forked from extern/egroupware
64 lines
1.4 KiB
PHP
64 lines
1.4 KiB
PHP
<?php
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// Session Encryption by Ari Kuorikoski <ari.kuorikoski@finebyte.com>
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class MD5Crypt{
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function keyED($txt,$encrypt_key)
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{
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$encrypt_key = md5($encrypt_key);
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$ctr=0;
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$tmp = "";
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for ($i=0;$i<strlen($txt);$i++){
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if ($ctr==strlen($encrypt_key)) $ctr=0;
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$tmp.= substr($txt,$i,1) ^ substr($encrypt_key,$ctr,1);
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$ctr++;
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}
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return $tmp;
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}
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function Encrypt($txt,$key)
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{
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srand((double)microtime()*1000000);
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$encrypt_key = md5(rand(0,32000));
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$ctr=0;
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$tmp = "";
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for ($i=0;$i<strlen($txt);$i++)
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{
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if ($ctr==strlen($encrypt_key)) $ctr=0;
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$tmp.= substr($encrypt_key,$ctr,1) .
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(substr($txt,$i,1) ^ substr($encrypt_key,$ctr,1));
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$ctr++;
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}
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return base64_encode($this->keyED($tmp,$key));
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}
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function Decrypt($txt,$key)
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{
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$txt = $this->keyED(base64_decode($txt),$key);
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$tmp = "";
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for ($i=0;$i<strlen($txt);$i++){
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$md5 = substr($txt,$i,1);
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$i++;
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$tmp.= (substr($txt,$i,1) ^ $md5);
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}
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return $tmp;
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}
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function RandPass()
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{
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$randomPassword = "";
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srand((double)microtime()*1000000);
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for($i=0;$i<8;$i++)
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{
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$randnumber = rand(48,120);
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while (($randnumber >= 58 && $randnumber <= 64) || ($randnumber >= 91 && $randnumber <= 96))
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{
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$randnumber = rand(48,120);
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}
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$randomPassword .= chr($randnumber);
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}
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return $randomPassword;
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}
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}
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?>
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