sl@0: /*
sl@0: * Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
sl@0: * All rights reserved.
sl@0: * This component and the accompanying materials are made available
sl@0: * under the terms of the License "Eclipse Public License v1.0"
sl@0: * which accompanies this distribution, and is available
sl@0: * at the URL "http://www.eclipse.org/legal/epl-v10.html".
sl@0: *
sl@0: * Initial Contributors:
sl@0: * Nokia Corporation - initial contribution.
sl@0: *
sl@0: * Contributors:
sl@0: *
sl@0: * Description: 
sl@0: *
sl@0: */
sl@0: 
sl@0: 
sl@0: #include "dummyeccimpl.h"
sl@0: 
sl@0: #include <e32def.h>
sl@0: #include <cryptospi/cryptospidef.h>
sl@0: #include "keys.h"
sl@0: #include <cryptospi/plugincharacteristics.h>
sl@0: #include "pluginconfig.h"
sl@0: #include "cryptospihai.h"
sl@0: 
sl@0: using namespace DummyEccHwCrypto;
sl@0: using namespace CryptoSpiHai;
sl@0: 
sl@0: /**
sl@0:  * These are just randomly selected numbers. There is no logic behind 
sl@0:  * their values.
sl@0:  */ 
sl@0: const TInt KMaxOutputLength = 50;
sl@0: const TInt KMaxInputLength = 50;
sl@0: 
sl@0: CDummyECCCipherImpl* CDummyECCCipherImpl::NewL(const CKey& aKey,
sl@0:         TUid aCryptoMode, TUid aPaddingMode)
sl@0:     {
sl@0:     CDummyECCCipherImpl* self = CDummyECCCipherImpl::NewLC(aKey, aCryptoMode,
sl@0:             aPaddingMode);
sl@0:     CleanupStack::Pop(self);
sl@0:     return self;
sl@0:     }
sl@0: 
sl@0: CDummyECCCipherImpl* CDummyECCCipherImpl::NewLC(const CKey& aKey,
sl@0:         TUid aCryptoMode, TUid aPaddingMode)
sl@0:     {
sl@0:     CDummyECCCipherImpl* self = new (ELeave) CDummyECCCipherImpl(aCryptoMode,
sl@0:             aPaddingMode);
sl@0:     CleanupStack::PushL(self);
sl@0:     self->ConstructL(aKey);
sl@0:     return self;
sl@0:     }
sl@0: 
sl@0: CDummyECCCipherImpl::CDummyECCCipherImpl(TUid aCryptoMode, TUid aPaddingMode) :
sl@0:     iCryptoMode(aCryptoMode), iPaddingMode(aPaddingMode)
sl@0:     {
sl@0:     }
sl@0: 
sl@0: void CDummyECCCipherImpl::ConstructL(const CKey& aKey)
sl@0:     {
sl@0:     SetKeyL(aKey);
sl@0:     }
sl@0: 
sl@0: // MPlugin Interface Start
sl@0: void CDummyECCCipherImpl::Close()
sl@0:     {
sl@0:     delete this;
sl@0:     }
sl@0: 
sl@0: void CDummyECCCipherImpl::Reset()
sl@0:     {
sl@0:     }
sl@0: 
sl@0: void CDummyECCCipherImpl::GetCharacteristicsL(
sl@0:         const TCharacteristics*& aPluginCharacteristics)
sl@0:     {
sl@0:     TInt numCiphers = sizeof(KAsymmetricCipherCharacteristics)
sl@0:             / sizeof(TAsymmetricCipherCharacteristics*);
sl@0:     TInt32 implUid = ImplementationUid().iUid;
sl@0:     for (TInt i = 0; i < numCiphers; ++i)
sl@0:         {
sl@0:         if (KAsymmetricCipherCharacteristics[i]->cmn.iImplementationUID
sl@0:                 == implUid)
sl@0:             {
sl@0:             aPluginCharacteristics = KAsymmetricCipherCharacteristics[i];
sl@0:             break;
sl@0:             }
sl@0:         }
sl@0:     }
sl@0: 
sl@0: const CExtendedCharacteristics* CDummyECCCipherImpl::GetExtendedCharacteristicsL()
sl@0:     {
sl@0:     // All Symbian software plug-ins have unlimited concurrency, cannot be reserved
sl@0:     // for exclusive use and are not CERTIFIED to be standards compliant.
