mirror of
https://github.com/MariaDB/server.git
synced 2025-01-21 22:34:18 +01:00
29f0dcb563
* Finished Monty and Jani's merge * Some InnoDB tests still fail (because it's old xtradb code run against newer testsuite). They are expected to go after mergning with the latest xtradb.
81 lines
2.1 KiB
C++
81 lines
2.1 KiB
C++
/* Copyright (C) 2000-2001, 2003, 2005 MySQL AB
|
|
|
|
This program 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; version 2 of the License.
|
|
|
|
This program 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 program; if not, write to the Free Software
|
|
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
|
|
|
|
|
|
|
|
/*
|
|
Functions to handle the encode() and decode() functions
|
|
The strongness of this crypt is large based on how good the random
|
|
generator is. It should be ok for short strings, but for communication one
|
|
needs something like 'ssh'.
|
|
*/
|
|
|
|
#ifdef USE_PRAGMA_IMPLEMENTATION
|
|
#pragma implementation // gcc: Class implementation
|
|
#endif
|
|
|
|
#include "mysql_priv.h"
|
|
|
|
SQL_CRYPT::SQL_CRYPT(const char *password, uint length)
|
|
{
|
|
ulong rand_nr[2];
|
|
hash_password(rand_nr,password, length);
|
|
crypt_init(rand_nr);
|
|
}
|
|
|
|
void SQL_CRYPT::crypt_init(ulong *rand_nr)
|
|
{
|
|
uint i;
|
|
my_rnd_init(&rand,rand_nr[0],rand_nr[1]);
|
|
|
|
for (i=0 ; i<=255; i++)
|
|
decode_buff[i]= (char) i;
|
|
|
|
for (i=0 ; i<= 255 ; i++)
|
|
{
|
|
int idx= (uint) (my_rnd(&rand)*255.0);
|
|
char a= decode_buff[idx];
|
|
decode_buff[idx]= decode_buff[i];
|
|
decode_buff[+i]=a;
|
|
}
|
|
for (i=0 ; i <= 255 ; i++)
|
|
encode_buff[(uchar) decode_buff[i]]=i;
|
|
org_rand=rand;
|
|
shift=0;
|
|
}
|
|
|
|
|
|
void SQL_CRYPT::encode(char *str,uint length)
|
|
{
|
|
for (uint i=0; i < length; i++)
|
|
{
|
|
shift^=(uint) (my_rnd(&rand)*255.0);
|
|
uint idx= (uint) (uchar) str[0];
|
|
*str++ = (char) ((uchar) encode_buff[idx] ^ shift);
|
|
shift^= idx;
|
|
}
|
|
}
|
|
|
|
|
|
void SQL_CRYPT::decode(char *str,uint length)
|
|
{
|
|
for (uint i=0; i < length; i++)
|
|
{
|
|
shift^=(uint) (my_rnd(&rand)*255.0);
|
|
uint idx= (uint) ((uchar) str[0] ^ shift);
|
|
*str = decode_buff[idx];
|
|
shift^= (uint) (uchar) *str++;
|
|
}
|
|
}
|