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/*
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* Copyright (c) 2006-2010 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 "rijndaelshim.h"
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#include <cryptospi/cryptosymmetriccipherapi.h>
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#include <cryptospi/cryptospidef.h>
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#include <cryptospi/plugincharacteristics.h>
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#include <cryptospi/keys.h>
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#include <cryptostrength.h>
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#include "../common/inlines.h"
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using namespace CryptoSpi;
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// CAESEncryptorShim ////////////////////////////////////////////////////////
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CAESEncryptorShim* CAESEncryptorShim::NewL(const TDesC8& aKey)
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{
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CAESEncryptorShim* self = CAESEncryptorShim::NewLC(aKey);
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CleanupStack::Pop(self);
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return self;
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}
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CAESEncryptorShim* CAESEncryptorShim::NewLC(const TDesC8& aKey)
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{
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CAESEncryptorShim* self = new (ELeave) CAESEncryptorShim();
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CleanupStack::PushL(self);
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self->ConstructL(aKey);
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TCrypto::IsSymmetricWeakEnoughL(BytesToBits(aKey.Size()));
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return self;
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}
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CAESEncryptorShim::CAESEncryptorShim()
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{
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}
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CAESEncryptorShim::~CAESEncryptorShim()
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{
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delete iSymmetricCipherImpl;
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delete iKey;
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}
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void CAESEncryptorShim::ConstructL(const TDesC8& aKey)
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{
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TKeyProperty keyProperty = {KAesUid, KNullUid, KSymmetricKeyUid, KNonEmbeddedKeyUid};
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CCryptoParams* keyParam =CCryptoParams::NewLC();
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keyParam->AddL(aKey, KSymmetricKeyParameterUid);
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iKey=CKey::NewL(keyProperty, *keyParam);
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CleanupStack::PopAndDestroy(keyParam);
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CSymmetricCipherFactory::CreateSymmetricCipherL(
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iSymmetricCipherImpl,
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KAesUid,
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*iKey,
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KCryptoModeEncryptUid,
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KOperationModeECBUid,
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KPaddingModeNoneUid,
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NULL);
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}
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TInt CAESEncryptorShim::BlockSize() const
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{
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return BitsToBytes(iSymmetricCipherImpl->BlockSize());
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}
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TInt CAESEncryptorShim::KeySize() const
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{
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return iSymmetricCipherImpl->KeySize();
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}
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void CAESEncryptorShim::Transform(TDes8& aBlock)
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{
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iOutputBlock.Zero();
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TRAP_IGNORE(iSymmetricCipherImpl->ProcessL(aBlock, iOutputBlock);)
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aBlock = iOutputBlock;
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}
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void CAESEncryptorShim::Reset()
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{
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iSymmetricCipherImpl->Reset();
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}
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TInt CAESEncryptorShim::Extension_(TUint aExtensionId, TAny*& a0, TAny* /*a1*/)
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{
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TInt ret(KErrExtensionNotSupported);
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if (CryptoSpi::KSymmetricCipherInterface == aExtensionId && iSymmetricCipherImpl)
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{
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a0=iSymmetricCipherImpl;
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ret=KErrNone;
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}
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return ret;
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}
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// CAESDecryptorShim ////////////////////////////////////////////////////////
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CAESDecryptorShim* CAESDecryptorShim::NewL(const TDesC8& aKey)
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{
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CAESDecryptorShim* self = CAESDecryptorShim::NewLC(aKey);
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CleanupStack::Pop(self);
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return self;
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}
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CAESDecryptorShim* CAESDecryptorShim::NewLC(const TDesC8& aKey)
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{
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CAESDecryptorShim* self = new (ELeave) CAESDecryptorShim();
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CleanupStack::PushL(self);
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self->ConstructL(aKey);
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TCrypto::IsSymmetricWeakEnoughL(BytesToBits(aKey.Size()));
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return self;
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}
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CAESDecryptorShim::CAESDecryptorShim()
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{
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}
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CAESDecryptorShim::~CAESDecryptorShim()
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{
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delete iSymmetricCipherImpl;
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delete iKey;
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}
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void CAESDecryptorShim::ConstructL(const TDesC8& aKey)
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{
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TKeyProperty keyProperty = {KAesUid, KNullUid, KSymmetricKeyUid, KNonEmbeddedKeyUid};
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CCryptoParams* keyParam =CCryptoParams::NewLC();
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keyParam->AddL(aKey, KSymmetricKeyParameterUid);
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iKey=CKey::NewL(keyProperty, *keyParam);
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CleanupStack::PopAndDestroy(keyParam);
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CSymmetricCipherFactory::CreateSymmetricCipherL(
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iSymmetricCipherImpl,
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KAesUid,
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*iKey,
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KCryptoModeDecryptUid,
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KOperationModeECBUid,
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KPaddingModeNoneUid,
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NULL);
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}
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TInt CAESDecryptorShim::BlockSize() const
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{
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return BitsToBytes(iSymmetricCipherImpl->BlockSize());
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}
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TInt CAESDecryptorShim::KeySize() const
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{
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return iSymmetricCipherImpl->KeySize();
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}
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void CAESDecryptorShim::Transform(TDes8& aBlock)
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{
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iOutputBlock.Zero();
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TRAP_IGNORE(iSymmetricCipherImpl->ProcessL(aBlock, iOutputBlock);)
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aBlock = iOutputBlock;
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}
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void CAESDecryptorShim::Reset()
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{
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iSymmetricCipherImpl->Reset();
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}
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TInt CAESDecryptorShim::Extension_(TUint aExtensionId, TAny*& a0, TAny* /*a1*/)
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{
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TInt ret(KErrExtensionNotSupported);
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if (CryptoSpi::KSymmetricCipherInterface == aExtensionId && iSymmetricCipherImpl)
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{
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a0=iSymmetricCipherImpl;
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ret=KErrNone;
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}
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return ret;
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}
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