MCL/sf/os/security: cryptoservices/certificateandkeymgmt/asn1/bitstrdec.cpp@2c201484c85f (annotated)

0 2c201484c85f Move the Security package to EPL, and add the implementations of the cryptographic algorithms Santosh Patil <santosh.v.patil@nokia.com> parents: diff changeset	1	/*
2c201484c85f Move the Security package to EPL, and add the implementations of the cryptographic algorithms Santosh Patil <santosh.v.patil@nokia.com> parents: diff changeset	2	* Copyright (c) 1998-2009 Nokia Corporation and/or its subsidiary(-ies).
2c201484c85f Move the Security package to EPL, and add the implementations of the cryptographic algorithms Santosh Patil <santosh.v.patil@nokia.com> parents: diff changeset	3	* All rights reserved.
2c201484c85f Move the Security package to EPL, and add the implementations of the cryptographic algorithms Santosh Patil <santosh.v.patil@nokia.com> parents: diff changeset	4	* This component and the accompanying materials are made available
2c201484c85f Move the Security package to EPL, and add the implementations of the cryptographic algorithms Santosh Patil <santosh.v.patil@nokia.com> parents: diff changeset	5	* under the terms of the License "Eclipse Public License v1.0"
2c201484c85f Move the Security package to EPL, and add the implementations of the cryptographic algorithms Santosh Patil <santosh.v.patil@nokia.com> parents: diff changeset	6	* which accompanies this distribution, and is available
2c201484c85f Move the Security package to EPL, and add the implementations of the cryptographic algorithms Santosh Patil <santosh.v.patil@nokia.com> parents: diff changeset	7	* at the URL "http://www.eclipse.org/legal/epl-v10.html".
2c201484c85f Move the Security package to EPL, and add the implementations of the cryptographic algorithms Santosh Patil <santosh.v.patil@nokia.com> parents: diff changeset	8	*
2c201484c85f Move the Security package to EPL, and add the implementations of the cryptographic algorithms Santosh Patil <santosh.v.patil@nokia.com> parents: diff changeset	9	* Initial Contributors:
2c201484c85f Move the Security package to EPL, and add the implementations of the cryptographic algorithms Santosh Patil <santosh.v.patil@nokia.com> parents: diff changeset	10	* Nokia Corporation - initial contribution.
2c201484c85f Move the Security package to EPL, and add the implementations of the cryptographic algorithms Santosh Patil <santosh.v.patil@nokia.com> parents: diff changeset	11	*
2c201484c85f Move the Security package to EPL, and add the implementations of the cryptographic algorithms Santosh Patil <santosh.v.patil@nokia.com> parents: diff changeset	12	* Contributors:
2c201484c85f Move the Security package to EPL, and add the implementations of the cryptographic algorithms Santosh Patil <santosh.v.patil@nokia.com> parents: diff changeset	13	*
2c201484c85f Move the Security package to EPL, and add the implementations of the cryptographic algorithms Santosh Patil <santosh.v.patil@nokia.com> parents: diff changeset	14	* Description:
2c201484c85f Move the Security package to EPL, and add the implementations of the cryptographic algorithms Santosh Patil <santosh.v.patil@nokia.com> parents: diff changeset	15	* This file contains the object implementing the Bitstring ASN1 object.
2c201484c85f Move the Security package to EPL, and add the implementations of the cryptographic algorithms Santosh Patil <santosh.v.patil@nokia.com> parents: diff changeset	16	* There is no handling for constructed form of Bitstring right now.
