(Node.js) Blowfish CFB Mode Encryption

Demonstrates how to encrypt using Blowfish CFB (Cipher Feedback) mode.

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

    var crypt = new chilkat.Crypt2();

    // Use "blowfish2" to produce correct results that match published blowfish test vectors.
    crypt.CryptAlgorithm = "blowfish2";
    crypt.CipherMode = "cfb";
    crypt.KeyLength = 256;

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

    // The block size of the blowfish algoirthm is 8 bytes, therefore the IV is 8 bytes.
    var ivHex = "0001020304050607";
    crypt.SetEncodedIV(ivHex,"hex");

    // The secret key must equal the size of the key.  For
    // 256-bit encryption, the binary secret key is 32 bytes.
    var keyHex = "603deb1015ca71be2b73aef0857d77811f352c073b6108d72d9810a30914dff4";
    crypt.SetEncodedKey(keyHex,"hex");

    // Encrypt a string...
    var encStr = crypt.EncryptStringENC("In all intellectual debates, both sides tend to be correct in what they affirm, and wrong in what they deny. -- John Stuart Mill");
    console.log(encStr);

    var decrypt = new chilkat.Crypt2();

    decrypt.CryptAlgorithm = "blowfish2";
    decrypt.CipherMode = "cfb";
    decrypt.KeyLength = 256;
    decrypt.EncodingMode = "hex";
    decrypt.SetEncodedIV(ivHex,"hex");
    decrypt.SetEncodedKey(keyHex,"hex");

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

}

chilkatExample();