/*

* Copyright (c) 2006-2009 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of the License "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description: 

*

*/

#include "rsashim.h"

#include "cryptoasymmetriccipherapi.h"

#include "cryptosignatureapi.h"

#include <cryptospi/cryptospidef.h>

#include "keyconverter.h"

#include "keys.h"

#include "../common/inlines.h"

using namespace CryptoSpi;

// CRSAPKCS1v15EncryptorShim ////////////////////////////////////////////////////////

CRSAPKCS1v15EncryptorShim* CRSAPKCS1v15EncryptorShim::NewL(const CRSAPublicKey& aKey)

	{

	CRSAPKCS1v15EncryptorShim* self = CRSAPKCS1v15EncryptorShim::NewLC(aKey);

	CleanupStack::Pop(self);

	return self;

	}

CRSAPKCS1v15EncryptorShim* CRSAPKCS1v15EncryptorShim::NewLC(const CRSAPublicKey& aKey)

	{

	CRSAPKCS1v15EncryptorShim* self = new (ELeave) CRSAPKCS1v15EncryptorShim(aKey);

	CleanupStack::PushL(self);

	self->ConstructL(aKey);

	return self;

	}

CRSAPKCS1v15EncryptorShim::CRSAPKCS1v15EncryptorShim(const CRSAPublicKey& aKey)

	: CRSAPKCS1v15Encryptor(aKey)

	{

	}

CRSAPKCS1v15EncryptorShim::~CRSAPKCS1v15EncryptorShim()

	{

	delete iAsymmetricCipherImpl;

	delete iKey;

	}

void CRSAPKCS1v15EncryptorShim::ConstructL(const CRSAPublicKey& aKey)

	{

	iKey = KeyConverter::CreateKeyL(aKey);

	CAsymmetricCipherFactory::CreateAsymmetricCipherL(

												iAsymmetricCipherImpl,

												KRsaCipherUid,

												*iKey,

												KCryptoModeEncryptUid,

												KPaddingModePkcs1_v1_5_EncryptionUid,

												NULL);

	}

void CRSAPKCS1v15EncryptorShim::EncryptL(const TDesC8& aInput, TDes8& aOutput) const

	{

	iAsymmetricCipherImpl->ProcessL(aInput, aOutput);

	}

TInt CRSAPKCS1v15EncryptorShim::MaxInputLength(void) const

	{

	TInt maxInputLength=0; 

	TRAPD(err, maxInputLength=iAsymmetricCipherImpl->GetMaximumInputLengthL())

	if (err==KErrNone)

		{

		return maxInputLength;

		}

	else

		{

		return err;

		}

	}

TInt CRSAPKCS1v15EncryptorShim::MaxOutputLength(void) const

	{

	TInt maxOutputLength=0; 

	TRAPD(err, maxOutputLength=iAsymmetricCipherImpl->GetMaximumOutputLengthL())

	if (err==KErrNone)

		{

		return maxOutputLength;

		}

	else

		{

		return err;

		}

	}

// CRSAPKCS1v15DecryptorShim ////////////////////////////////////////////////////////

CRSAPKCS1v15DecryptorShim* CRSAPKCS1v15DecryptorShim::NewL(const CRSAPrivateKey& aKey)

	{

	CRSAPKCS1v15DecryptorShim* self = CRSAPKCS1v15DecryptorShim::NewLC(aKey);

	CleanupStack::Pop(self);

	return self;

	}

CRSAPKCS1v15DecryptorShim* CRSAPKCS1v15DecryptorShim::NewLC(const CRSAPrivateKey& aKey)

	{

	CRSAPKCS1v15DecryptorShim* self = new (ELeave) CRSAPKCS1v15DecryptorShim(aKey);

	CleanupStack::PushL(self);

	self->ConstructL(aKey);

	return self;

	}

CRSAPKCS1v15DecryptorShim::CRSAPKCS1v15DecryptorShim(const CRSAPrivateKey& aKey)

	: CRSAPKCS1v15Decryptor(aKey)

