PageRenderTime 19ms CodeModel.GetById 10ms app.highlight 5ms RepoModel.GetById 1ms app.codeStats 0ms

/indra/llmessage/llnullcipher.cpp

https://bitbucket.org/lindenlab/viewer-beta/
C++ | 58 lines | 24 code | 6 blank | 28 comment | 8 complexity | f993fcc64d0768949e1648d500a7402c MD5 | raw file
 1/** 
 2 * @file llnullcipher.cpp
 3 * @brief Implementation of a cipher which does not encrypt.
 4 *
 5 * $LicenseInfo:firstyear=2003&license=viewerlgpl$
 6 * Second Life Viewer Source Code
 7 * Copyright (C) 2010, Linden Research, Inc.
 8 * 
 9 * This library is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU Lesser General Public
11 * License as published by the Free Software Foundation;
12 * version 2.1 of the License only.
13 * 
14 * This library is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
17 * Lesser General Public License for more details.
18 * 
19 * You should have received a copy of the GNU Lesser General Public
20 * License along with this library; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
22 * 
23 * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
24 * $/LicenseInfo$
25 */
26
27#include "linden_common.h"
28
29#include "llnullcipher.h"
30
31///----------------------------------------------------------------------------
32/// Class LLNullCipher
33///----------------------------------------------------------------------------
34
35U32  LLNullCipher::encrypt(const U8* src, U32 src_len, U8* dst, U32 dst_len)
36{
37	if((src_len == dst_len) && src && dst)
38	{
39		memmove(dst, src, src_len);
40		return src_len;
41	}
42	return 0;
43}
44
45U32 LLNullCipher::decrypt(const U8* src, U32 src_len, U8* dst, U32 dst_len)
46{
47	if((src_len == dst_len) && src && dst)
48	{
49		memmove(dst, src, src_len);
50		return src_len;
51	}
52	return 0;
53}
54
55U32 LLNullCipher::requiredEncryptionSpace(U32 len) const
56{
57	return len;
58}