FCL/sf/os/security: cryptoservices/certificateandkeymgmt/asn1/base128enc.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) 2001-2009 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	* Implementation for TASN1EncBase128 class.
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	*
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	#include "base128enc.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	21
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	TASN1EncBase128DER::TASN1EncBase128DER(TUint aInt) : iInt(aInt), iLengthDER(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	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	CalculateLengthDER();
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
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	TUint TASN1EncBase128DER::LengthDER() const
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	{
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	return iLengthDER;
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
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	void TASN1EncBase128DER::CalculateLengthDER()
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	{
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	iLengthDER = 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	38	TUint working = iInt;
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	while (working >>= 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	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	++iLengthDER;
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	}
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	}
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
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
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	void TASN1EncBase128DER::WriteDERL(TDes8& aBuf, TUint& aPos) const
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	__ASSERT_DEBUG(aBuf.Length() - aPos >= STATIC_CAST(TUint8, iLengthDER),
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	User::Leave(KErrBadDescriptor));
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
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	TInt last = aPos + iLengthDER - 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	52	TUint working = iInt;
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	for (TUint cursor = last; cursor >= aPos; --cursor)
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	// Cast takes least significant 8 bits only (actually, we only need 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	56	aBuf[cursor] = STATIC_CAST(TUint8, working);
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	aBuf[cursor] \|= 0x80; // Top bit always set to 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	58	working >>= 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	59	}
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	// ...except top bit on last byte is 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	61	aBuf[last] &= 0x7F;
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
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	aPos += iLengthDER;
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	}

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--