--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/cryptoservices/certificateandkeymgmt/pkcs7/pkcs7digestinfo.cpp	Wed Jul 08 11:25:26 2009 +0100
@@ -0,0 +1,107 @@
+/*
+* Copyright (c) 2005-2009 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of the License "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description: 
+*
+*/
+
+ 
+#include "pkcs7digestinfo.h"
+#include "pkcs7asn1.h"
+
+EXPORT_C CPKCS7DigestInfo* CPKCS7DigestInfo::NewL(const TDesC8& aRawData)
+	{
+	CPKCS7DigestInfo* self = new (ELeave) CPKCS7DigestInfo();
+	CleanupStack::PushL(self);
+	self->ConstructL(aRawData);
+	CleanupStack::Pop(self);
+	return self;	
+	}
+	
+CPKCS7DigestInfo::~CPKCS7DigestInfo()
+	{
+    }
+
+CPKCS7DigestInfo::CPKCS7DigestInfo()
+	{
+	}
+	
+EXPORT_C const TDesC8& CPKCS7DigestInfo::Digest() const
+	{
+	return iDigest;
+	}
+
+EXPORT_C TAlgorithmId CPKCS7DigestInfo::Algorithm() const
+	{
+	return iAlgorithmId;
+	}
+
+EXPORT_C const TPtrC8& CPKCS7DigestInfo::EncodedParams() const
+	{
+	return iEncodedParams;
+	}
+	
+void CPKCS7DigestInfo::ConstructL(const TDesC8& aDigestData)
+	{
+    CArrayPtr<TASN1DecGeneric>* digestInfo = PKCS7ASN1::DecodeSequenceLC(aDigestData);
+
+	// Check if both the digestAlgorithm and the Digest are present.
+	if ( digestInfo->Count() != 2 )
+		{
+	    User::Leave(KErrArgument);
+		}
+
+	// DIGEST ALGORITHM
+	// Get the algorithm identifier and the encoded parameters present in the sequence.
+	const TASN1DecGeneric* digestInfoAt0 = digestInfo->At(0);
+	if(digestInfoAt0->Tag() != EASN1Sequence || digestInfoAt0->Class() != EUniversal)
+		{
+		User::Leave(KErrArgument);
+		}
+	CX509AlgorithmIdentifier* digestAlg = CX509AlgorithmIdentifier::NewLC(digestInfo->At(0)->Encoding());
+	TAlgorithmId algorithmId = digestAlg->Algorithm();
+	switch(algorithmId)
+		{
+		case EMD2:
+			{
+			iAlgorithmId = EMD2;
+			}
+			break;
+		case EMD5:
+			{
+			iAlgorithmId = EMD5;
+			}
+			break;
+		case ESHA1:
+			{
+			iAlgorithmId = ESHA1;	
+			}
+			break;
+		default:
+			User::Leave(KErrNotSupported);
+		}
+	
+	iEncodedParams.Set(digestAlg->EncodedParams()); 
+		
+	// DIGEST  
+	const TASN1DecGeneric* digestInfoAt1 = digestInfo->At(1);
+	if(digestInfoAt1->Tag() != EASN1OctetString || digestInfoAt1->Class() != EUniversal)
+		{
+		User::Leave(KErrArgument);
+		}
+	TASN1DecGeneric octetStringDecoder(*(digestInfo->At(1)));
+	octetStringDecoder.InitL();
+	iDigest.Set(octetStringDecoder.GetContentDER());
+	
+	CleanupStack::PopAndDestroy(2,digestInfo);// digestInfo, digestAlg
+    }