + typedef BlockCipherTemplate<ENCRYPTION, Enc> Encryption; + typedef BlockCipherTemplate<DECRYPTION, Dec> Decryption; +}; + +typedef TEA::Encryption TEAEncryption; +typedef TEA::Decryption TEADecryption; + +NAMESPACE_END + +#endif |