(Node.js) 2-Key Triple DES (112 bits)

Demonstrates 2-Key Triple DES encryption (112-bit 3DES encryption).

Install Chilkat for Node.js and Electron using npm at Chilkat npm packages for Node.js Chilkat npm packages for Electron on Windows, Linux, MacOSX, and ARM

var os = require('os');
if (os.platform() == 'win32') {  
    if (os.arch() == 'ia32') {
        var chilkat = require('@chilkat/ck-node21-win-ia32');
    } else {
        var chilkat = require('@chilkat/ck-node21-win64'); 
    }
} else if (os.platform() == 'linux') {
    if (os.arch() == 'arm') {
        var chilkat = require('@chilkat/ck-node21-arm');
    } else if (os.arch() == 'x86') {
        var chilkat = require('@chilkat/ck-node21-linux32');
    } else {
        var chilkat = require('@chilkat/ck-node21-linux64');
    }
} else if (os.platform() == 'darwin') {
    if (os.arch() == 'arm64') {
        var chilkat = require('@chilkat/ck-node21-mac-m1');
    } else {
        var chilkat = require('@chilkat/ck-node21-macosx');
    }
}

function chilkatExample() {

    // This example requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    var crypt = new chilkat.Crypt2();

    // Specify 3DES for the encryption algorithm:
    crypt.CryptAlgorithm = "3des";

    crypt.CipherMode = "ecb";

    // For 2-Key Triple-DES, use a key length of 128
    // (Given that each byte's msb is a parity bit, the strength is really 112 bits).
    crypt.KeyLength = 128;

    // Pad with zeros
    crypt.PaddingScheme = 3;

    // EncodingMode specifies the encoding of the output for
    // encryption, and the input for decryption.
    // It may be "hex", "url", "base64", or "quoted-printable".
    crypt.EncodingMode = "hex";

    // Let's create a secret key by using the MD5 hash of a password.
    // The Digest-MD5 algorithm produces a 16-byte hash (i.e. 128 bits)
    crypt.HashAlgorithm = "md5";
    var keyHex = crypt.HashStringENC("secretPassword");

    // Set the encryption key:
    crypt.SetEncodedKey(keyHex,"hex");

    // Encrypt
    var encStr = crypt.EncryptStringENC("The quick brown fox jumped over the lazy dog");
    console.log(encStr);

    // Now decrypt:
    var decStr = crypt.DecryptStringENC(encStr);
    console.log(decStr);

}

chilkatExample();