1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/os/security/cryptoservices/certificateandkeymgmt/pkcs7/pkcs7digestinfo.cpp	Fri Jun 15 03:10:57 2012 +0200
     1.3 @@ -0,0 +1,107 @@
     1.4 +/*
     1.5 +* Copyright (c) 2005-2009 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 "pkcs7digestinfo.h"
    1.23 +#include "pkcs7asn1.h"
    1.24 +
    1.25 +EXPORT_C CPKCS7DigestInfo* CPKCS7DigestInfo::NewL(const TDesC8& aRawData)
    1.26 +	{
    1.27 +	CPKCS7DigestInfo* self = new (ELeave) CPKCS7DigestInfo();
    1.28 +	CleanupStack::PushL(self);
    1.29 +	self->ConstructL(aRawData);
    1.30 +	CleanupStack::Pop(self);
    1.31 +	return self;	
    1.32 +	}
    1.33 +	
    1.34 +CPKCS7DigestInfo::~CPKCS7DigestInfo()
    1.35 +	{
    1.36 +    }
    1.37 +
    1.38 +CPKCS7DigestInfo::CPKCS7DigestInfo()
    1.39 +	{
    1.40 +	}
    1.41 +	
    1.42 +EXPORT_C const TDesC8& CPKCS7DigestInfo::Digest() const
    1.43 +	{
    1.44 +	return iDigest;
    1.45 +	}
    1.46 +
    1.47 +EXPORT_C TAlgorithmId CPKCS7DigestInfo::Algorithm() const
    1.48 +	{
    1.49 +	return iAlgorithmId;
    1.50 +	}
    1.51 +
    1.52 +EXPORT_C const TPtrC8& CPKCS7DigestInfo::EncodedParams() const
    1.53 +	{
    1.54 +	return iEncodedParams;
    1.55 +	}
    1.56 +	
    1.57 +void CPKCS7DigestInfo::ConstructL(const TDesC8& aDigestData)
    1.58 +	{
    1.59 +    CArrayPtr<TASN1DecGeneric>* digestInfo = PKCS7ASN1::DecodeSequenceLC(aDigestData);
    1.60 +
    1.61 +	// Check if both the digestAlgorithm and the Digest are present.
    1.62 +	if ( digestInfo->Count() != 2 )
    1.63 +		{
    1.64 +	    User::Leave(KErrArgument);
    1.65 +		}
    1.66 +
    1.67 +	// DIGEST ALGORITHM
    1.68 +	// Get the algorithm identifier and the encoded parameters present in the sequence.
    1.69 +	const TASN1DecGeneric* digestInfoAt0 = digestInfo->At(0);
    1.70 +	if(digestInfoAt0->Tag() != EASN1Sequence || digestInfoAt0->Class() != EUniversal)
    1.71 +		{
    1.72 +		User::Leave(KErrArgument);
    1.73 +		}
    1.74 +	CX509AlgorithmIdentifier* digestAlg = CX509AlgorithmIdentifier::NewLC(digestInfo->At(0)->Encoding());
    1.75 +	TAlgorithmId algorithmId = digestAlg->Algorithm();
    1.76 +	switch(algorithmId)
    1.77 +		{
    1.78 +		case EMD2:
    1.79 +			{
    1.80 +			iAlgorithmId = EMD2;
    1.81 +			}
    1.82 +			break;
    1.83 +		case EMD5:
    1.84 +			{
    1.85 +			iAlgorithmId = EMD5;
    1.86 +			}
    1.87 +			break;
    1.88 +		case ESHA1:
    1.89 +			{
    1.90 +			iAlgorithmId = ESHA1;	
    1.91 +			}
    1.92 +			break;
    1.93 +		default:
    1.94 +			User::Leave(KErrNotSupported);
    1.95 +		}
    1.96 +	
    1.97 +	iEncodedParams.Set(digestAlg->EncodedParams()); 
    1.98 +		
    1.99 +	// DIGEST  
   1.100 +	const TASN1DecGeneric* digestInfoAt1 = digestInfo->At(1);
   1.101 +	if(digestInfoAt1->Tag() != EASN1OctetString || digestInfoAt1->Class() != EUniversal)
   1.102 +		{
   1.103 +		User::Leave(KErrArgument);
   1.104 +		}
   1.105 +	TASN1DecGeneric octetStringDecoder(*(digestInfo->At(1)));
   1.106 +	octetStringDecoder.InitL();
   1.107 +	iDigest.Set(octetStringDecoder.GetContentDER());
   1.108 +	
   1.109 +	CleanupStack::PopAndDestroy(2,digestInfo);// digestInfo, digestAlg
   1.110 +    }