#ifndef CRYPTOPP_SHA_H#define CRYPTOPP_SHA_H#include "iterhash.h"NAMESPACE_BEGIN(CryptoPP)/// <a href="http://www.weidai.com/scan-mirror/md.html#SHA-1">SHA-1</a>class SHA : public IteratedHashWithStaticTransform<word32, BigEndian, 64, SHA>{public:	enum {DIGESTSIZE = 20};	SHA() : IteratedHashWithStaticTransform<word32, BigEndian, 64, SHA>(DIGESTSIZE) {Init();}	static void Transform(word32 *digest, const word32 *data);	static const char *StaticAlgorithmName() {return "SHA-1";}protected:	void Init();};typedef SHA SHA1;//! implements the SHA-256 standardclass SHA256 : public IteratedHashWithStaticTransform<word32, BigEndian, 64, SHA256>{public:	enum {DIGESTSIZE = 32};	SHA256() : IteratedHashWithStaticTransform<word32, BigEndian, 64, SHA256>(DIGESTSIZE) {Init();}	static void Transform(word32 *digest, const word32 *data);	static const char *StaticAlgorithmName() {return "SHA-256";}protected:	void Init();	static const word32 K[64];};#ifdef WORD64_AVAILABLE//! implements the SHA-512 standardclass SHA512 : public IteratedHashWithStaticTransform<word64, BigEndian, 128, SHA512>{public:	enum {DIGESTSIZE = 64};	SHA512() : IteratedHashWithStaticTransform<word64, BigEndian, 128, SHA512>(DIGESTSIZE) {Init();}	static void Transform(word64 *digest, const word64 *data);	static const char *StaticAlgorithmName() {return "SHA-512";}protected:	void Init();	static const word64 K[80];};//! implements the SHA-384 standardclass SHA384 : public IteratedHashWithStaticTransform<word64, BigEndian, 128, SHA512>{public:	enum {DIGESTSIZE = 48};	SHA384() : IteratedHashWithStaticTransform<word64, BigEndian, 128, SHA512>(64) {Init();}	unsigned int DigestSize() const {return DIGESTSIZE;};	static const char *StaticAlgorithmName() {return "SHA-384";}protected:	void Init();};#endifNAMESPACE_END#endif