1 files changed, 95 insertions, 0 deletions
diff --git a/external/crypto++-5.6.3/rc2.h b/external/crypto++-5.6.3/rc2.h
new file mode 100644
index 0000000..406bd0c
--- /dev/null
+++ b/external/crypto++-5.6.3/rc2.h
@@ -0,0 +1,95 @@
+// rc2.h - written and placed in the public domain by Wei Dai
+
+//! \file rc2.h
+//! \brief Classes for the RC2 block cipher
+
+#ifndef CRYPTOPP_RC2_H
+#define CRYPTOPP_RC2_H
+
+#include "seckey.h"
+#include "secblock.h"
+#include "algparam.h"
+
+NAMESPACE_BEGIN(CryptoPP)
+
+//! \class RC2_Info
+//! \brief The RC2 cipher's key, iv, block size and name information.
+struct RC2_Info : public FixedBlockSize<8>, public VariableKeyLength<16, 1, 128>
+{
+	CRYPTOPP_CONSTANT(DEFAULT_EFFECTIVE_KEYLENGTH = 1024)
+	CRYPTOPP_CONSTANT(MAX_EFFECTIVE_KEYLENGTH = 1024)
+	static const char *StaticAlgorithmName() {return "RC2";}
+};
+
+//! \class RC2
+//! \brief The RC2 stream cipher
+//! \sa <a href="http://www.weidai.com/scan-mirror/cs.html#RC2">RC2</a> on the Crypto Lounge.
+class RC2 : public RC2_Info, public BlockCipherDocumentation
+{
+	//! \class Base
+	//! \brief Class specific methods used to operate the cipher.
+	//! \details Implementations and overrides in \p Base apply to both \p ENCRYPTION and \p DECRYPTION directions
+	class CRYPTOPP_NO_VTABLE Base : public BlockCipherImpl<RC2_Info>
+	{
+	public:
+		void UncheckedSetKey(const byte *userKey, unsigned int length, const NameValuePairs &params);
+		unsigned int OptimalDataAlignment() const {return GetAlignmentOf<word16>();}
+
+	protected:
+		FixedSizeSecBlock<word16, 64> K;  // expanded key table
+	};
+
+	//! \class Enc
+	//! \brief Class specific methods used to operate the cipher in the forward direction.
+	//! \details Implementations and overrides in \p Enc apply to \p ENCRYPTION.
+	class CRYPTOPP_NO_VTABLE Enc : public Base
+	{
+	public:
+		void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;
+	};
+
+	//! \class Dec
+	//! \brief Class specific methods used to operate the cipher in the reverse direction.
+	//! \details Implementations and overrides in \p Dec apply to \p DECRYPTION.
+	class CRYPTOPP_NO_VTABLE Dec : public Base
+	{
+	public:
+		void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;
+	};
+
+public:
+
+	//! \class Encryption
+	//! \brief Class specific methods used to operate the cipher in the forward direction.
+	//! \details Implementations and overrides in \p Encryption apply to \p ENCRYPTION.
+	class Encryption : public BlockCipherFinal<ENCRYPTION, Enc>
+	{
+	public:
+		Encryption() {}
+		Encryption(const byte *key, size_t keyLen=DEFAULT_KEYLENGTH)
+			{SetKey(key, keyLen);}
+		Encryption(const byte *key, size_t keyLen, int effectiveKeyLen)
+			{SetKey(key, keyLen, MakeParameters("EffectiveKeyLength", effectiveKeyLen));}
+	};
+
+	//! \class Decryption
+	//! \brief Class specific methods used to operate the cipher in the reverse direction.
+	//! \details Implementations and overrides in \p Decryption apply to \p DECRYPTION.
+	class Decryption : public BlockCipherFinal<DECRYPTION, Dec>
+	{
+	public:
+		Decryption() {}
+		Decryption(const byte *key, size_t keyLen=DEFAULT_KEYLENGTH)
+			{SetKey(key, keyLen);}
+		Decryption(const byte *key, size_t keyLen, int effectiveKeyLen)
+			{SetKey(key, keyLen, MakeParameters("EffectiveKeyLength", effectiveKeyLen));}
+	};
+};
+
+typedef RC2::Encryption RC2Encryption;
+typedef RC2::Decryption RC2Decryption;
+
+NAMESPACE_END
+
+#endif
+