	{

	}

CRSAPKCS1v15DecryptorShim::~CRSAPKCS1v15DecryptorShim()

	{

	delete iAsymmetricCipherImpl;

	delete iKey;

	}

void CRSAPKCS1v15DecryptorShim::ConstructL(const CRSAPrivateKey& aKey)

	{

	iKey = KeyConverter::CreateKeyL(aKey);

	CAsymmetricCipherFactory::CreateAsymmetricCipherL(

												iAsymmetricCipherImpl,

												KRsaCipherUid,

												*iKey,

												KCryptoModeDecryptUid,

												KPaddingModePkcs1_v1_5_EncryptionUid,

												NULL);

	}

void CRSAPKCS1v15DecryptorShim::DecryptL(const TDesC8& aInput, TDes8& aOutput) const

	{

	iAsymmetricCipherImpl->ProcessL(aInput, aOutput);

	}

TInt CRSAPKCS1v15DecryptorShim::MaxInputLength(void) const

	{

	TInt maxInputLength=0; 

	TRAPD(err, maxInputLength=iAsymmetricCipherImpl->GetMaximumInputLengthL())

	if (err==KErrNone)

		{

		return maxInputLength;

		}

	else

		{

		return err;

		}

	}

TInt CRSAPKCS1v15DecryptorShim::MaxOutputLength(void) const

	{

	TInt maxOutputLength=0; 

	TRAPD(err, maxOutputLength=iAsymmetricCipherImpl->GetMaximumOutputLengthL())

	if (err==KErrNone)

		{

		return maxOutputLength;

		}

	else

		{

		return err;

		}

	}

// CRSAPKCS1v15SignerShim ////////////////////////////////////////////////////////

CRSAPKCS1v15SignerShim* CRSAPKCS1v15SignerShim::NewL(const CRSAPrivateKey& aKey)

	{

	CRSAPKCS1v15SignerShim* self = CRSAPKCS1v15SignerShim::NewLC(aKey);

	CleanupStack::Pop(self);

	return self;

	}

CRSAPKCS1v15SignerShim* CRSAPKCS1v15SignerShim::NewLC(const CRSAPrivateKey& aKey)

	{

	CRSAPKCS1v15SignerShim* self = new (ELeave) CRSAPKCS1v15SignerShim(aKey);

	CleanupStack::PushL(self);

	self->ConstructL(aKey);

	return self;

	}

CRSASignature* CRSAPKCS1v15SignerShim::SignL(const TDesC8& aInput) const

	{

	//Sign the input data

	CCryptoParams* signature = CCryptoParams::NewLC();

	iSignerImpl->SignL(aInput, *signature);

	//Retrieve the S in RSA signature from the array

	const TInteger& cS=signature->GetBigIntL(KRsaSignatureParameterSUid);

	//Make copies of the RSA signature

	RInteger s=RInteger::NewL(cS);

	CleanupClosePushL(s);	

	//Create the RSA signature object, the ownership of s is transfered to rsaSig

	CRSASignature* rsaSig=CRSASignature::NewL(s);

	//Cleanup

	CleanupStack::Pop(&s);

	CleanupStack::PopAndDestroy(signature);

	return rsaSig;

	}

TInt CRSAPKCS1v15SignerShim::MaxInputLength(void) const

	{

	TInt maxInputLength=0; 

	TRAPD(err, maxInputLength=iSignerImpl->GetMaximumInputLengthL())

	if (err==KErrNone)

		{

		return maxInputLength;

		}

	else

		{

		return err;

		}

	}

TInt CRSAPKCS1v15SignerShim::MaxOutputLength(void) const

	{

	TInt maxOutputLength=0; 

	TRAPD(err, maxOutputLength=iSignerImpl->GetMaximumOutputLengthL())

	if (err==KErrNone)

		{

		return maxOutputLength;

		}

	else

		{

		return err;

		}

	}

CRSAPKCS1v15SignerShim::~CRSAPKCS1v15SignerShim(void)

	{

	delete iSignerImpl;

	delete iKey;

	}

CRSAPKCS1v15SignerShim::CRSAPKCS1v15SignerShim(const CRSAPrivateKey& aKey)

