60 lines
1.7 KiB
C++
60 lines
1.7 KiB
C++
// wake.h - originally written and placed in the public domain by Wei Dai
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/// \file wake.h
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/// \brief Classes for WAKE stream cipher
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#ifndef CRYPTOPP_WAKE_H
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#define CRYPTOPP_WAKE_H
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#include "seckey.h"
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#include "secblock.h"
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#include "strciphr.h"
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NAMESPACE_BEGIN(CryptoPP)
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/// \brief WAKE stream cipher information
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/// \tparam B Endianness of the stream cipher
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/// \since Crypto++ 1.0
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template <class B = BigEndian>
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struct WAKE_OFB_Info : public FixedKeyLength<32>
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{
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CRYPTOPP_STATIC_CONSTEXPR const char* StaticAlgorithmName() {return B::ToEnum() == LITTLE_ENDIAN_ORDER ? "WAKE-OFB-LE" : "WAKE-OFB-BE";}
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};
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class CRYPTOPP_NO_VTABLE WAKE_Base
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{
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protected:
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word32 M(word32 x, word32 y);
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void GenKey(word32 k0, word32 k1, word32 k2, word32 k3);
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word32 t[257];
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word32 r3, r4, r5, r6;
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};
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/// \brief WAKE stream cipher operation
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/// \tparam B Endianness of the stream cipher
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/// \since Crypto++ 1.0
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template <class B = BigEndian>
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class CRYPTOPP_NO_VTABLE WAKE_Policy : public AdditiveCipherConcretePolicy<word32, 1, 64>, protected WAKE_Base
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{
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protected:
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void CipherSetKey(const NameValuePairs ¶ms, const byte *key, size_t length);
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// OFB
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void OperateKeystream(KeystreamOperation operation, byte *output, const byte *input, size_t iterationCount);
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bool CipherIsRandomAccess() const {return false;}
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};
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/// \brief WAKE stream cipher
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/// \tparam B Endianness of the stream cipher
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/// \since Crypto++ 1.0
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template <class B = BigEndian>
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struct WAKE_OFB : public WAKE_OFB_Info<B>, public SymmetricCipherDocumentation
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{
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typedef SymmetricCipherFinal<ConcretePolicyHolder<WAKE_Policy<B>, AdditiveCipherTemplate<> >, WAKE_OFB_Info<B> > Encryption;
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typedef Encryption Decryption;
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};
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NAMESPACE_END
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#endif
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