| 1 | <?php
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| 2 | // Session Encryption by Ari Kuorikoski <ari.kuorikoski@finebyte.com>
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| 3 | class MD5Crypt{
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| 4 | function keyED($txt,$encrypt_key)
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| 5 | {
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| 6 | $encrypt_key = md5($encrypt_key);
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| 7 | $ctr=0;
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| 8 | $tmp = "";
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| 9 | for ($i=0;$i<strlen($txt);$i++){
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| 10 | if ($ctr==strlen($encrypt_key)) $ctr=0;
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| 11 | $tmp.= substr($txt,$i,1) ^ substr($encrypt_key,$ctr,1);
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| 12 | $ctr++;
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| 13 | }
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| 14 | return $tmp;
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| 15 | }
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| 16 |
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| 17 | function Encrypt($txt,$key)
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| 18 | {
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| 19 | srand((double)microtime()*1000000);
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| 20 | $encrypt_key = md5(rand(0,32000));
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| 21 | $ctr=0;
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| 22 | $tmp = "";
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| 23 | for ($i=0;$i<strlen($txt);$i++)
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| 24 | {
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| 25 | if ($ctr==strlen($encrypt_key)) $ctr=0;
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| 26 | $tmp.= substr($encrypt_key,$ctr,1) .
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| 27 | (substr($txt,$i,1) ^ substr($encrypt_key,$ctr,1));
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| 28 | $ctr++;
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| 29 | }
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| 30 | return base64_encode($this->keyED($tmp,$key));
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| 31 | }
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| 32 |
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| 33 | function Decrypt($txt,$key)
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| 34 | {
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| 35 | $txt = $this->keyED(base64_decode($txt),$key);
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| 36 | $tmp = "";
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| 37 | for ($i=0;$i<strlen($txt);$i++){
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| 38 | $md5 = substr($txt,$i,1);
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| 39 | $i++;
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| 40 | $tmp.= (substr($txt,$i,1) ^ $md5);
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| 41 | }
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| 42 | return $tmp;
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| 43 | }
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| 44 |
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| 45 | function RandPass()
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| 46 | {
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| 47 | $randomPassword = "";
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| 48 | srand((double)microtime()*1000000);
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| 49 | for($i=0;$i<8;$i++)
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| 50 | {
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| 51 | $randnumber = rand(48,120);
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| 52 |
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| 53 | while (($randnumber >= 58 && $randnumber <= 64) || ($randnumber >= 91 && $randnumber <= 96))
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| 54 | {
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| 55 | $randnumber = rand(48,120);
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| 56 | }
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| 57 |
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| 58 | $randomPassword .= chr($randnumber);
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| 59 | }
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| 60 | return $randomPassword;
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| 61 | }
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| 62 |
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| 63 | }
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| 64 | ?> |
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