| author | sl@SLION-WIN7.fritz.box |
| Fri, 15 Jun 2012 03:10:57 +0200 | |
| changeset 0 | bde4ae8d615e |
| permissions | -rw-r--r-- |
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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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|
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|
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#include <e32def.h> |
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#include <cryptospi/keys.h> |
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#include "asymmetriccipherimpl.h" |
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#include <cryptostrength.h> |
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#include <cryptospi/cryptospidef.h> |
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#include <cryptospi/plugincharacteristics.h> |
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#include "pluginconfig.h" |
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#include "../../../source/common/inlines.h" |
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|
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using namespace SoftwareCrypto; |
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|
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CAsymmetricCipherImpl::CAsymmetricCipherImpl( |
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TUid aCryptoMode, |
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TUid aPaddingMode) : |
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iCryptoMode(aCryptoMode), |
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iPaddingMode(aPaddingMode) |
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{
|
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} |
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|
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void CAsymmetricCipherImpl::ConstructL(const CKey& aKey) |
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{
|
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DoSetCryptoModeL(iCryptoMode); |
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DoSetKeyL(aKey); |
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DoSetPaddingModeL(iPaddingMode); |
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} |
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|
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CAsymmetricCipherImpl::~CAsymmetricCipherImpl() |
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{
|
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delete iKey; |
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delete iPadding; |
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} |
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|
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void CAsymmetricCipherImpl::Close() |
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{
|
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delete this; |
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} |
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|
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void CAsymmetricCipherImpl::Reset() |
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{
|
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} |
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|
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TAny* CAsymmetricCipherImpl::GetExtension(TUid /*aExtensionId*/) |
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{
|
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return 0; |
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} |
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|
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void CAsymmetricCipherImpl::GetCharacteristicsL(const TAny*& aPluginCharacteristics) |
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{
|
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TInt numCiphers = sizeof(KAsymmetricCipherCharacteristics)/sizeof(TAsymmetricCipherCharacteristics*); |
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TInt32 implUid = ImplementationUid().iUid; |
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for (TInt i = 0; i < numCiphers; ++i) |
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{
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if (KAsymmetricCipherCharacteristics[i]->cmn.iImplementationUID == implUid) |
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{
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aPluginCharacteristics = KAsymmetricCipherCharacteristics[i]; |
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break; |
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} |
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} |
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} |
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|
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TInt CAsymmetricCipherImpl::GetMaximumOutputLengthL() const |
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{
|
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// Override in subclass |
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User::Leave(KErrNotSupported); |
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return 0; |
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} |
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|
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TInt CAsymmetricCipherImpl::GetMaximumInputLengthL() const |
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{
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// Override in subclass |
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User::Leave(KErrNotSupported); |
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return 0; |
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} |
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|
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void CAsymmetricCipherImpl::SetKeyL(const CKey& aKey) |
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{
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DoSetKeyL(aKey); |
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} |
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|
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void CAsymmetricCipherImpl::DoSetKeyL(const CKey& aKey) |
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{
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delete iKey; // delete any previous key |
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iKey = CKey::NewL(aKey); |
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} |
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|
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void CAsymmetricCipherImpl::SetCryptoModeL(TUid aCryptoMode) |
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{
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DoSetCryptoModeL(aCryptoMode); |
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Reset(); |
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} |
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|
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void CAsymmetricCipherImpl::DoSetCryptoModeL(TUid aCryptoMode) |
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{
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switch (aCryptoMode.iUid) |
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{
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case KCryptoModeEncrypt: |
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case KCryptoModeDecrypt: |
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break; |
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default: |
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User::Leave(KErrNotSupported); |
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} |
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iCryptoMode = aCryptoMode; |
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} |
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|
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void CAsymmetricCipherImpl::SetPaddingModeL(TUid aPaddingMode) |
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{
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DoSetPaddingModeL(aPaddingMode); |
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Reset(); |
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} |
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|
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void CAsymmetricCipherImpl::DoSetPaddingModeL(TUid aPaddingMode) |
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{
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CPadding* padding(0); |
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TInt padlength = 0; |
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|
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switch (iCryptoMode.iUid) |
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{
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case KCryptoModeEncrypt: |
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padlength = GetMaximumOutputLengthL(); |
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break; |
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case KCryptoModeDecrypt: |
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padlength = GetMaximumInputLengthL(); |
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break; |
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} |
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|
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switch (aPaddingMode.iUid) |
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{
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case KPaddingModeNone: |
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padding = CPaddingNone::NewL(padlength); |
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break; |
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case KPaddingModePkcs1_v1_5_Encryption: |
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padding = CPaddingPKCS1Encryption::NewL(padlength); |
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break; |
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default: |
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User::Leave(KErrNotSupported); |
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} |
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|
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delete iPadding; |
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iPadding = padding; |
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iPaddingMode = aPaddingMode; |
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} |