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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_RSA_H
#define CRYPTOPP_RSA_H

/** \file
	This file contains classes that implement the RSA
	ciphers and signature schemes as defined in PKCS #1 v2.0.
*/

#include "pubkey.h"
#include "asn.h"
#include "pkcspad.h"
#include "oaep.h"
#include "emsa2.h"

NAMESPACE_BEGIN(CryptoPP)

//! _
class CRYPTOPP_DLL RSAFunction : public TrapdoorFunction, public X509PublicKey
{
	typedef RSAFunction ThisClass;

public:
	void Initialize(const Integer &n, const Integer &e)
		{m_n = n; m_e = e;}

	// X509PublicKey
	OID GetAlgorithmID() const;
	void BERDecodePublicKey(BufferedTransformation &bt, bool parametersPresent, size_t size);
	void DEREncodePublicKey(BufferedTransformation &bt) const;

	// CryptoMaterial
	bool Validate(RandomNumberGenerator &rng, unsigned int level) const;
	bool GetVoidValue(const char *name, const std::type_info &valueType, void *pValue) const;
	void AssignFrom(const NameValuePairs &source);

	// TrapdoorFunction
	Integer ApplyFunction(const Integer &x) const;
	Integer PreimageBound() const {return m_n;}
	Integer ImageBound() const {return m_n;}

	// non-derived
	const Integer & GetModulus() const {return m_n;}
	const Integer & GetPublicExponent() const {return m_e;}

	void SetModulus(const Integer &n) {m_n = n;}
	void SetPublicExponent(const Integer &e) {m_e = e;}

protected:
	Integer m_n, m_e;
};

//! _
class CRYPTOPP_DLL InvertibleRSAFunction : public RSAFunction, public TrapdoorFunctionInverse, public PKCS8PrivateKey
{
	typedef InvertibleRSAFunction ThisClass;

public:
	void Initialize(RandomNumberGenerator &rng, unsigned int modulusBits, const Integer &e = 17);
	void Initialize(const Integer &n, const Integer &e, const Integer &d, const Integer &p, const Integer &q, const Integer &dp, const Integer &dq, const Integer &u)
		{m_n = n; m_e = e; m_d = d; m_p = p; m_q = q; m_dp = dp; m_dq = dq; m_u = u;}
	//! factor n given private exponent
	void Initialize(const Integer &n, const Integer &e, const Integer &d);

	// PKCS8PrivateKey
	void BERDecode(BufferedTransformation &bt)
		{PKCS8PrivateKey::BERDecode(bt);}
	void DEREncode(BufferedTransformation &bt) const
		{PKCS8PrivateKey::DEREncode(bt);}
	void Load(BufferedTransformation &bt)
		{PKCS8PrivateKey::BERDecode(bt);}
	void Save(BufferedTransformation &bt) const
		{PKCS8PrivateKey::DEREncode(bt);}
	OID GetAlgorithmID() const {return RSAFunction::GetAlgorithmID();}
	void BERDecodePrivateKey(BufferedTransformation &bt, bool parametersPresent, size_t size);
	void DEREncodePrivateKey(BufferedTransformation &bt) const;

	// TrapdoorFunctionInverse
	Integer CalculateInverse(RandomNumberGenerator &rng, const Integer &x) const;

	// GeneratableCryptoMaterial
	bool Validate(RandomNumberGenerator &rng, unsigned int level) const;
	/*! parameters: (ModulusSize, PublicExponent (default 17)) */
	void GenerateRandom(RandomNumberGenerator &rng, const NameValuePairs &alg);
	bool GetVoidValue(const char *name, const std::type_info &valueType, void *pValue) const;
	void AssignFrom(const NameValuePairs &source);

