cryptoservices/certificateandkeymgmt/pkcs7/cmscertchoice.cpp
author Santosh Patil <santosh.v.patil@nokia.com>
Wed, 08 Jul 2009 11:25:26 +0100
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child 8 35751d3474b7
permissions -rw-r--r--
Move the Security package to EPL, and add the implementations of the cryptographic algorithms
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/*
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* Copyright (c) 2006-2009 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 <cmscertchoice.h>
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#include "pkcs7asn1.h"
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#include <asn1dec.h>
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#include <x509cert.h>
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#include <asn1enc.h>
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#include "cmsutils.h"
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//Implementation of CMS Certificate Choice
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CCmsCertificateChoice* CCmsCertificateChoice::NewL(const TDesC8& aRawData)
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	{
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	CCmsCertificateChoice* self = new (ELeave) CCmsCertificateChoice();
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	CleanupStack::PushL(self);
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	self->ConstructL(aRawData);
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	CleanupStack::Pop(self);
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	return self;
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	}
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CCmsCertificateChoice::~CCmsCertificateChoice()
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	{
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	delete iCertificate;
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	delete iEncodedAttributeCertificate;
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	}
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CCmsCertificateChoice::CCmsCertificateChoice()
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	{
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	}
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void CCmsCertificateChoice::ConstructL(const TDesC8& aRawData)
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	{
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	TASN1DecGeneric decGen(aRawData);
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	decGen.InitL();
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	if (decGen.Tag()==EASN1Sequence && decGen.Class()==EUniversal)
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		{
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		// x509 certificates
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		iCertificateType=ECertificateX509;
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		iCertificate = CX509Certificate::NewL(aRawData);
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		}
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	else if (decGen.Tag()==1 && decGen.Class()==EContextSpecific)
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			{
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			// Attribute certificate
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			iCertificateType=ECertificateAttribute;
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			CASN1EncEncoding* enc=CASN1EncEncoding::NewLC(aRawData, EASN1Sequence, EUniversal);
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			iEncodedAttributeCertificate=CmsUtils::CreateDEREncodingLC(*enc);
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			CleanupStack::Pop(iEncodedAttributeCertificate);
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			CleanupStack::PopAndDestroy(enc);
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			}
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		else if (decGen.Tag()==0 && decGen.Class()==EContextSpecific)
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				{
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				// extended certificates not supported
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				iCertificateType=ECertificateExtendedCerificate;
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				User::Leave(KErrNotSupported);
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				}
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			else
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				{
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				User::Leave(KErrArgument);	
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				}		
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	}
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EXPORT_C const CX509Certificate& CCmsCertificateChoice::Certificate(void) const
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	{
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	return *iCertificate;
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	}
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CCmsCertificateChoice* CCmsCertificateChoice::NewLC(const CX509Certificate& aCertificate)
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	{	
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	CCmsCertificateChoice* self = new (ELeave) CCmsCertificateChoice();
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	CleanupStack::PushL(self);
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	self->ConstructL(aCertificate);
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	return self;
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	}
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CCmsCertificateChoice* CCmsCertificateChoice::NewL(const CX509Certificate& aCertificate)
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	{
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	CCmsCertificateChoice* self = CCmsCertificateChoice::NewLC(aCertificate);
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	CleanupStack::Pop();
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	return self;
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	}
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CCmsCertificateChoice* CCmsCertificateChoice::NewLC(TCertificateType aCertType, const TDesC8& aEncodedCertificate)
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	{		
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	CCmsCertificateChoice* self = new (ELeave) CCmsCertificateChoice();
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	CleanupStack::PushL(self);
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	self->ConstructL(aCertType, aEncodedCertificate);
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	return self;
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	}
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CCmsCertificateChoice* CCmsCertificateChoice::NewL(TCertificateType aCertType, const TDesC8& aEncodedCertificate)
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	{
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	CCmsCertificateChoice* self = CCmsCertificateChoice::NewLC(aCertType, aEncodedCertificate);
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	CleanupStack::Pop();
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	return self;
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	}
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void CCmsCertificateChoice::ConstructL(const CX509Certificate& aCertificate)
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	{
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	iCertificateType=ECertificateX509;
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	iCertificate=CX509Certificate::NewL(aCertificate);
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	}
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void CCmsCertificateChoice::ConstructL(TCertificateType aCertType, const TDesC8& aEncodedCertificate)
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	{
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	iCertificateType=aCertType;
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	if (aCertType==ECertificateAttribute)
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		{
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		iEncodedAttributeCertificate=aEncodedCertificate.AllocL();	
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		}
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	else if (aCertType==ECertificateX509)
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			{
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			iCertificate=CX509Certificate::NewL(aEncodedCertificate);	
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			}
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		 else
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			 {
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			 User::Leave(KErrNotSupported);	
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			 }
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	}
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EXPORT_C const HBufC8* CCmsCertificateChoice::AttributeCertificate() const
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	{
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	return iEncodedAttributeCertificate;
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	}
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CASN1EncEncoding* CCmsCertificateChoice::EncodeASN1DERLC() const
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	{
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	CASN1EncEncoding* enc(NULL);
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	if (iCertificateType==ECertificateX509)
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		{
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		enc=CASN1EncEncoding::NewLC(iCertificate->Encoding());
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		}
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	else if (iCertificateType==ECertificateAttribute)
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			{
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			TASN1DecGeneric decGen(*iEncodedAttributeCertificate);
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			decGen.InitL();
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			if (decGen.Tag()!=EASN1Sequence)
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				{
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				User::Leave(KErrArgument);	
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				}
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			enc=CASN1EncEncoding::NewLC(*iEncodedAttributeCertificate, 1, EContextSpecific);
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			}
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		else
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			{
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			//Extended Certificate
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			User::Leave(KErrNotSupported);
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			}
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	return enc;
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	}
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EXPORT_C CCmsCertificateChoice::TCertificateType CCmsCertificateChoice::CertificateType()
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	{
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	return iCertificateType;
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	}