eserozvataf /
scabbia2-helpers
| @@ 105-116 (lines=12) @@ | ||
| 102 | * |
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| 103 | * @return string ciphertext |
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| 104 | */ |
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| 105 | public static function encrypt($uString, $uKey) |
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| 106 | { |
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| 107 | $tResult = ""; |
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| 108 | ||
| 109 | for ($i = 1, $tCount = strlen($uString); $i <= $tCount; $i++) { |
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| 110 | $tChar = substr($uString, $i - 1, 1); |
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| 111 | $tKeyChar = substr($uKey, ($i % strlen($uKey)) - 1, 1); |
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| 112 | $tResult .= chr(ord($tChar) + ord($tKeyChar)); |
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| 113 | } |
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| 114 | ||
| 115 | return $tResult; |
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| 116 | } |
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| 117 | ||
| 118 | /** |
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| 119 | * Decrypts the ciphertext with the given key |
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| @@ 126-137 (lines=12) @@ | ||
| 123 | * |
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| 124 | * @return string plaintext |
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| 125 | */ |
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| 126 | public static function decrypt($uString, $uKey) |
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| 127 | { |
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| 128 | $tResult = ""; |
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| 129 | ||
| 130 | for ($i = 1, $tCount = strlen($uString); $i <= $tCount; $i++) { |
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| 131 | $tChar = substr($uString, $i - 1, 1); |
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| 132 | $tKeyChar = substr($uKey, ($i % strlen($uKey)) - 1, 1); |
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| 133 | $tResult .= chr(ord($tChar) - ord($tKeyChar)); |
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| 134 | } |
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| 135 | ||
| 136 | return $tResult; |
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| 137 | } |
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| 138 | ||
| 139 | /** |
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| 140 | * Reads from a file |
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