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