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1 files changed, 58 insertions, 0 deletions

diff --git a/twofish.h b/twofish.h
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+#ifndef CRYPTOPP_TWOFISH_H
+#define CRYPTOPP_TWOFISH_H
+
+/** \file
+*/
+
+#include "seckey.h"
+#include "secblock.h"
+
+NAMESPACE_BEGIN(CryptoPP)
+
+struct Twofish_Info : public FixedBlockSize<16>, public VariableKeyLength<16, 0, 32>, FixedRounds<16>
+{
+	static const char *StaticAlgorithmName() {return "Twofish";}
+};
+
+/// <a href="http://www.weidai.com/scan-mirror/cs.html#Twofish">Twofish</a>
+class Twofish : public Twofish_Info, public BlockCipherDocumentation
+{
+	class Base : public BlockCipherBaseTemplate<Twofish_Info>
+	{
+	public:
+		void UncheckedSetKey(CipherDir direction, const byte *userKey, unsigned int length);
+
+	protected:
+		static word32 h0(word32 x, const word32 *key, unsigned int kLen);
+		static word32 h(word32 x, const word32 *key, unsigned int kLen);
+
+		static const byte q[2][256];
+		static const word32 mds[4][256];
+
+		FixedSizeSecBlock<word32, 40> m_k;
+		FixedSizeSecBlock<word32[256], 4> m_s;
+	};
+
+	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 Twofish::Encryption TwofishEncryption;
+typedef Twofish::Decryption TwofishDecryption;
+
+NAMESPACE_END
+
+#endif