2c201484c85f Move the Security package to EPL, and add the implementations of the cryptographic algorithms Santosh Patil <santosh.v.patil@nokia.com> parents: diff changeset	17	*
2c201484c85f Move the Security package to EPL, and add the implementations of the cryptographic algorithms Santosh Patil <santosh.v.patil@nokia.com> parents: diff changeset	18	*/
2c201484c85f Move the Security package to EPL, and add the implementations of the cryptographic algorithms Santosh Patil <santosh.v.patil@nokia.com> parents: diff changeset	19
2c201484c85f Move the Security package to EPL, and add the implementations of the cryptographic algorithms Santosh Patil <santosh.v.patil@nokia.com> parents: diff changeset	20
2c201484c85f Move the Security package to EPL, and add the implementations of the cryptographic algorithms Santosh Patil <santosh.v.patil@nokia.com> parents: diff changeset	21	#include "asn1dec.h"
2c201484c85f Move the Security package to EPL, and add the implementations of the cryptographic algorithms Santosh Patil <santosh.v.patil@nokia.com> parents: diff changeset	22
2c201484c85f Move the Security package to EPL, and add the implementations of the cryptographic algorithms Santosh Patil <santosh.v.patil@nokia.com> parents: diff changeset	23	EXPORT_C TASN1DecBitString::TASN1DecBitString(void)
2c201484c85f Move the Security package to EPL, and add the implementations of the cryptographic algorithms Santosh Patil <santosh.v.patil@nokia.com> parents: diff changeset	24	{
2c201484c85f Move the Security package to EPL, and add the implementations of the cryptographic algorithms Santosh Patil <santosh.v.patil@nokia.com> parents: diff changeset	25	}
2c201484c85f Move the Security package to EPL, and add the implementations of the cryptographic algorithms Santosh Patil <santosh.v.patil@nokia.com> parents: diff changeset	26
2c201484c85f Move the Security package to EPL, and add the implementations of the cryptographic algorithms Santosh Patil <santosh.v.patil@nokia.com> parents: diff changeset	27	EXPORT_C HBufC8* TASN1DecBitString::DecodeDERL(const TDesC8& /aSource/,TInt& /aPos/)
2c201484c85f Move the Security package to EPL, and add the implementations of the cryptographic algorithms Santosh Patil <santosh.v.patil@nokia.com> parents: diff changeset	28	{
2c201484c85f Move the Security package to EPL, and add the implementations of the cryptographic algorithms Santosh Patil <santosh.v.patil@nokia.com> parents: diff changeset	29	User::Leave(KErrNotSupported);
2c201484c85f Move the Security package to EPL, and add the implementations of the cryptographic algorithms Santosh Patil <santosh.v.patil@nokia.com> parents: diff changeset	30	return NULL;
2c201484c85f Move the Security package to EPL, and add the implementations of the cryptographic algorithms Santosh Patil <santosh.v.patil@nokia.com> parents: diff changeset	31	}
2c201484c85f Move the Security package to EPL, and add the implementations of the cryptographic algorithms Santosh Patil <santosh.v.patil@nokia.com> parents: diff changeset	32
2c201484c85f Move the Security package to EPL, and add the implementations of the cryptographic algorithms Santosh Patil <santosh.v.patil@nokia.com> parents: diff changeset	33	EXPORT_C HBufC8* TASN1DecBitString::DecodeDERL(const TASN1DecGeneric& /aSource/)
2c201484c85f Move the Security package to EPL, and add the implementations of the cryptographic algorithms Santosh Patil <santosh.v.patil@nokia.com> parents: diff changeset	34	{
2c201484c85f Move the Security package to EPL, and add the implementations of the cryptographic algorithms Santosh Patil <santosh.v.patil@nokia.com> parents: diff changeset	35	User::Leave(KErrNotSupported);
2c201484c85f Move the Security package to EPL, and add the implementations of the cryptographic algorithms Santosh Patil <santosh.v.patil@nokia.com> parents: diff changeset	36	return NULL;
2c201484c85f Move the Security package to EPL, and add the implementations of the cryptographic algorithms Santosh Patil <santosh.v.patil@nokia.com> parents: diff changeset	37	}
2c201484c85f Move the Security package to EPL, and add the implementations of the cryptographic algorithms Santosh Patil <santosh.v.patil@nokia.com> parents: diff changeset	38
