如何在 Node.js 中解密 Triple DES

Question

这段代码对我来说很有效，但我该如何反转它？

我已经在数据库中散列了密码，我需要解密。我有一个密钥和一个散列。

const crypto = require('crypto');
const md5 = text => {
  return crypto
    .createHash('md5')
    .update(text)
    .digest();
}

const encrypt = (text, secretKey) => {
  secretKey = md5(secretKey);
  console.log(secretKey.toString('base64'));
  secretKey = Buffer.concat([secretKey, secretKey.slice(0, 8)]); // properly expand 3DES key from 128 bit to 192 bit

  const cipher = crypto.createCipheriv('des-ede3', secretKey, '');
  const encrypted = cipher.update(text, 'utf8', 'base64');

  return encrypted + cipher.final('base64');
};
const encrypted = encrypt('testtext', 'testkey');

console.log(encrypted);

Answer 1

这段代码应该可以满足您的需要。我们将创建一个使用相同算法（显然是密钥！）解密的解密函数：

const crypto = require('crypto');
const md5 = text => {
return crypto
    .createHash('md5')
    .update(text)
    .digest();
}

const encrypt = (text, secretKey) => {
    secretKey = md5(secretKey);
    console.log(secretKey.toString('base64'));
    secretKey = Buffer.concat([secretKey, secretKey.slice(0, 8)]); // properly expand 3DES key from 128 bit to 192 bit

    const cipher = crypto.createCipheriv('des-ede3', secretKey, '');
    const encrypted = cipher.update(text, 'utf8', 'base64');

    return encrypted + cipher.final('base64');
};

const decrypt = (encryptedBase64, secretKey) => {
    secretKey = md5(secretKey);
    secretKey = Buffer.concat([secretKey, secretKey.slice(0, 8)]); // properly expand 3DES key from 128 bit to 192 bit
    const decipher = crypto.createDecipheriv('des-ede3', secretKey, '');
    let decrypted = decipher.update(encryptedBase64, 'base64');
    decrypted += decipher.final();
    return decrypted;
};


const encrypted = encrypt('testtext', 'testkey');
console.log("Decrypted text:", decrypt(encrypted, 'testkey'));

如何在 Node.js 中解密 Triple DES

How to decrypt Triple DES in Node.js

encryption

node.js

node-crypto