encrypt node.js code example

Example 1: nodejs encrypt text with key

const crypto = require('crypto');

const algorithm = 'aes-256-ctr';
const secretKey = 'vOVH6sdmpNWjRRIqCc7rdxs01lwHzfr3';
const iv = crypto.randomBytes(16);

const encrypt = (text) => {

    const cipher = crypto.createCipheriv(algorithm, secretKey, iv);

    const encrypted = Buffer.concat([cipher.update(text), cipher.final()]);

    return {
        iv: iv.toString('hex'),
        content: encrypted.toString('hex')
    };
};

const decrypt = (hash) => {

    const decipher = crypto.createDecipheriv(algorithm, secretKey, Buffer.from(hash.iv, 'hex'));

    const decrpyted = Buffer.concat([decipher.update(Buffer.from(hash.content, 'hex')), decipher.final()]);

    return decrpyted.toString();
};

module.exports = {
    encrypt,
    decrypt
};

Example 2: encrypt and decrypt in nodejs

const Cryptr = require('cryptr');const cryptr = new Cryptr('myTotalySecretKey'); const encryptedString = cryptr.encrypt('bacon');const decryptedString = cryptr.decrypt(encryptedString); console.log(encryptedString); // e7b75a472b65bc4a42e7b3f78833a4d00040beba796062bf7c13d9533b149e5ec3784813dc20348fdf248d28a2982df85b83d1109623bce45f08238f6ea9bd9bb5f406427b2a40f969802635b8907a0a57944f2c12f334bd081d5143a357c173a611e1b64aconsole.log(decryptedString); // bacon