1 files changed, 58 insertions, 0 deletions

diff --git a/lib/cryptopp/square.h b/lib/cryptopp/square.h
new file mode 100644
index 000000000..d7e23c284
--- /dev/null
+++ b/lib/cryptopp/square.h
@@ -0,0 +1,58 @@
+#ifndef CRYPTOPP_SQUARE_H
+#define CRYPTOPP_SQUARE_H
+
+/** \file
+*/
+
+#include "seckey.h"
+#include "secblock.h"
+
+NAMESPACE_BEGIN(CryptoPP)
+
+//! _
+struct Square_Info : public FixedBlockSize<16>, public FixedKeyLength<16>, FixedRounds<8>
+{
+	static const char *StaticAlgorithmName() {return "Square";}
+};
+
+/// <a href="http://www.weidai.com/scan-mirror/cs.html#Square">Square</a>
+class Square : public Square_Info, public BlockCipherDocumentation
+{
+	class CRYPTOPP_NO_VTABLE Base : public BlockCipherImpl<Square_Info>
+	{
+	public:
+		void UncheckedSetKey(const byte *userKey, unsigned int length, const NameValuePairs &params);
+
+	protected:
+		FixedSizeSecBlock<word32, 4*(ROUNDS+1)> m_roundkeys;
+	};
+
+	class CRYPTOPP_NO_VTABLE 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 CRYPTOPP_NO_VTABLE 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 BlockCipherFinal<ENCRYPTION, Enc> Encryption;
+	typedef BlockCipherFinal<DECRYPTION, Dec> Decryption;
+};
+
+typedef Square::Encryption SquareEncryption;
+typedef Square::Decryption SquareDecryption;
+
+NAMESPACE_END
+
+#endif