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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