[2] | 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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