(Node.js) Encrypt / Decrypt Secure Strings

Demonstrates how to use the EncryptSecureENC and DecryptSecureENC methods to encrypt/decrypt secure strings. These methods were added in Chilkat v9.5.0.71 (released January 2018).

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 Crypt API to have been previously unlocked.
    // See Unlock Chilkat Crypt for sample code.

    // Load the secure string with some text.
    var secStr1 = new chilkat.SecureString();
    var success = secStr1.LoadFile("qa_data/txt/helloWorld.txt","utf-8");
    if (success !== true) {
        console.log("Failed to load helloWorld.txt");
        return;
    }

    var crypt = new chilkat.Crypt2();

    crypt.CryptAlgorithm = "aes";
    crypt.CipherMode = "cbc";
    crypt.KeyLength = 128;
    crypt.SetEncodedKey("000102030405060708090A0B0C0D0E0F","hex");
    crypt.SetEncodedIV("000102030405060708090A0B0C0D0E0F","hex");
    crypt.EncodingMode = "base64";

    // Return the base64 encoded encrypted contents of secStr1.
    var encryptedStr = crypt.EncryptSecureENC(secStr1);
    console.log("Encrypted string: " + encryptedStr);

    // Output:
    // Encrypted string: qiq+IFhcjTkEIkZyf31V/g==

    // Decrypt to secStr2:
    var secStr2 = new chilkat.SecureString();
    crypt.DecryptSecureENC(encryptedStr,secStr2);

    // Access the contents of secStr2
    console.log("Decrypted string: " + secStr2.Access());

    // Output:
    // Decrypted string: Hello World!

}

chilkatExample();