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60 lines
1.5 KiB
60 lines
1.5 KiB
<?php
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function encrypt($data, $key)
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{
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$encrypted = '';
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for ($i = 0; $i < strlen($data); $i++) {
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$encrypted .= $data[$i] ^ $key[$i % strlen($key)];
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}
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return base64_encode($encrypted);
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}
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function decrypt($data, $key)
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{
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$data = base64_decode($data);
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$decrypted = '';
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for ($i = 0; $i < strlen($data); $i++) {
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$decrypted .= $data[$i] ^ $key[$i % strlen($key)];
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}
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return $decrypted;
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}
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if ($_SERVER['REQUEST_METHOD'] === 'POST') {
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$data = $_POST['data'] ?? '';
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$key = $_POST['key'] ?? '';
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if (!empty($data) && !empty($key)) {
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if (isset($_POST['encrypt'])) {
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$encrypted_data = encrypt($data, $key);
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echo "加密後的資料：" . $encrypted_data . "<br>";
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} elseif (isset($_POST['decrypt'])) {
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$decrypted_data = decrypt($data, $key);
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echo "解密後的資料：" . $decrypted_data . "<br>";
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}
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} else {
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echo "請輸入資料和金鑰。";
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}
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}
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?>
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<!DOCTYPE html>
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<html>
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<head>
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<title>加密解密表單</title>
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</head>
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<body>
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<form method="post" action="">
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<label for="data">請輸入要加密或解密的資料：</label><br>
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<input type="text" id="data" name="data"><br><br>
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<label for="key">請輸入金鑰：</label><br>
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<input type="text" id="key" name="key" value="masada@<?php echo date("Y"); ?>"><br><br>
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<input type="submit" name="encrypt" value="加密資料">
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<input type="submit" name="decrypt" value="解密資料">
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</form>
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</body>
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</html>
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