Diff: services/mysql/mycrypt.c

Revision:

12:8dc6b255af6c

Parent:

11:da4498f591ee

--- a/services/mysql/mycrypt.c	Thu Aug 05 15:01:33 2010 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,131 +0,0 @@
-/* Copyright (C) 2007 MySQL AB & Michael Widenius
-
-   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 */
-
-#define SCRAMBLE_LENGTH_323 8
-
-#include <string.h>
-#include <math.h>
-
-typedef unsigned int uint;
-typedef unsigned long ulong;
-typedef unsigned char uchar;
-
-struct my_rnd_struct {
-  unsigned long seed1,seed2,max_value;
-  double max_value_dbl;
-};
-
-static void my_rnd_init(struct my_rnd_struct *rand_st, ulong seed1, ulong seed2);
-static double my_rnd(struct my_rnd_struct *rand_st);
-static void hash_password(ulong *result, const char *password, uint password_len);
-
-/*
-  Initialize random generator
-
-  NOTES
-    MySQL's password checks depends on this, so don't do any changes
-    that changes the random numbers that are generated!
-*/
-
-static void my_rnd_init(struct my_rnd_struct *rand_st, ulong seed1, ulong seed2)
-{
-  rand_st->max_value= 0x3FFFFFFFL;
-  rand_st->max_value_dbl=(double) rand_st->max_value;
-  rand_st->seed1=seed1%rand_st->max_value ;
-  rand_st->seed2=seed2%rand_st->max_value;
-}
-
-/*
-  Generate random number.
-
-  SYNOPSIS
-    my_rnd()
-    rand_st    INOUT  Structure used for number generation
-    
-  RETURN VALUE
-    generated pseudo random number
-*/
-
-static double my_rnd(struct my_rnd_struct *rand_st)
-{
-  rand_st->seed1=(rand_st->seed1*3+rand_st->seed2) % rand_st->max_value;
-  rand_st->seed2=(rand_st->seed1+rand_st->seed2+33) % rand_st->max_value;
-  return (((double) rand_st->seed1)/rand_st->max_value_dbl);
-}
-
-/*
-    Generate binary hash from raw text string 
-    Used for Pre-4.1 password handling
-  SYNOPSIS
-    hash_password()
-    result       OUT store hash in this location
-    password     IN  plain text password to build hash
-    password_len IN  password length (password may be not null-terminated)
-*/
-
-static void hash_password(ulong *result, const char *password, uint password_len)
-{
-  register ulong nr=1345345333L, add=7, nr2=0x12345671L;
-  ulong tmp;
-  const char *password_end= password + password_len;
-  for (; password < password_end; password++)
-  {
-    if (*password == ' ' || *password == '\t')
-      continue;                                 /* skip space in password */
-    tmp= (ulong) (uchar) *password;
-    nr^= (((nr & 63)+add)*tmp)+ (nr << 8);
-    nr2+=(nr2 << 8) ^ nr;
-    add+=tmp;
-  }
-  result[0]=nr & (((ulong) 1L << 31) -1L); /* Don't use sign bit (str2int) */;
-  result[1]=nr2 & (((ulong) 1L << 31) -1L);
-}
-
-
-
-/*
-    Scramble string with password.
-    Used in pre 4.1 authentication phase.
-  SYNOPSIS
-    scramble_323()
-    to       OUT Store scrambled message here. Buffer must be at least
-                 SCRAMBLE_LENGTH_323+1 bytes long
-    message  IN  Message to scramble. Message must be at least
-                 SRAMBLE_LENGTH_323 bytes long.
-    password IN  Password to use while scrambling
-*/
-
-void scramble_323(char *to, const char *message, const char *password)
-{
-  struct my_rnd_struct rand_st;
-  ulong hash_pass[2], hash_message[2];
-
-  if (password && password[0])
-  {
-    char extra, *to_start=to;
-    const char *message_end= message + SCRAMBLE_LENGTH_323;
-    hash_password(hash_pass,password, (uint) strlen(password));
-    hash_password(hash_message, message, SCRAMBLE_LENGTH_323);
-    my_rnd_init(&rand_st,hash_pass[0] ^ hash_message[0],
-               hash_pass[1] ^ hash_message[1]);
-    for (; message < message_end; message++)
-      *to++= (char) (floor(my_rnd(&rand_st)*31)+64);
-    extra=(char) (floor(my_rnd(&rand_st)*31));
-    while (to_start != to)
-      *(to_start++)^=extra;
-  }
-  *to= 0;
-}
-