--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/cryptoservices/certificateandkeymgmt/asn1/intenc.cpp	Wed Jul 08 11:25:26 2009 +0100
@@ -0,0 +1,75 @@
+/*
+* Copyright (c) 2001-2009 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: 
+* Implementation for class encoding TInt in ASN1 DER
+*
+*/
+
+
+#include <asn1enc.h>
+
+EXPORT_C CASN1EncInt* CASN1EncInt::NewLC(const TInt aInt)
+	{
+	CASN1EncInt* self = new (ELeave) CASN1EncInt(aInt);
+	CleanupStack::PushL(self);
+	self->ConstructL();
+	return self;
+	}
+
+EXPORT_C CASN1EncInt* CASN1EncInt::NewL(const TInt aInt)
+	{
+	CASN1EncInt* self = NewLC(aInt);
+	CleanupStack::Pop(self);
+	return self;
+	}
+
+CASN1EncInt::CASN1EncInt(const TInt aInt)
+: CASN1EncPrimitive(EASN1Integer), iInt(aInt)
+	{
+	}
+
+void CASN1EncInt::CalculateContentsLengthDER()
+	{
+	iContentsLengthDER = 1;
+
+	// Flip bits in -ve numbers
+	TUint working = iInt < 0 ? ~iInt : iInt;
+	TUint last = working;
+	while (working >>= 8)
+		{
+		last = working;
+		++iContentsLengthDER;
+		}
+	
+	// If most sig non-zero byte had a 1 top bit, we'll need the next byte too
+	// (applies to both +ve and -ve cases)
+	if (last & 0x80)
+		{
+		++iContentsLengthDER;
+		}
+	}
+
+
+void CASN1EncInt::WriteContentsDERL(TDes8& aBuf) const
+	{
+	// Unsigned, so operator>>= works sensibly
+	TUint working = iInt;
+	TUint position = iContentsLengthDER;
+	while (position)
+		{
+		// Cast takes least sig 8 bits
+		aBuf[--position] = STATIC_CAST(TUint8, working);
+		working >>= 8;
+		}
+	}