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/* Copyright (C) 2002-2003 RealVNC Ltd. All Rights Reserved.
*
* 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.
*/
//
// vncAuth
//
// XXX not thread-safe, because d3des isn't - do we need to worry about this?
//
#include <string.h>
extern "C" {
#include <rfb/d3des.h>
}
#include <rfb/vncAuth.h>
using namespace rfb;
void rfb::vncAuthEncryptChallenge(rdr::U8* challenge, const char* passwd)
{
unsigned char key[8] = { 0, };
int len = strlen(passwd);
if (len > 8) len = 8;
for (int i = 0; i < len; i++)
key[i] = passwd[i];
deskey(key, EN0);
for (int j = 0; j < vncAuthChallengeSize; j += 8)
des(challenge+j, challenge+j);
}
static unsigned char obfuscationKey[] = {23,82,107,6,35,78,88,7};
void rfb::vncAuthObfuscatePasswd(char* passwd)
{
for (int i = strlen(passwd); i < 8; i++)
passwd[i] = 0;
deskey(obfuscationKey, EN0);
des((unsigned char*)passwd, (unsigned char*)passwd);
}
void rfb::vncAuthUnobfuscatePasswd(char* passwd)
{
deskey(obfuscationKey, DE1);
des((unsigned char*)passwd, (unsigned char*)passwd);
passwd[8] = 0;
}
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