des.js

DES Encryption

This code sample demonstrates how to encrypt a message using DES in ECB mode. The 'des.js' package provides the DES class which can be used to create an encryption object with a specified key.

const DES = require('des.js');
const crypto = require('crypto');

const key = new Buffer('0123456789abcd0123456789', 'hex');
const desEcb = new DES.DES({ type: 'encrypt', key: key });

const message = 'secret message';
const msgBuffer = new Buffer(message);

const encrypted = desEcb.update(msgBuffer).concat(desEcb.final());
console.log(encrypted.toString('hex'));

DES Decryption

This code sample demonstrates how to decrypt a message that was previously encrypted using DES in ECB mode. The 'des.js' package provides the DES class which can be used to create a decryption object with a specified key.

const DES = require('des.js');
const crypto = require('crypto');

const key = new Buffer('0123456789abcd0123456789', 'hex');
const desEcb = new DES.DES({ type: 'decrypt', key: key });

const encryptedMessage = 'e5c9b9e91b1b5fc5600f1ec6b64b2c57';
const encryptedBuffer = new Buffer(encryptedMessage, 'hex');

const decrypted = desEcb.update(encryptedBuffer).concat(desEcb.final());
console.log(decrypted.toString('utf8'));

3DES Encryption

This code sample demonstrates how to encrypt a message using Triple DES (3DES) in EDE mode. The 'des.js' package provides the DESede class which can be used to create an encryption object with a specified key for 3DES encryption.

const DES = require('des.js');
const crypto = require('crypto');

const key = new Buffer('0123456789abcdef0123456789abcdef0123456789abcdef', 'hex');
const desEde = new DES.DESede({ type: 'encrypt', key: key });

const message = 'secret message';
const msgBuffer = new Buffer(message);

const encrypted = desEde.update(msgBuffer).concat(desEde.final());
console.log(encrypted.toString('hex'));

3DES Decryption

This code sample demonstrates how to decrypt a message that was previously encrypted using Triple DES (3DES) in EDE mode. The 'des.js' package provides the DESede class which can be used to create a decryption object with a specified key for 3DES decryption.

const DES = require('des.js');
const crypto = require('crypto');

const key = new Buffer('0123456789abcdef0123456789abcdef0123456789abcdef', 'hex');
const desEde = new DES.DESede({ type: 'decrypt', key: key });

const encryptedMessage = 'a1b2c3d4e5f67890a1b2c3d4e5f67890';
const encryptedBuffer = new Buffer(encryptedMessage, 'hex');

const decrypted = desEde.update(encryptedBuffer).concat(desEde.final());
console.log(decrypted.toString('utf8'));