Symaptic: os/security/crypto/weakcryptospi/source/asymmetric/dsakeypairshim.cpp@bde4ae8d615e

     1 /*

     2 * Copyright (c) 2007-2010 Nokia Corporation and/or its subsidiary(-ies).

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

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

     6 * which accompanies this distribution, and is available

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

8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description:

    15 *

    16 */

    19 #include "dsakeypairshim.h"

    20 #include <cryptospi/cryptokeypairgeneratorapi.h>

    21 #include <cryptospi/keypair.h>

    22 #include <cryptospi/cryptoparams.h>

    23 #include <cryptospi/cryptospidef.h>

    26 using namespace CryptoSpi;

    29 /* CDSAKeyPair */

    30 CDSAKeyPairShim* CDSAKeyPairShim::NewLC(TUint aKeyBits)

    31 	{

    32 	CDSAKeyPairShim* self = new(ELeave) CDSAKeyPairShim();

    33 	CleanupStack::PushL(self);

    34 	self->ConstructL(aKeyBits);

    35 	return self;

    36 	}

    38 CDSAKeyPairShim::~CDSAKeyPairShim()

    39 	{

    40 	}

    42 CDSAKeyPairShim::CDSAKeyPairShim()

    43 	{

    44 	}

    46 void CDSAKeyPairShim::ConstructL(TUint aKeyBits)

    47 	{

    48 	CKeyPairGenerator* keyPairGeneratorImpl=NULL;

    49 	CKeyPairGeneratorFactory::CreateKeyPairGeneratorL(

    50 											keyPairGeneratorImpl,

    51 											KDSAKeyPairGeneratorUid,

    52 											NULL);

    53 	CleanupStack::PushL(keyPairGeneratorImpl);

    58 	// put the DSA parameters into an array

    59 	CCryptoParams* keyParameters = CCryptoParams::NewLC();

    61 	// call the api to create an DSA key pair

    62 	CKeyPair* keyPair = 0;

    63 	keyPairGeneratorImpl->GenerateKeyPairL(aKeyBits, *keyParameters, keyPair);

    64 	CleanupStack::PushL(keyPair);

    66 	//Just to keep BC

    67 	if (keyParameters->IsPresent(KDsaKeyGenerationSeedUid))

    68 		{

    69 		const TDesC8& seed = keyParameters->GetTDesC8L(KDsaKeyGenerationSeedUid);

    70 		TInt counter=keyParameters->GetTIntL(KDsaKeyGenerationCounterUid);

    71 		iPrimeCertificate=CDSAPrimeCertificate::NewL(seed, counter);

    72 		}

    74 	//

    75 	//for compatibility convert the CKeyPair to CDSAPrivateKey and CDSAPublicKey

    76 	//

    77 	// the public key becomes the owner of P,Q,G,Y

    78 	const CKey& publicKey = keyPair->PublicKey();

    79 	RInteger P = RInteger::NewL(publicKey.GetBigIntL(KDsaKeyParameterPUid));

    80 	CleanupClosePushL(P);

    82 	RInteger Q = RInteger::NewL(publicKey.GetBigIntL(KDsaKeyParameterQUid));

    83 	CleanupClosePushL(Q);

    85 	RInteger G = RInteger::NewL(publicKey.GetBigIntL(KDsaKeyParameterGUid));

    86 	CleanupClosePushL(G);

    88 	RInteger Y = RInteger::NewL(publicKey.GetBigIntL(KDsaKeyParameterYUid));

    89 	CleanupClosePushL(Y);

    91 	iPublic = CDSAPublicKey::NewL(P, Q, G, Y);

    92 	CleanupStack::Pop(4, &P); //Y,G,Q,P

    94 	// the private key becomes the owner of P1,Q1,G1,X

    95 	const CKey& privateKey = keyPair->PrivateKey();

    96 	RInteger P1 = RInteger::NewL(privateKey.GetBigIntL(KDsaKeyParameterPUid));

    97 	CleanupClosePushL(P1);

    99 	RInteger Q1 = RInteger::NewL(privateKey.GetBigIntL(KDsaKeyParameterQUid));

   100 	CleanupClosePushL(Q1);

   102 	RInteger G1 = RInteger::NewL(privateKey.GetBigIntL(KDsaKeyParameterGUid));

   103 	CleanupClosePushL(G1);

   105 	RInteger X = RInteger::NewL(privateKey.GetBigIntL(KDsaKeyParameterXUid));

   106 	CleanupClosePushL(X);

   108 	iPrivate = CDSAPrivateKey::NewL(P1, Q1, G1, X);

   109 	CleanupStack::Pop(4, &P1); //X,G1,Q1,P1

   111 	CleanupStack::PopAndDestroy(3, keyPairGeneratorImpl); // keyPair, keyParameters, keyPairGeneratorImpl

   112 	}

author	sl@SLION-WIN7.fritz.box
	Fri, 15 Jun 2012 03:10:57 +0200
changeset 0	bde4ae8d615e
permissions	-rw-r--r--