sl@0:     return CExtendedCharacteristics::NewL(KMaxTInt, EFalse);
sl@0:     }
sl@0: 
sl@0: TAny* CDummyECCCipherImpl::GetExtension(TUid /* aExtensionId */)
sl@0:     {
sl@0:     return 0;
sl@0:     }
sl@0: // End of MPlugin Interface
sl@0: 
sl@0: // MAsymmetricCipherBase Interface
sl@0: void CDummyECCCipherImpl::SetKeyL(const CKey& aKey)
sl@0:     {
sl@0:     // delete any previous key and recreate the key
sl@0:     delete iKey;
sl@0:     iKey = NULL;
sl@0:     iKey = CKey::NewL(aKey);
sl@0:     }
sl@0: 
sl@0: void CDummyECCCipherImpl::SetCryptoModeL(TUid aCryptoMode)
sl@0:     {
sl@0:     switch (aCryptoMode.iUid)
sl@0:         {
sl@0:         case KCryptoModeEncrypt:
sl@0:         case KCryptoModeDecrypt:
sl@0:             break;
sl@0:         default:
sl@0:             User::Leave(KErrNotSupported);
sl@0:         }
sl@0:     iCryptoMode = aCryptoMode;
sl@0:     }
sl@0: 
sl@0: void CDummyECCCipherImpl::SetPaddingModeL(TUid /* aPaddingMode */)
sl@0:     {
sl@0:     User::Leave(KErrNotSupported);
sl@0:     }
sl@0: 
sl@0: TInt CDummyECCCipherImpl::GetMaximumInputLengthL() const
sl@0:     {
sl@0:     return KMaxInputLength;
sl@0:     }
sl@0: 
sl@0: TInt CDummyECCCipherImpl::GetMaximumOutputLengthL() const
sl@0:     {
sl@0:     return KMaxOutputLength;
sl@0:     }
sl@0: // End of MAsymmetricCipherBase Interface
sl@0: 
sl@0: // MAsymmetricCipher Interface
sl@0: void CDummyECCCipherImpl::ProcessL(const TDesC8& aInput, TDes8& aOutput)
sl@0:     {
sl@0:     if (iCryptoMode.iUid == KCryptoModeEncrypt)
sl@0:         {
sl@0:         EncryptL(aInput, aOutput);
sl@0:         }
sl@0:     else
sl@0:         {
sl@0:         DecryptL(aInput, aOutput);
sl@0:         }
sl@0:     }
sl@0: 
sl@0: TUid CDummyECCCipherImpl::ImplementationUid() const
sl@0:     {
sl@0:     return KCryptoPluginEccCipherUid;
sl@0:     }
sl@0: 
sl@0: CDummyECCCipherImpl::~CDummyECCCipherImpl()
sl@0:     {
sl@0:     delete iKey;
sl@0:     }
sl@0: 
sl@0: void CDummyECCCipherImpl::EncryptL(const TDesC8& /* aInput */, TDes8& /* aOuput */)
sl@0:     {
sl@0:     User::Leave(KErrNotSupported);
sl@0:     }
sl@0: 
sl@0: void CDummyECCCipherImpl::DecryptL(const TDesC8& aInput, TDes8& aOutput)
sl@0:     {
sl@0:     if (iKey->IsPresent(KPassedHandleToKeyUid))
sl@0:         {
sl@0:         const TInt& keyHandle = iKey->GetTIntL(KPassedHandleToKeyUid);
sl@0: 
sl@0:         // Invoke the Spi HAI to perform the operation
sl@0:         CCryptoSpiHai::DecryptL(keyHandle, aInput, aOutput);
sl@0:         }
sl@0:     else
sl@0:         {
sl@0:         User::Leave(KErrNotSupported);
sl@0:         }
sl@0:     }
sl@0: // End of file
sl@0: 
sl@0: