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/**
* @file llnullcipher.cpp
* @brief Implementation of a cipher which does not encrypt.
*
* $LicenseInfo:firstyear=2003&license=viewergpl$
*
* Copyright (c) 2003-2009, Linden Research, Inc.
*
* Second Life Viewer Source Code
* The source code in this file ("Source Code") is provided by Linden Lab
* to you under the terms of the GNU General Public License, version 2.0
* ("GPL"), unless you have obtained a separate licensing agreement
* ("Other License"), formally executed by you and Linden Lab. Terms of
* the GPL can be found in doc/GPL-license.txt in this distribution, or
* online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
*
* There are special exceptions to the terms and conditions of the GPL as
* it is applied to this Source Code. View the full text of the exception
* in the file doc/FLOSS-exception.txt in this software distribution, or
* online at http://secondlifegrid.net/programs/open_source/licensing/flossexception
*
* By copying, modifying or distributing this software, you acknowledge
* that you have read and understood your obligations described above,
* and agree to abide by those obligations.
*
* ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
* WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
* COMPLETENESS OR PERFORMANCE.
* $/LicenseInfo$
*/
#include "linden_common.h"
#include "llnullcipher.h"
///----------------------------------------------------------------------------
/// Class LLNullCipher
///----------------------------------------------------------------------------
U32 LLNullCipher::encrypt(const U8* src, U32 src_len, U8* dst, U32 dst_len)
{
if((src_len == dst_len) && src && dst)
{
memmove(dst, src, src_len);
return src_len;
}
return 0;
}
U32 LLNullCipher::decrypt(const U8* src, U32 src_len, U8* dst, U32 dst_len)
{
if((src_len == dst_len) && src && dst)
{
memmove(dst, src, src_len);
return src_len;
}
return 0;
}
U32 LLNullCipher::requiredEncryptionSpace(U32 len) const
{
return len;
}
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