	// non-derived interface
	const Integer& GetPrime1() const {return m_p;}
	const Integer& GetPrime2() const {return m_q;}
	const Integer& GetPrivateExponent() const {return m_d;}
	const Integer& GetModPrime1PrivateExponent() const {return m_dp;}
	const Integer& GetModPrime2PrivateExponent() const {return m_dq;}
	const Integer& GetMultiplicativeInverseOfPrime2ModPrime1() const {return m_u;}

	void SetPrime1(const Integer &p) {m_p = p;}
	void SetPrime2(const Integer &q) {m_q = q;}
	void SetPrivateExponent(const Integer &d) {m_d = d;}
	void SetModPrime1PrivateExponent(const Integer &dp) {m_dp = dp;}
	void SetModPrime2PrivateExponent(const Integer &dq) {m_dq = dq;}
	void SetMultiplicativeInverseOfPrime2ModPrime1(const Integer &u) {m_u = u;}

protected:
	Integer m_d, m_p, m_q, m_dp, m_dq, m_u;
};

class CRYPTOPP_DLL RSAFunction_ISO : public RSAFunction
{
public:
	Integer ApplyFunction(const Integer &x) const;
	Integer PreimageBound() const {return ++(m_n>>1);}
};

class CRYPTOPP_DLL InvertibleRSAFunction_ISO : public InvertibleRSAFunction
{
public:
	Integer CalculateInverse(RandomNumberGenerator &rng, const Integer &x) const;
	Integer PreimageBound() const {return ++(m_n>>1);}
};

//! RSA
struct CRYPTOPP_DLL RSA
{
	static const char * CRYPTOPP_API StaticAlgorithmName() {return "RSA";}
	typedef RSAFunction PublicKey;
	typedef InvertibleRSAFunction PrivateKey;
};

//! <a href="http://www.weidai.com/scan-mirror/ca.html#RSA">RSA cryptosystem</a>
template <class STANDARD>
struct RSAES : public TF_ES<STANDARD, RSA>
{
};

//! <a href="http://www.weidai.com/scan-mirror/sig.html#RSA">RSA signature scheme with appendix</a>
/*! See documentation of PKCS1v15 for a list of hash functions that can be used with it. */
template <class STANDARD, class H>
struct RSASS : public TF_SS<STANDARD, H, RSA>
{
};

struct CRYPTOPP_DLL RSA_ISO
{
	static const char * CRYPTOPP_API StaticAlgorithmName() {return "RSA-ISO";}
	typedef RSAFunction_ISO PublicKey;
	typedef InvertibleRSAFunction_ISO PrivateKey;
};

template <class H>
struct RSASS_ISO : public TF_SS<P1363_EMSA2, H, RSA_ISO>
{
};

// The two RSA encryption schemes defined in PKCS #1 v2.0
typedef RSAES<PKCS1v15>::Decryptor RSAES_PKCS1v15_Decryptor;
typedef RSAES<PKCS1v15>::Encryptor RSAES_PKCS1v15_Encryptor;

typedef RSAES<OAEP<SHA> >::Decryptor RSAES_OAEP_SHA_Decryptor;
typedef RSAES<OAEP<SHA> >::Encryptor RSAES_OAEP_SHA_Encryptor;

// The three RSA signature schemes defined in PKCS #1 v2.0
typedef RSASS<PKCS1v15, SHA>::Signer RSASSA_PKCS1v15_SHA_Signer;
typedef RSASS<PKCS1v15, SHA>::Verifier RSASSA_PKCS1v15_SHA_Verifier;

namespace Weak {
typedef RSASS<PKCS1v15, Weak1::MD2>::Signer RSASSA_PKCS1v15_MD2_Signer;
typedef RSASS<PKCS1v15, Weak1::MD2>::Verifier RSASSA_PKCS1v15_MD2_Verifier;

typedef RSASS<PKCS1v15, Weak1::MD5>::Signer RSASSA_PKCS1v15_MD5_Signer;
typedef RSASS<PKCS1v15, Weak1::MD5>::Verifier RSASSA_PKCS1v15_MD5_Verifier;
}

NAMESPACE_END

#endif

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About the Authors

Apriorit Inc
Apriorit Inc.
Hungary Hungary
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

32 members


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

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