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/*
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* Copyright (c) 2007-2010 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of the License "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description:
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*
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*/
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#include "rsakeypairshim.h"
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#include <cryptospi/cryptokeypairgeneratorapi.h>
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#include <cryptospi/keypair.h>
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#include <cryptospi/cryptoparams.h>
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#include <cryptospi/cryptospidef.h>
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using namespace CryptoSpi;
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/* CRSAKeyPair */
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const TUint KFermat4 = 65537;
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CRSAKeyPairShim* CRSAKeyPairShim::NewLC(TUint aModulusBits, TRSAPrivateKeyType aKeyType)
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{
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CRSAKeyPairShim* self = new(ELeave) CRSAKeyPairShim();
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CleanupStack::PushL(self);
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self->ConstructL(aModulusBits, aKeyType, KFermat4);
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return self;
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}
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CRSAKeyPairShim::~CRSAKeyPairShim(void)
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{
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}
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CRSAKeyPairShim::CRSAKeyPairShim(void)
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{
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}
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void CRSAKeyPairShim::ConstructL(TUint aModulusBits, TRSAPrivateKeyType aKeyType, TInt aPublicExponent)
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{
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CKeyPairGenerator* keyPairGeneratorImpl=NULL;
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CKeyPairGeneratorFactory::CreateKeyPairGeneratorL(
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keyPairGeneratorImpl,
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KRSAKeyPairGeneratorUid,
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NULL);
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CleanupStack::PushL(keyPairGeneratorImpl);
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// put the RSA parameters into an array
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CCryptoParams* keyParameters = CCryptoParams::NewLC();
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keyParameters->AddL(aPublicExponent, KRsaKeyParameterEUid);
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if (aKeyType == EStandard)
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{
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keyParameters->AddL(KRsaPrivateKeyStandard, KRsaKeyTypeUid);
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}
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else if (aKeyType == EStandardCRT)
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{
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keyParameters->AddL(KRsaPrivateKeyCRT, KRsaKeyTypeUid);
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}
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// call the api to create an RSA key pair
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CKeyPair* keyPair = 0;
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keyPairGeneratorImpl->GenerateKeyPairL(aModulusBits, *keyParameters, keyPair);
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CleanupStack::PushL(keyPair);
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/*
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* Convert the CKeyPair to CRSAPrivateKey{CRT/Standard} and CRSAPublicKey
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* The public key becomes the owner of n and e RIntegers
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*/
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RInteger n = RInteger::NewL(keyPair->PublicKey().GetBigIntL(KRsaKeyParameterNUid));
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CleanupClosePushL(n);
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RInteger e = RInteger::NewL(keyPair->PublicKey().GetBigIntL(KRsaKeyParameterEUid));
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CleanupClosePushL(e);
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iPublic = CRSAPublicKey::NewL(n, e);
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if (aKeyType == EStandard)
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{
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RInteger n = RInteger::NewL(keyPair->PrivateKey().GetBigIntL(KRsaKeyParameterNUid));
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CleanupClosePushL(n);
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RInteger d = RInteger::NewL(keyPair->PrivateKey().GetBigIntL(KRsaKeyParameterDUid));
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CleanupClosePushL(d);
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iPrivate = CRSAPrivateKeyStandard::NewL(n, d);
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CleanupStack::Pop(2, &n);
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}
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else if (aKeyType == EStandardCRT)
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{
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RInteger n = RInteger::NewL(keyPair->PrivateKey().GetBigIntL(KRsaKeyParameterNUid));
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CleanupClosePushL(n);
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RInteger p = RInteger::NewL(keyPair->PrivateKey().GetBigIntL(KRsaKeyParameterPUid));
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CleanupClosePushL(p);
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RInteger q = RInteger::NewL(keyPair->PrivateKey().GetBigIntL(KRsaKeyParameterQUid));
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CleanupClosePushL(q);
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RInteger dp = RInteger::NewL(keyPair->PrivateKey().GetBigIntL(KRsaKeyParameterDPUid));
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CleanupClosePushL(p);
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RInteger dq = RInteger::NewL(keyPair->PrivateKey().GetBigIntL(KRsaKeyParameterDQUid));
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CleanupClosePushL(q);
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RInteger qinv = RInteger::NewL(keyPair->PrivateKey().GetBigIntL(KRsaKeyParameterQInvUid));
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CleanupClosePushL(qinv);
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iPrivate = CRSAPrivateKeyCRT::NewL(n, p, q, dp, dq, qinv);
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CleanupStack::Pop(6, &n);
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}
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/*
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* cleanup stack - it should contain keyPairGeneratorImpl, keyParameters, keyPair, n, e
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*/
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CleanupStack::Pop(2, &n);
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CleanupStack::PopAndDestroy(3, keyPairGeneratorImpl);
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}
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