Initial revision

git-svn-id: svn://svn.code.sf.net/p/cryptopp/code/trunk/c5@2 57ff6487-cd31-0410-9ec3-f628ee90f5f0

1 files changed, 53 insertions, 0 deletions

diff --git a/tea.h b/tea.h
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--- /dev/null
+++ b/tea.h
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+#ifndef CRYPTOPP_TEA_H
+#define CRYPTOPP_TEA_H
+
+/** \file
+*/
+
+#include "seckey.h"
+#include "secblock.h"
+
+NAMESPACE_BEGIN(CryptoPP)
+
+struct TEA_Info : public FixedBlockSize<8>, public FixedKeyLength<16>, public FixedRounds<32>
+{
+	enum {LOG_ROUNDS=5};
+	static const char *StaticAlgorithmName() {return "TEA";}
+};
+
+/// <a href="http://www.weidai.com/scan-mirror/cs.html#TEA">TEA</a>
+class TEA : public TEA_Info, public BlockCipherDocumentation
+{
+	class Base : public BlockCipherBaseTemplate<TEA_Info>
+	{
+	public:
+		void UncheckedSetKey(CipherDir direction, const byte *userKey, unsigned int length);
+
+	protected:
+		static const word32 DELTA;
+		FixedSizeSecBlock<word32, 4> k;
+	};
+
+	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 TEA::Encryption TEAEncryption;
+typedef TEA::Decryption TEADecryption;
+
+NAMESPACE_END
+
+#endif