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/*
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* Copyright (c) 2003-2009 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 "pkcs7signerinfo.h"
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#include "pkcs7issuerserial.h"
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#include "pkcs7asn1.h"
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#include "signed.h"
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#include <asn1dec.h>
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#include <x509cert.h>
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CPKCS7SignerInfo* CPKCS7SignerInfo::NewL(const TDesC8& aRawData)
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{
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CPKCS7SignerInfo* self = new (ELeave) CPKCS7SignerInfo();
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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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CPKCS7SignerInfo::~CPKCS7SignerInfo(void)
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{
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delete iIssuerAndSerialNumber;
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delete iDigestAlgorithm;
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delete iDigestEncryptionAlgorithm;
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delete iEncryptedDigest;
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}
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CPKCS7SignerInfo::CPKCS7SignerInfo(void)
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{
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}
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EXPORT_C TInt CPKCS7SignerInfo::Version() const
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{
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return iVersion;
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}
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EXPORT_C const CPKCS7IssuerAndSerialNumber& CPKCS7SignerInfo::IssuerAndSerialNumber() const
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{
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return *iIssuerAndSerialNumber;
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}
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EXPORT_C const CX509AlgorithmIdentifier& CPKCS7SignerInfo::DigestAlgorithm() const
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{
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return *iDigestAlgorithm;
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}
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EXPORT_C const CX509AlgorithmIdentifier& CPKCS7SignerInfo::DigestEncryptionAlgorithm() const
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{
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return *iDigestEncryptionAlgorithm;
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}
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EXPORT_C const TPtrC8 CPKCS7SignerInfo::EncryptedDigest() const
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{
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return *iEncryptedDigest;
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}
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void CPKCS7SignerInfo::ConstructL(const TDesC8& aRawData)
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{
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CArrayPtr<TASN1DecGeneric>* signerInfo = PKCS7ASN1::DecodeSequenceLC(aRawData, 5, 7);
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TASN1DecInteger decInt;
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TInt pos = 3;
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// decodes version
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iVersion = decInt.DecodeDERShortL(*signerInfo->At(0));
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iIssuerAndSerialNumber = CPKCS7IssuerAndSerialNumber::NewL(signerInfo->At(1)->Encoding());
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iDigestAlgorithm = CX509AlgorithmIdentifier::NewL(signerInfo->At(2)->Encoding());
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if(signerInfo->At(pos)->Tag() == 0)
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{
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// authenticated attributes not supported at this time
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pos++;
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}
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iDigestEncryptionAlgorithm = CX509AlgorithmIdentifier::NewL(signerInfo->At(pos++)->Encoding());
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DecodeEncryptedDigestL(signerInfo->At(pos++)->Encoding());
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if(pos < signerInfo->Count() && (signerInfo->At(pos)->Tag() == 0))
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{
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// unauthenticated attributes not supported at this time
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pos++;
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}
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CleanupStack::PopAndDestroy(signerInfo);
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}
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void CPKCS7SignerInfo::DecodeEncryptedDigestL(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() == EASN1OctetString)
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{
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TASN1DecOctetString decOct;
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iEncryptedDigest = decOct.DecodeDERL(decGen);
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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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