library/adodb/session/crypt.inc.php

   1 <?php
   2 //       Session Encryption by Ari Kuorikoski <ari.kuorikoski@finebyte.com>
   3 class MD5Crypt{
   4                 function keyED($txt,$encrypt_key)
   5                 {
   6                                 $encrypt_key = md5($encrypt_key);
   7                                 $ctr=0;
   8                                 $tmp = "";
   9                                 for ($i=0;$i<strlen($txt);$i++){
  10                                                 if ($ctr==strlen($encrypt_key)) $ctr=0;
  11                                                 $tmp.= substr($txt,$i,1) ^ substr($encrypt_key,$ctr,1);
  12                                                 $ctr++;
  13                                 }
  14                                 return $tmp;
  15                 }
  16
  17                 function Encrypt($txt,$key)
  18                 {
  19                                 srand((double)microtime()*1000000);
  20                                 $encrypt_key = md5(rand(0,32000));
  21                                 $ctr=0;
  22                                 $tmp = "";
  23                                 for ($i=0;$i<strlen($txt);$i++)
  24                                 {
  25                                 if ($ctr==strlen($encrypt_key)) $ctr=0;
  26                                 $tmp.= substr($encrypt_key,$ctr,1) .
  27                                 (substr($txt,$i,1) ^ substr($encrypt_key,$ctr,1));
  28                                 $ctr++;
  29                                 }
  30                                 return base64_encode($this->keyED($tmp,$key));
  31                 }
  32
  33                 function Decrypt($txt,$key)
  34                 {
  35                                 $txt = $this->keyED(base64_decode($txt),$key);
  36                                 $tmp = "";
  37                                 for ($i=0;$i<strlen($txt);$i++){
  38                                                 $md5 = substr($txt,$i,1);
  39                                                 $i++;
  40                                                 $tmp.= (substr($txt,$i,1) ^ $md5);
  41                                 }
  42                                 return $tmp;
  43                 }
  44
  45                 function RandPass()
  46                 {
  47                                 $randomPassword = "";
  48                                 srand((double)microtime()*1000000);
  49                                 for($i=0;$i<8;$i++)
  50                                 {
  51                                                 $randnumber = rand(48,120);
  52
  53                                                 while (($randnumber >= 58 && $randnumber <= 64) || ($randnumber >= 91 && $randnumber <= 96))
  54                                                 {
  55                                                                 $randnumber = rand(48,120);
  56                                                 }
  57
  58                                                 $randomPassword .= chr($randnumber);
  59                                 }
  60                                 return $randomPassword;
  61                 }
  62
  63 }
  64
  65
  66 class SHA1Crypt{
  67                 function keyED($txt,$encrypt_key)
  68                 {
  69
  70                                 $encrypt_key = sha1($encrypt_key);
  71                                 $ctr=0;
  72                                 $tmp = "";
  73
  74                                 for ($i=0;$i<strlen($txt);$i++){
  75                                                 if ($ctr==strlen($encrypt_key)) $ctr=0;
  76                                                 $tmp.= substr($txt,$i,1) ^ substr($encrypt_key,$ctr,1);
  77                                                 $ctr++;
  78                                 }
  79                                 return $tmp;
  80
  81                 }
  82
  83                 function Encrypt($txt,$key)
  84                 {
  85
  86                                 srand((double)microtime()*1000000);
  87                                 $encrypt_key = sha1(rand(0,32000));
  88                                 $ctr=0;
  89                                 $tmp = "";
  90
  91                                 for ($i=0;$i<strlen($txt);$i++)
  92
  93                                 {
  94
  95                                 if ($ctr==strlen($encrypt_key)) $ctr=0;
  96
  97                                 $tmp.= substr($encrypt_key,$ctr,1) .
  98
  99                                 (substr($txt,$i,1) ^ substr($encrypt_key,$ctr,1));
 100
 101                                 $ctr++;
 102
 103                                 }
 104
 105                                 return base64_encode($this->keyED($tmp,$key));
 106
 107                 }
 108
 109
 110
 111                 function Decrypt($txt,$key)
 112                 {
 113
 114                                 $txt = $this->keyED(base64_decode($txt),$key);
 115
 116                                 $tmp = "";
 117
 118                                 for ($i=0;$i<strlen($txt);$i++){
 119
 120                                                 $sha1 = substr($txt,$i,1);
 121
 122                                                 $i++;
 123
 124                                                 $tmp.= (substr($txt,$i,1) ^ $sha1);
 125
 126                                 }
 127
 128                                 return $tmp;
 129                 }
 130
 131
 132
 133                 function RandPass()
 134                 {
 135                                 $randomPassword = "";
 136                                 srand((double)microtime()*1000000);
 137
 138                                 for($i=0;$i<8;$i++)
 139                                 {
 140
 141                                                 $randnumber = rand(48,120);
 142
 143                                                 while (($randnumber >= 58 && $randnumber <= 64) || ($randnumber >= 91 && $randnumber <= 96))
 144                                                 {
 145                                                                 $randnumber = rand(48,120);
 146                                                 }
 147
 148                                                 $randomPassword .= chr($randnumber);
 149                                 }
 150
 151                                 return $randomPassword;
 152
 153                 }
 154
 155
 156
 157 }
 158 ?>