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Implementation of the Licensing System for a Software Product

, , 5 Aug 2010 CPOL
This article is devoted to the development of the key licensing system for the applications.
bin.zip
bin
ClientTest.exe
DigitalSignature.exe
src.zip
src
src
ClientTest
keys
public.bin
cryptopp560
adhoc.cpp.copied
adhoc.cpp.proto
cryptdll.dsp
cryptest.dsp
cryptest.dsw
cryptest_bds.bdsgroup
cryptest_bds.bdsproj
cryptest_bds.bpf
cryptlib.dsp
cryptlib_bds.bdsproj
dlltest.dsp
Doxyfile
GNUmakefile
DigitalSignature
keys
private.bin
public.bin
Utils
#ifndef CRYPTOPP_CAST_H
#define CRYPTOPP_CAST_H

/** \file
*/

#include "seckey.h"
#include "secblock.h"

NAMESPACE_BEGIN(CryptoPP)

class CAST
{
protected:
	static const word32 S[8][256];
};

//! algorithm info
struct CAST128_Info : public FixedBlockSize<8>, public VariableKeyLength<16, 5, 16>
{
	static const char *StaticAlgorithmName() {return "CAST-128";}
};

/// <a href="http://www.weidai.com/scan-mirror/cs.html#CAST-128">CAST-128</a>
class CAST128 : public CAST128_Info, public BlockCipherDocumentation
{
	class CRYPTOPP_NO_VTABLE Base : public CAST, public BlockCipherImpl<CAST128_Info>
	{
	public:
		void UncheckedSetKey(const byte *userKey, unsigned int length, const NameValuePairs &params);

	protected:
		bool reduced;
		FixedSizeSecBlock<word32, 32> K;
	};

	class CRYPTOPP_NO_VTABLE Enc : public Base
	{
	public:
		void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;
	};

	class CRYPTOPP_NO_VTABLE Dec : public Base
	{
	public:
		void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;
	};

public:
	typedef BlockCipherFinal<ENCRYPTION, Enc> Encryption;
	typedef BlockCipherFinal<DECRYPTION, Dec> Decryption;
};

//! algorithm info
struct CAST256_Info : public FixedBlockSize<16>, public VariableKeyLength<16, 16, 32>
{
	static const char *StaticAlgorithmName() {return "CAST-256";}
};

//! <a href="http://www.weidai.com/scan-mirror/cs.html#CAST-256">CAST-256</a>
class CAST256 : public CAST256_Info, public BlockCipherDocumentation
{
	class CRYPTOPP_NO_VTABLE Base : public CAST, public BlockCipherImpl<CAST256_Info>
	{
	public:
		void UncheckedSetKey(const byte *userKey, unsigned int length, const NameValuePairs &params);
		void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;

	protected:
		static const word32 t_m[8][24];
		static const unsigned int t_r[8][24];

		static void Omega(int i, word32 kappa[8]);

		FixedSizeSecBlock<word32, 8*12> K;
	};

public:
	typedef BlockCipherFinal<ENCRYPTION, Base> Encryption;
	typedef BlockCipherFinal<DECRYPTION, Base> Decryption;
};

typedef CAST128::Encryption CAST128Encryption;
typedef CAST128::Decryption CAST128Decryption;

typedef CAST256::Encryption CAST256Encryption;
typedef CAST256::Decryption CAST256Decryption;

NAMESPACE_END

#endif

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This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

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About the Authors

Apriorit Inc
Apriorit Inc.
Ukraine Ukraine
ApriorIT is a Software Research and Development company that works in advanced knowledge-intensive scopes.
 
Company offers integrated research&development services for the software projects in such directions as Corporate Security, Remote Control, Mobile Development, Embedded Systems, Virtualization, Drivers and others.
 
Official site http://www.apriorit.com
Group type: Organisation

31 members

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Sergii Bratus
Software Developer Apriorit Inc.
Ukraine Ukraine
No Biography provided

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