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/* Copyright (C) 2002-2005 RealVNC Ltd. All Rights Reserved.
* Copyright 2023 Pierre Ossman for Cendio AB
*
* This is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This software 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this software; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
* USA.
*/
//
// XXX not thread-safe, because d3des isn't - do we need to worry about this?
//
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <assert.h>
#include <string.h>
extern "C" {
#include <rfb/d3des.h>
}
#include <rdr/Exception.h>
#include <rfb/obfuscate.h>
static unsigned char d3desObfuscationKey[] = {23,82,107,6,35,78,88,7};
std::vector<uint8_t> rfb::obfuscate(const char *str)
{
std::vector<uint8_t> buf(8);
assert(str != nullptr);
size_t l = strlen(str), i;
for (i=0; i<8; i++)
buf[i] = i<l ? str[i] : 0;
deskey(d3desObfuscationKey, EN0);
des(buf.data(), buf.data());
return buf;
}
std::string rfb::deobfuscate(const uint8_t *data, size_t len)
{
char buf[9];
if (len != 8)
throw rdr::Exception("bad obfuscated password length");
assert(data != nullptr);
deskey(d3desObfuscationKey, DE1);
des((uint8_t*)data, (uint8_t*)buf);
buf[8] = 0;
return buf;
}
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