--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/cryptoservices/certificateandkeymgmt/asn1/integerdec.cpp	Wed Jul 08 11:25:26 2009 +0100
@@ -0,0 +1,90 @@
+/*
+* Copyright (c) 1998-2009 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: 
+* This file contains the implementation of the ASN1 integer class.
+* As noted in Notes.txt there are two approaches to the storage of data by
+* this class, it can either hold a copy of the data or a pointer to something
+* else which holds a copy of the data.
+* The object contained within this file encapsulates the ASN1 integer object
+* as described in X208 section 14 and the encoding described in X209 section
+* 8. 
+*
+*/
+
+
+#include "asn1dec.h"
+#include <bigint.h>
+
+EXPORT_C TASN1DecInteger::TASN1DecInteger()
+
+	{
+	}
+
+EXPORT_C TInt TASN1DecInteger::DecodeDERShortL(const TDesC8& aSource,TInt& aPos)
+	{
+	TPtrC8 Source=aSource.Mid(aPos);
+	TASN1DecGeneric gen(Source);
+	gen.InitL();
+	TInt res = DecodeDERShortL(gen);
+	aPos+=gen.LengthDER();
+	return res;
+	}
+
+EXPORT_C TInt TASN1DecInteger::DecodeDERShortL(const TASN1DecGeneric& aSource)
+	{
+	TInt res = 0;
+	TPtrC8 ptr(aSource.GetContentDER());
+	//stop stupid compiler warning
+	TUint length = (TUint)(ptr.Length());
+	if (length == 0) // DEF055722 
+		{
+		User::Leave(KErrArgument);
+		}
+	if (length > sizeof(TInt))
+		{
+		User::Leave(KErrTooBig);
+		}
+	TInt8 i;
+	if (ptr[0]&128)
+		{
+		res = -1;
+		}
+	for (i=0;i<ptr.Length();i++)
+		{
+		res<<=8;
+		res+=ptr[i];
+		}
+	return res;
+	}
+
+EXPORT_C RInteger TASN1DecInteger::DecodeDERLongL(const TDesC8& aSource,TInt& aPos)
+	{
+	TPtrC8 Source=aSource.Right(aSource.Length() - aPos);
+	TASN1DecGeneric gen(Source);
+	gen.InitL();
+	RInteger res = DecodeDERLongL(gen);
+	aPos+=gen.LengthDER();
+	return res;
+	}
+
+EXPORT_C RInteger TASN1DecInteger::DecodeDERLongL(const TASN1DecGeneric& aSource)
+	{
+	const TDesC8& data = aSource.GetContentDER();
+//	JCS 14/03/2003: Changed call to NewL from NewSignedL() because current
+//	problem in RInteger for signed code means this sometimes returns incorrect
+//	results causing failure in certstore testcode.  However, making this change
+//	does cause problems in TASN1 now (posted defect DEF021796).
+	RInteger res = RInteger::NewL(data);//aSource.GetContentDER());
+	return (res);
+	}