(Node.js) Encode Integer to Hex or Base64 using N Bytes

Demonstrates how to write an integer to N bytes (little-endian or big-endian) and return the bytes in any encoding such as hex, base64, etc.

Note: This example requires Chilkat v9.5.0.77 or greater.

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

var os = require('os');
if (os.platform() == 'win32') {  
  var chilkat = require('@chilkat/ck-node23-win64'); 
} else if (os.platform() == 'linux') {
    if (os.arch() == 'arm') {
        var chilkat = require('@chilkat/ck-node23-linux-arm');
    } else if (os.arch() == 'arm64') {
        var chilkat = require('@chilkat/ck-node23-linux-arm64');
    } else {
        var chilkat = require('@chilkat/ck-node23-linux-x64');
    }
} else if (os.platform() == 'darwin') {
  var chilkat = require('@chilkat/ck-node23-mac-universal');
}

function chilkatExample() {

    var crypt = new chilkat.Crypt2();

    // 1193046 decimal is equal to 0x123456 hex.
    var value = 1193046;

    // Write the integer in 8 bytes using little-endian byte-order and return as hex
    var bLittleEndian = true;
    var s = crypt.EncodeInt(value,8,bLittleEndian,"hex");
    // The output is: 5634120000000000
    console.log(s);

    // Now use big-endian...
    bLittleEndian = false;
    s = crypt.EncodeInt(value,8,bLittleEndian,"hex");
    // The output is: 0000000000123456
    console.log(s);

    // Instead of hex, get the 8 bytes using base64.
    s = crypt.EncodeInt(value,8,bLittleEndian,"base64");
    // The output is: AAAAAAASNFY=
    console.log(s);

}

chilkatExample();