#ifndef CRYPTOPP_PANAMA_H#define CRYPTOPP_PANAMA_H#include "seckey.h"#include "secblock.h"#include "iterhash.h"#include "strciphr.h"NAMESPACE_BEGIN(CryptoPP)/// base class, do not use directlytemplate <class B>class Panama{public:	void Reset();	void Iterate(unsigned int count, const word32 *p=NULL, word32 *z=NULL, const word32 *y=NULL);protected:	typedef word32 Stage[8];	enum {STAGES = 32};	FixedSizeSecBlock<word32, 17*2 + STAGES*sizeof(Stage)> m_state;	unsigned int m_bstart;};/// <a href="http://www.weidai.com/scan-mirror/md.html#Panama">Panama Hash</a>template <class B = LittleEndian>class PanamaHash : protected Panama<B>, public IteratedHash<word32, NativeByteOrder, 32>{public:	enum {DIGESTSIZE = 32};	PanamaHash() : IteratedHash<word32, NativeByteOrder, 32>(0) {Panama<B>::Reset();}	unsigned int DigestSize() const {return DIGESTSIZE;}	void TruncatedFinal(byte *hash, unsigned int size);protected:	void Init() {Panama<B>::Reset();}	void vTransform(const word32 *data) {Iterate(1, data);}	// push	unsigned int HashMultipleBlocks(const word32 *input, unsigned int length);};//! .template <class B = LittleEndian>class PanamaMAC_Base : public PanamaHash<B>, public VariableKeyLength<32, 0, UINT_MAX>, public MessageAuthenticationCode{public:	void UncheckedSetKey(const byte *userKey, unsigned int keylength)	{		m_key.Assign(userKey, keylength);		Restart();	}	static const char * StaticAlgorithmName() {return B::ToEnum() == BIG_ENDIAN ? "Panama-BE" : "Panama-LE";}protected:	void Init()	{		PanamaHash<B>::Init();		Update(m_key, m_key.size());	}	SecByteBlock m_key;};/// Panama MACtemplate <class B = LittleEndian>class PanamaMAC : public MessageAuthenticationCodeTemplate<PanamaMAC_Base<B> >{public: 	PanamaMAC() {}	PanamaMAC(const byte *key, unsigned int length=PanamaMAC_Base<B>::DEFAULT_KEYLENGTH)		{SetKey(key, length);}};//! .template <class B>struct PanamaCipherInfo : public VariableKeyLength<32, 32, 64, 32, SimpleKeyingInterface::NOT_RESYNCHRONIZABLE>{	static const char * StaticAlgorithmName() {return B::ToEnum() == BIG_ENDIAN_ORDER ? "Panama-BE" : "Panama-LE";}};//! .template <class B>class PanamaCipherPolicy : public AdditiveCipherConcretePolicy<word32, 32>, 							public PanamaCipherInfo<B>,							protected Panama<B>{protected:	void CipherSetKey(const NameValuePairs &params, const byte *key, unsigned int length);	void OperateKeystream(KeystreamOperation operation, byte *output, const byte *input, unsigned int iterationCount);	bool IsRandomAccess() const {return false;}};//! <a href="http://www.weidai.com/scan-mirror/cs.html#Panama">Panama Stream Cipher</a>template <class B = LittleEndian>struct PanamaCipher : public PanamaCipherInfo<B>, public SymmetricCipherDocumentation{	typedef SymmetricCipherFinalTemplate<ConcretePolicyHolder<PanamaCipherPolicy<B>, AdditiveCipherTemplate<> > > Encryption;	typedef Encryption Decryption;};NAMESPACE_END#endif