console 命令行工具 X clear

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// 基于异或（XOR）运算的加密函数
function encrypt(text, key) {
  let encryptedText = '';
  for (let i = 0, j = 0; i < text.length; i++, j++) {
    if (j >= key.length) j = 0;
    encryptedText += String.fromCharCode(text.charCodeAt(i) ^ key.charCodeAt(j));
  }
  return encryptedText;
}

// 基于异或（XOR）运算的解密函数
function decrypt(text, key) {
  return encrypt(text, key);
}

// 辅助函数，用于下载生成的文件
function downloadFile(content, fileName, fileType) {
  const blob = new Blob([content], { type: fileType });
  const a = document.createElement('a');
  a.href = URL.createObjectURL(blob);
  a.download = fileName;
  a.click();
  URL.revokeObjectURL(a.href);
}

const fileInput = document.getElementById('fileInput');
const keyInput = document.getElementById('keyInput');
const resultMessage = document.getElementById('resultMessage');
const encryptButton = document.getElementById('encryptButton');
const decryptButton = document.getElementById('decryptButton');

encryptButton.addEventListener('click', async () => {
  const key = keyInput.value;
  if (key === '') {
    alert('请输入自定义密钥');
    return;
  }
  const file = fileInput.files[0];
  if (file) {
    const text = await file.text();
    const encryptedText = encrypt(text, key);
    const newFileName = file.name + '.encrypted';
    downloadFile(encryptedText, newFileName, 'text/plain');
    resultMessage.textContent = `加密成功，已生成 ${newFileName}`;
  } else {
    alert('请选择要加密的文件');
  }
});

decryptButton.addEventListener('click', async () => {
  const key = keyInput.value;
  if (key === '') {
    alert('请输入自定义密钥');
    return;
  }
  const file = fileInput.files[0];
  if (file) {
    const text = await file.text();
    const decryptedText = decrypt(text, key);
    const newFileName = file.name.replace('.encrypted', '');
    downloadFile(decryptedText, newFileName, 'text/plain');
    resultMessage.textContent = `解密成功，已生成 ${newFileName}`;
  } else {
    alert('请选择要解密的文件');
  }
});

<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF - 8">
  <title>文件加解密工具</title>
  <link rel="stylesheet" href="styles.css">
</head>

<body>
  <h1>文件加解密工具</h1>
  <input type="file" id="fileInput">
  <input type="text" id="keyInput" placeholder="输入自定义密钥">
  <button id="encryptButton">加密</button>
  <button id="decryptButton">解密</button>
  <div id="resultMessage"></div>
  <script src="script.js"></script>
</body>

</html>

body {
  font - family: Arial, sans - serif;
  padding: 20px;
}

input[type="file"],
input[type="text"] {
  margin - bottom: 10px;
  width: 100%;
  padding: 5px;
}

button {
  padding: 10px 20px;
  background - color: #007BFF;
  color: white;
  border: none;
  cursor: pointer;
  margin - right: 10px;
}

#resultMessage {
  margin - top: 10px;
  color: green;
}