[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 $randomPassword; |
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| 61 | } |
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| 62 | |
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| 63 | } |
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[34] | 64 | |
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| 65 | |
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| 66 | class SHA1Crypt{ |
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| 67 | |
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| 68 | function keyED($txt,$encrypt_key) |
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| 69 | { |
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| 70 | |
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| 71 | $encrypt_key = sha1($encrypt_key); |
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| 72 | $ctr=0; |
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| 73 | $tmp = ""; |
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| 74 | |
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| 75 | for ($i=0;$i<strlen($txt);$i++){ |
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| 76 | if ($ctr==strlen($encrypt_key)) $ctr=0; |
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| 77 | $tmp.= substr($txt,$i,1) ^ substr($encrypt_key,$ctr,1); |
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| 78 | $ctr++; |
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| 79 | } |
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| 80 | return $tmp; |
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| 81 | |
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| 82 | } |
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| 83 | |
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| 84 | |
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| 85 | |
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| 86 | function Encrypt($txt,$key) |
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| 87 | { |
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| 88 | |
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| 89 | srand((double)microtime()*1000000); |
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| 90 | $encrypt_key = sha1(rand(0,32000)); |
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| 91 | $ctr=0; |
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| 92 | $tmp = ""; |
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| 93 | |
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| 94 | for ($i=0;$i<strlen($txt);$i++) |
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| 95 | |
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| 96 | { |
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| 97 | |
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| 98 | if ($ctr==strlen($encrypt_key)) $ctr=0; |
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| 99 | |
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| 100 | $tmp.= substr($encrypt_key,$ctr,1) . |
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| 101 | |
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| 102 | (substr($txt,$i,1) ^ substr($encrypt_key,$ctr,1)); |
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| 103 | |
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| 104 | $ctr++; |
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| 105 | |
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| 106 | } |
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| 107 | |
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| 108 | return base64_encode($this->keyED($tmp,$key)); |
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| 109 | |
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| 110 | } |
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| 111 | |
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| 112 | |
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| 113 | |
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| 114 | function Decrypt($txt,$key) |
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| 115 | { |
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| 116 | |
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| 117 | $txt = $this->keyED(base64_decode($txt),$key); |
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| 118 | |
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| 119 | $tmp = ""; |
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| 120 | |
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| 121 | for ($i=0;$i<strlen($txt);$i++){ |
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| 122 | |
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| 123 | $sha1 = substr($txt,$i,1); |
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| 124 | |
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| 125 | $i++; |
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| 126 | |
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| 127 | $tmp.= (substr($txt,$i,1) ^ $sha1); |
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| 128 | |
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| 129 | } |
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| 130 | |
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| 131 | return $tmp; |
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| 132 | } |
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| 133 | |
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| 134 | |
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| 135 | |
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| 136 | function RandPass() |
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| 137 | { |
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| 138 | $randomPassword = ""; |
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| 139 | srand((double)microtime()*1000000); |
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| 140 | |
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| 141 | for($i=0;$i<8;$i++) |
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| 142 | { |
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| 143 | |
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| 144 | $randnumber = rand(48,120); |
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| 145 | |
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| 146 | while (($randnumber >= 58 && $randnumber <= 64) || ($randnumber >= 91 && $randnumber <= 96)) |
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| 147 | { |
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| 148 | $randnumber = rand(48,120); |
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| 149 | } |
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| 150 | |
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| 151 | $randomPassword .= chr($randnumber); |
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| 152 | } |
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| 153 | |
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| 154 | return $randomPassword; |
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| 155 | |
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| 156 | } |
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| 157 | |
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| 158 | |
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| 159 | |
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| 160 | } |
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[2] | 161 | ?> |
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