	: CRSAPKCS1v15Signer(aKey)

	{

	}

void CRSAPKCS1v15SignerShim::ConstructL(const CRSAPrivateKey& aKey)

	{

	iKey = KeyConverter::CreateKeyL(aKey);

	CSignatureFactory::CreateSignerL(

									iSignerImpl,

									KRsaSignerUid,

									*iKey,

									KPaddingModePkcs1_v1_5_SignatureUid,

									NULL);

	}

// CRSAPKCS1v15VerifierShim ////////////////////////////////////////////////////////

CRSAPKCS1v15VerifierShim* CRSAPKCS1v15VerifierShim::NewL(const CRSAPublicKey& aKey)

	{

	CRSAPKCS1v15VerifierShim* self = CRSAPKCS1v15VerifierShim::NewLC(aKey);

	CleanupStack::Pop(self);

	return self;

	}

CRSAPKCS1v15VerifierShim* CRSAPKCS1v15VerifierShim::NewLC(const CRSAPublicKey& aKey)

	{

	CRSAPKCS1v15VerifierShim* self = new (ELeave) CRSAPKCS1v15VerifierShim(aKey);

	CleanupStack::PushL(self);

	self->ConstructL(aKey);

	return self;

	}

TBool CRSAPKCS1v15VerifierShim::VerifyL(const TDesC8& aInput, const CRSASignature& aSignature) const

	{

	//create the array format rsa signature for the new crypto spi

	CCryptoParams* rsaSig = CCryptoParams::NewLC();

	rsaSig->AddL(aSignature.S(), KRsaSignatureParameterSUid);

	//pass the signature and input to crypto spi to be verified

	TBool verificationResult = EFalse;	

	iVerifierImpl->VerifyL(aInput, *rsaSig, verificationResult);

	//Cleanup the array

	CleanupStack::PopAndDestroy(rsaSig);

	return verificationResult;

	}

HBufC8* CRSAPKCS1v15VerifierShim::InverseSignLC(const CRSASignature& aSignature) const

	{

	//create the array format rsa signature for the new crypto spi

	CCryptoParams* rsaSig = CCryptoParams::NewLC();

	rsaSig->AddL(aSignature.S(), KRsaSignatureParameterSUid);

	//pass the signature and input to crypto spi to be verified

	HBufC8* output = NULL;

	iVerifierImpl->InverseSignL(output, *rsaSig);

	//Cleanup the array

	CleanupStack::PopAndDestroy(rsaSig);

	// leave output on the cleanup stack

	CleanupStack::PushL(output);

	return output;

	}

TInt CRSAPKCS1v15VerifierShim::MaxInputLength(void) const

	{

	TInt maxInputLength=0; 

	TRAPD(err, maxInputLength=iVerifierImpl->GetMaximumInputLengthL())

	if (err==KErrNone)

		{

		return maxInputLength;

		}

	else

		{

		return err;

		}

	}

TInt CRSAPKCS1v15VerifierShim::MaxOutputLength(void) const

	{

	TInt maxOutputLength=0; 

	TRAPD(err, maxOutputLength=iVerifierImpl->GetMaximumOutputLengthL())

	if (err==KErrNone)

		{

		return maxOutputLength;

		}

	else

		{

		return err;

		}

	}

CRSAPKCS1v15VerifierShim::~CRSAPKCS1v15VerifierShim(void)

	{

	delete iVerifierImpl;

	delete iKey;

	}

CRSAPKCS1v15VerifierShim::CRSAPKCS1v15VerifierShim(const CRSAPublicKey& aKey)

	: CRSAPKCS1v15Verifier(aKey)

	{

	}

void CRSAPKCS1v15VerifierShim::ConstructL(const CRSAPublicKey& aKey)

	{

	iKey = KeyConverter::CreateKeyL(aKey);

	CSignatureFactory::CreateVerifierL(

									iVerifierImpl,

									KRsaVerifierUid,

									*iKey,

									KPaddingModePkcs1_v1_5_SignatureUid,

									NULL);

	}