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/**
* @file llnullcipher.cpp
* @brief Implementation of a cipher which does not encrypt.
*
* $LicenseInfo:firstyear=2003&license=viewerlgpl$
* Second Life Viewer Source Code
* Copyright (C) 2010, Linden Research, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License only.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
* $/LicenseInfo$
*/
#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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