Crypto

Created: 2016-09-06 13:17:36 -0700 Modified: 2016-09-06 13:18:29 -0700

Basics

§Section titled Basics

• Most of this page is about the Crypto library.
• Note that you don’t need to require Buffer in Node.

Symmetric cryptography

§Section titled Symmetric cryptography

(this is useful when you want to encrypt something and later be able to decrypt it with a single key)

const crypto = require(‘crypto’);

const password = ‘a password’;

const cipher = crypto.createCipher(‘aes192’, password);

var encrypted = cipher.update(‘some clear text data’, ‘utf8’, ‘hex’);

encrypted += cipher.final(‘hex’);

console.log(encrypted);

// Prints: ca981be48e90867604588e75d04feabb63cc007a8f8ad89b10616ed84d815504

const decipher = crypto.createDecipher(‘aes192’, password);

var decrypted = decipher.update(encrypted, ‘hex’, ‘utf8’);

decrypted += decipher.final(‘utf8’);

console.log(decrypted);

// Prints: some clear text data