Initial revision

1 files changed, 59 insertions, 0 deletions

diff --git a/skipjack.h b/skipjack.h
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+++ b/skipjack.h
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+#ifndef CRYPTOPP_SKIPJACK_H
+#define CRYPTOPP_SKIPJACK_H
+
+/** \file
+*/
+
+#include "seckey.h"
+#include "secblock.h"
+
+NAMESPACE_BEGIN(CryptoPP)
+
+struct SKIPJACK_Info : public FixedBlockSize<8>, public FixedKeyLength<10>
+{
+	static const char *StaticAlgorithmName() {return "SKIPJACK";}
+};
+
+/// <a href="http://www.weidai.com/scan-mirror/cs.html#SKIPJACK">SKIPJACK</a>
+class SKIPJACK : public SKIPJACK_Info, public BlockCipherDocumentation
+{
+	class Base : public BlockCipherBaseTemplate<SKIPJACK_Info>
+	{
+	public:
+		void UncheckedSetKey(CipherDir direction, const byte *userKey, unsigned int length);
+
+	protected:
+		static const byte fTable[256];
+
+		FixedSizeSecBlock<byte[256], 10> tab;
+	};
+
+	class Enc : public Base
+	{
+	public:
+		void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;
+	private:
+		static const byte Se[256];
+		static const word32 Te[4][256];
+	};
+
+	class Dec : public Base
+	{
+	public:
+		void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;
+	private:
+		static const byte Sd[256];
+		static const word32 Td[4][256];
+	};
+
+public:
+	typedef BlockCipherTemplate<ENCRYPTION, Enc> Encryption;
+	typedef BlockCipherTemplate<DECRYPTION, Dec> Decryption;
+};
+
+typedef SKIPJACK::Encryption SKIPJACKEncryption;
+typedef SKIPJACK::Decryption SKIPJACKDecryption;
+
+NAMESPACE_END
+
+#endif