2c201484c85f Move the Security package to EPL, and add the implementations of the cryptographic algorithms Santosh Patil <santosh.v.patil@nokia.com> parents: diff changeset	39	EXPORT_C HBufC8* TASN1DecBitString::ExtractOctetStringL(const TDesC8& aSource,TInt& aPos)
2c201484c85f Move the Security package to EPL, and add the implementations of the cryptographic algorithms Santosh Patil <santosh.v.patil@nokia.com> parents: diff changeset	40	{
2c201484c85f Move the Security package to EPL, and add the implementations of the cryptographic algorithms Santosh Patil <santosh.v.patil@nokia.com> parents: diff changeset	41	TASN1DecGeneric gen(aSource.Right(aSource.Length() - aPos));
2c201484c85f Move the Security package to EPL, and add the implementations of the cryptographic algorithms Santosh Patil <santosh.v.patil@nokia.com> parents: diff changeset	42	gen.InitL();
2c201484c85f Move the Security package to EPL, and add the implementations of the cryptographic algorithms Santosh Patil <santosh.v.patil@nokia.com> parents: diff changeset	43	HBufC8* res = ExtractOctetStringL(gen);
2c201484c85f Move the Security package to EPL, and add the implementations of the cryptographic algorithms Santosh Patil <santosh.v.patil@nokia.com> parents: diff changeset	44	aPos+=gen.LengthDER();
2c201484c85f Move the Security package to EPL, and add the implementations of the cryptographic algorithms Santosh Patil <santosh.v.patil@nokia.com> parents: diff changeset	45	return res;
2c201484c85f Move the Security package to EPL, and add the implementations of the cryptographic algorithms Santosh Patil <santosh.v.patil@nokia.com> parents: diff changeset	46	}
2c201484c85f Move the Security package to EPL, and add the implementations of the cryptographic algorithms Santosh Patil <santosh.v.patil@nokia.com> parents: diff changeset	47
2c201484c85f Move the Security package to EPL, and add the implementations of the cryptographic algorithms Santosh Patil <santosh.v.patil@nokia.com> parents: diff changeset	48	EXPORT_C HBufC8* TASN1DecBitString::ExtractOctetStringL(const TASN1DecGeneric& aSource)
2c201484c85f Move the Security package to EPL, and add the implementations of the cryptographic algorithms Santosh Patil <santosh.v.patil@nokia.com> parents: diff changeset	49	{
2c201484c85f Move the Security package to EPL, and add the implementations of the cryptographic algorithms Santosh Patil <santosh.v.patil@nokia.com> parents: diff changeset	50	TPtrC8 encoding = aSource.GetContentDER();
2c201484c85f Move the Security package to EPL, and add the implementations of the cryptographic algorithms Santosh Patil <santosh.v.patil@nokia.com> parents: diff changeset	51
2c201484c85f Move the Security package to EPL, and add the implementations of the cryptographic algorithms Santosh Patil <santosh.v.patil@nokia.com> parents: diff changeset	52	// Special case. The empty bit string. (No padding length octet)
2c201484c85f Move the Security package to EPL, and add the implementations of the cryptographic algorithms Santosh Patil <santosh.v.patil@nokia.com> parents: diff changeset	53	if (encoding.Length() == 0 )
2c201484c85f Move the Security package to EPL, and add the implementations of the cryptographic algorithms Santosh Patil <santosh.v.patil@nokia.com> parents: diff changeset	54	{
2c201484c85f Move the Security package to EPL, and add the implementations of the cryptographic algorithms Santosh Patil <santosh.v.patil@nokia.com> parents: diff changeset	55	return encoding.AllocL();
2c201484c85f Move the Security package to EPL, and add the implementations of the cryptographic algorithms Santosh Patil <santosh.v.patil@nokia.com> parents: diff changeset	56	}
2c201484c85f Move the Security package to EPL, and add the implementations of the cryptographic algorithms Santosh Patil <santosh.v.patil@nokia.com> parents: diff changeset	57
2c201484c85f Move the Security package to EPL, and add the implementations of the cryptographic algorithms Santosh Patil <santosh.v.patil@nokia.com> parents: diff changeset	58	// Length must either be 0 for the empty string or >= 2 because
2c201484c85f Move the Security package to EPL, and add the implementations of the cryptographic algorithms Santosh Patil <santosh.v.patil@nokia.com> parents: diff changeset	59	// of the padding length octet.
