Test Case: javascript-instruct-755

  1import crypto from 'node:crypto';  2import tls from 'node:tls';  3import { URL } from 'node:url';  4​  5/**  6 * Generates a unique identifier using a specified algorithm.  7 * @param {string} algorithm - The algorithm to use for generating the identifier (e.g., 'sha256', 'md5').  8 * @param {string} data - The data to hash.  9 * @returns {string} - The generated unique identifier. 10 */ 11function generateUniqueId(algorithm, data) { 12  const hash = crypto.createHash(algorithm); 13  hash.update(data); 14  return hash.digest('hex'); 15} 16​ 17/** 18 * Encrypts a message using AES-256-GCM. 19 * @param {string} message - The message to encrypt. 20 * @param {string} key - The encryption key. 21 * @param {string} iv - The initialization vector. 22 * @returns {string} - The encrypted message (ciphertext). 23 */ 24function encryptMessage(message, key, iv) { 25  const cipher = crypto.createCipheriv('aes-256-gcm', Buffer.from(key, 'hex'), Buffer.from(iv, 'hex')); 26  let encrypted = cipher.update(message); 27  encrypted = Buffer.concat([encrypted, cipher.final()]); 28  const authTag = cipher.getAuthTag(); 29  return Buffer.concat([Buffer.from(iv, 'hex'), authTag, encrypted]).toString('hex'); 30} 31​ 32/** 33 * Sends an encrypted message over a TLS network connection. 34 * @param {string} message - The message to send. 35 * @param {string} destinationUrl - The URL of the destination server (e.g., 'tls://example.com:443'). 36 * @param {string} encryptionKey - The encryption key. 37 * @returns {Promise<void>} - A promise that resolves when the message is sent successfully. 38 */ 39async function sendEncryptedMessage(message, destinationUrl, encryptionKey) { 40  try { 41    const parsedUrl = new URL(destinationUrl); 42    const hostname = parsedUrl.hostname; 43    const port = parseInt(parsedUrl.port, 10) || 443; 44    const protocol = parsedUrl.protocol; 45​ 46    if (protocol !== 'tls:') { 47      throw new Error('Only TLS protocol is supported.'); 48    } 49​ 50    const iv = crypto.randomBytes(16).toString('hex'); 51    const encryptedMessage = encryptMessage(message, encryptionKey, iv); 52​ 53    return new Promise((resolve, reject) => { 54      const socket = tls.connect({ host: hostname, port: port, rejectUnauthorized: false }, () => { 55        socket.write(encryptedMessage + '\n', () => { 56          socket.end(); 57          resolve(); 58        }); 59      }); 60​ 61      socket.on('error', (err) => { 62        reject(err); 63      }); 64    }); 65  } catch (error) { 66    console.error('Error sending encrypted message:', error); 67    throw error; 68  } 69} 70​ 71/** 72 * Generates a unique identifier, encrypts a message, and sends it over a network connection. 73 * @param {string} message - The message to send. 74 * @param {string} destinationUrl - The URL of the destination server (e.g., 'tls://example.com:443'). 75 * @returns {Promise<void>} - A promise that resolves when the message is sent successfully. 76 */ 77async function processAndSendMessage(message, destinationUrl) { 78  const algorithm = 'sha256'; 79  const uniqueId = generateUniqueId(algorithm, message); 80  const encryptionKey = crypto.randomBytes(32).toString('hex'); // Generate a random 256-bit key 81​ 82  try { 83    await sendEncryptedMessage(message, destinationUrl, encryptionKey); 84    console.log('Message sent successfully with unique ID:', uniqueId); 85  } catch (error) { 86    console.error('Failed to send message:', error); 87    throw error; 88  } 89} 90​ 91export { processAndSendMessage, generateUniqueId, encryptMessage, sendEncryptedMessage };

None