1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/os/security/cryptoplugins/cryptospiplugins/source/softwarecrypto/asymmetriccipherimpl.cpp	Fri Jun 15 03:10:57 2012 +0200
     1.3 @@ -0,0 +1,166 @@
     1.4 +/*
     1.5 +* Copyright (c) 2006-2009 Nokia Corporation and/or its subsidiary(-ies).
     1.6 +* All rights reserved.
     1.7 +* This component and the accompanying materials are made available
     1.8 +* under the terms of the License "Eclipse Public License v1.0"
     1.9 +* which accompanies this distribution, and is available
    1.10 +* at the URL "http://www.eclipse.org/legal/epl-v10.html".
    1.11 +*
    1.12 +* Initial Contributors:
    1.13 +* Nokia Corporation - initial contribution.
    1.14 +*
    1.15 +* Contributors:
    1.16 +*
    1.17 +* Description: 
    1.18 +*
    1.19 +*/
    1.20 +
    1.21 +
    1.22 +#include <e32def.h>
    1.23 +#include "keys.h"
    1.24 +#include "asymmetriccipherimpl.h"
    1.25 +#include <cryptostrength.h>
    1.26 +#include <cryptospi/cryptospidef.h>
    1.27 +#include <cryptospi/plugincharacteristics.h>
    1.28 +#include "pluginconfig.h"
    1.29 +#include "common/inlines.h"
    1.30 +
    1.31 +using namespace SoftwareCrypto;
    1.32 +
    1.33 +CAsymmetricCipherImpl::CAsymmetricCipherImpl(
    1.34 +	TUid aCryptoMode,
    1.35 +	TUid aPaddingMode) :
    1.36 +	iCryptoMode(aCryptoMode),
    1.37 +	iPaddingMode(aPaddingMode)
    1.38 +	{
    1.39 +	}
    1.40 +
    1.41 +void CAsymmetricCipherImpl::ConstructL(const CKey& aKey)
    1.42 +	{
    1.43 +	DoSetCryptoModeL(iCryptoMode);
    1.44 +	DoSetKeyL(aKey);
    1.45 +	DoSetPaddingModeL(iPaddingMode);
    1.46 +	}
    1.47 +	
    1.48 +CAsymmetricCipherImpl::~CAsymmetricCipherImpl()
    1.49 +	{
    1.50 +	delete iKey;
    1.51 +	delete iPadding;
    1.52 +	}
    1.53 +		
    1.54 +void CAsymmetricCipherImpl::Close()
    1.55 +	{
    1.56 +	delete this;
    1.57 +	}
    1.58 +	
    1.59 +void CAsymmetricCipherImpl::Reset()
    1.60 +	{
    1.61 +	}
    1.62 +	
    1.63 +TAny* CAsymmetricCipherImpl::GetExtension(TUid /*aExtensionId*/)
    1.64 +	{
    1.65 +	return 0;
    1.66 +	}
    1.67 +	
    1.68 +void CAsymmetricCipherImpl::GetCharacteristicsL(const TAny*& aPluginCharacteristics)
    1.69 +	{
    1.70 +	TInt numCiphers = sizeof(KAsymmetricCipherCharacteristics)/sizeof(TAsymmetricCipherCharacteristics*);
    1.71 +	TInt32 implUid = ImplementationUid().iUid;
    1.72 +	for (TInt i = 0; i < numCiphers; ++i)
    1.73 +		{
    1.74 +		if (KAsymmetricCipherCharacteristics[i]->cmn.iImplementationUID == implUid)
    1.75 +			{
    1.76 +			aPluginCharacteristics = KAsymmetricCipherCharacteristics[i];
    1.77 +			break;
    1.78 +			}
    1.79 +		}
    1.80 +	}
    1.81 +
    1.82 +void CAsymmetricCipherImpl::SetKeyL(const CKey& aKey)
    1.83 +	{
    1.84 +	DoSetKeyL(aKey);
    1.85 +	}
    1.86 +
    1.87 +void CAsymmetricCipherImpl::DoSetKeyL(const CKey& aKey)
    1.88 +	{
    1.89 +	delete iKey;								// delete any previous key
    1.90 +	iKey = CKey::NewL(aKey);
    1.91 +	}
    1.92 +
    1.93 +void CAsymmetricCipherImpl::SetCryptoModeL(TUid aCryptoMode)
    1.94 +	{
    1.95 +	DoSetCryptoModeL(aCryptoMode);
    1.96 +	Reset();
    1.97 +	}
    1.98 +	
    1.99 +void CAsymmetricCipherImpl::DoSetCryptoModeL(TUid aCryptoMode)
   1.100 +	{
   1.101 +	switch (aCryptoMode.iUid)
   1.102 +		{
   1.103 +		case KCryptoModeEncrypt:
   1.104 +		case KCryptoModeDecrypt:
   1.105 +			break;
   1.106 +		default:
   1.107 +			User::Leave(KErrNotSupported);
   1.108 +		}
   1.109 +	iCryptoMode = aCryptoMode;
   1.110 +	}
   1.111 +
   1.112 +void CAsymmetricCipherImpl::SetPaddingModeL(TUid aPaddingMode)
   1.113 +	{
   1.114 +	DoSetPaddingModeL(aPaddingMode);
   1.115 +	Reset();
   1.116 +	}
   1.117 +	
   1.118 +void CAsymmetricCipherImpl::DoSetPaddingModeL(TUid aPaddingMode)
   1.119 +	{
   1.120 +	CPadding* padding(0);
   1.121 +	TInt padlength = 0;
   1.122 +	
   1.123 +	switch (iCryptoMode.iUid)
   1.124 +		{
   1.125 +		case KCryptoModeEncrypt:
   1.126 +			padlength = GetMaximumOutputLengthL();
   1.127 +			break;
   1.128 +		case KCryptoModeDecrypt:
   1.129 +			padlength = GetMaximumInputLengthL();
   1.130 +			break;
   1.131 +		}
   1.132 +		
   1.133 +	switch (aPaddingMode.iUid)
   1.134 +		{
   1.135 +		case KPaddingModeNone:
   1.136 +			padding = CPaddingNone::NewL(padlength);
   1.137 +			break;
   1.138 +		case KPaddingModePkcs1_v1_5_Encryption:
   1.139 +			padding = CPaddingPKCS1Encryption::NewL(padlength);
   1.140 +			break;
   1.141 +		default:
   1.142 +			User::Leave(KErrNotSupported);
   1.143 +		}
   1.144 +		
   1.145 +	delete iPadding;
   1.146 +	iPadding = padding;
   1.147 +	iPaddingMode = aPaddingMode;
   1.148 +	}
   1.149 +
   1.150 +// Methods implemented in subclass. No coverage here.
   1.151 +#ifdef _BullseyeCoverage
   1.152 +#pragma suppress_warnings on
   1.153 +#pragma BullseyeCoverage off
   1.154 +#pragma suppress_warnings off
   1.155 +#endif
   1.156 +TInt CAsymmetricCipherImpl::GetMaximumOutputLengthL() const
   1.157 +	{
   1.158 +	// Override in subclass
   1.159 +	User::Leave(KErrNotSupported);
   1.160 +	return 0;
   1.161 +	}
   1.162 +
   1.163 +TInt CAsymmetricCipherImpl::GetMaximumInputLengthL() const
   1.164 +	{
   1.165 +	// Override in subclass
   1.166 +	User::Leave(KErrNotSupported);
   1.167 +	return 0;
   1.168 +	}
   1.169 +