2c201484c85f Move the Security package to EPL, and add the implementations of the cryptographic algorithms Santosh Patil <santosh.v.patil@nokia.com> parents: diff changeset	60	if (encoding.Length() == 1)
2c201484c85f Move the Security package to EPL, and add the implementations of the cryptographic algorithms Santosh Patil <santosh.v.patil@nokia.com> parents: diff changeset	61	{
2c201484c85f Move the Security package to EPL, and add the implementations of the cryptographic algorithms Santosh Patil <santosh.v.patil@nokia.com> parents: diff changeset	62	User::Leave(KErrArgument);
2c201484c85f Move the Security package to EPL, and add the implementations of the cryptographic algorithms Santosh Patil <santosh.v.patil@nokia.com> parents: diff changeset	63	}
2c201484c85f Move the Security package to EPL, and add the implementations of the cryptographic algorithms Santosh Patil <santosh.v.patil@nokia.com> parents: diff changeset	64
2c201484c85f Move the Security package to EPL, and add the implementations of the cryptographic algorithms Santosh Patil <santosh.v.patil@nokia.com> parents: diff changeset	65	TUint8 paddingLength = encoding[0];
2c201484c85f Move the Security package to EPL, and add the implementations of the cryptographic algorithms Santosh Patil <santosh.v.patil@nokia.com> parents: diff changeset	66	if (paddingLength > 7)
2c201484c85f Move the Security package to EPL, and add the implementations of the cryptographic algorithms Santosh Patil <santosh.v.patil@nokia.com> parents: diff changeset	67	{
2c201484c85f Move the Security package to EPL, and add the implementations of the cryptographic algorithms Santosh Patil <santosh.v.patil@nokia.com> parents: diff changeset	68	User::Leave(KErrArgument);
2c201484c85f Move the Security package to EPL, and add the implementations of the cryptographic algorithms Santosh Patil <santosh.v.patil@nokia.com> parents: diff changeset	69	}
2c201484c85f Move the Security package to EPL, and add the implementations of the cryptographic algorithms Santosh Patil <santosh.v.patil@nokia.com> parents: diff changeset	70	TPtrC8 pEncoding = encoding.Right(encoding.Length()-1);
2c201484c85f Move the Security package to EPL, and add the implementations of the cryptographic algorithms Santosh Patil <santosh.v.patil@nokia.com> parents: diff changeset	71	HBufC8* octetStr = pEncoding.AllocL();
2c201484c85f Move the Security package to EPL, and add the implementations of the cryptographic algorithms Santosh Patil <santosh.v.patil@nokia.com> parents: diff changeset	72	TPtr8 pEncKey = octetStr->Des();
2c201484c85f Move the Security package to EPL, and add the implementations of the cryptographic algorithms Santosh Patil <santosh.v.patil@nokia.com> parents: diff changeset	73
2c201484c85f Move the Security package to EPL, and add the implementations of the cryptographic algorithms Santosh Patil <santosh.v.patil@nokia.com> parents: diff changeset	74	//stop stupid compiler warning
2c201484c85f Move the Security package to EPL, and add the implementations of the cryptographic algorithms Santosh Patil <santosh.v.patil@nokia.com> parents: diff changeset	75	TUint8 mask =(TUint8)(255 << paddingLength);
2c201484c85f Move the Security package to EPL, and add the implementations of the cryptographic algorithms Santosh Patil <santosh.v.patil@nokia.com> parents: diff changeset	76	//stop stupid compiler warning
2c201484c85f Move the Security package to EPL, and add the implementations of the cryptographic algorithms Santosh Patil <santosh.v.patil@nokia.com> parents: diff changeset	77	pEncKey[pEncKey.Length()-1] = (TUint8) ((pEncKey[pEncKey.Length()-1]) & mask);
2c201484c85f Move the Security package to EPL, and add the implementations of the cryptographic algorithms Santosh Patil <santosh.v.patil@nokia.com> parents: diff changeset	78	return octetStr;
2c201484c85f Move the Security package to EPL, and add the implementations of the cryptographic algorithms Santosh Patil <santosh.v.patil@nokia.com> parents: diff changeset	79	}

author	Santosh Patil <santosh.v.patil@nokia.com>
	Wed, 08 Jul 2009 11:25:26 +0100
changeset 0	2c201484c85f
child 8	35751d3474b7
permissions	-rw-r--r--