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@vlucas
vlucas / encryption.ts
Last active March 24, 2025 13:09
Stronger Encryption and Decryption in Node.js
import { createCipheriv, createDecipheriv, randomBytes } from "crypto";
const ENCRYPTION_KEY: string = process.env.ENCRYPTION_KEY || ""; // Must be 256 bits (32 characters)
const IV_LENGTH: number = 16; // For AES, this is always 16
/**
* Will generate valid encryption keys for use
* Not used in the code below, but generate one and store it in ENV for your own purposes
*/
export function keyGen() {
@AndreUltrasi
AndreUltrasi / passwordCracker.py
Last active August 18, 2024 04:48
Password Cracker in Python
references = {}
dictionary = []
def randomized(x, y):
from random import randint
return randint(x, y)
def cracker_per_digit(x):
@ccnokes
ccnokes / store.js
Created September 17, 2016 21:49
Example "store" for user data in an Electron app
const electron = require('electron');
const path = require('path');
const fs = require('fs');
class Store {
constructor(opts) {
// Renderer process has to get `app` module via `remote`, whereas the main process can get it directly
// app.getPath('userData') will return a string of the user's app data directory path.
const userDataPath = (electron.app || electron.remote.app).getPath('userData');
// We'll use the `configName` property to set the file name and path.join to bring it all together as a string
@fntlnz
fntlnz / self-signed-certificate-with-custom-ca.md
Last active April 2, 2025 11:18
Self Signed Certificate with Custom Root CA

Create Root CA (Done once)

Create Root Key

Attention: this is the key used to sign the certificate requests, anyone holding this can sign certificates on your behalf. So keep it in a safe place!

openssl genrsa -des3 -out rootCA.key 4096
@anhldbk
anhldbk / README.md
Last active February 27, 2025 07:18
TLS client & server in NodeJS

1. Overview

This is an example of using module tls in NodeJS to create a client securely connecting to a TLS server.

It is a modified version from documentation about TLS, in which:

  • The server is a simple echo one. Clients connect to it, get the same thing back if they send anything to the server.
  • The server is a TLS-based server.
  • Clients somehow get the server's public key and use it to work securely with the server

2. Preparation

@sid24rane
sid24rane / net.js
Last active March 30, 2025 23:09
Simple TCP Client and Server in Node.js (Covering all useful Properties & Methods)
var net = require('net');
// creates the server
var server = net.createServer();
//emitted when server closes ...not emitted until all connections closes.
server.on('close',function(){
console.log('Server closed !');
});
@Xaekai
Xaekai / ipc.example.js
Created July 11, 2016 18:12
Example of Interprocess communication in Node.js through a UNIX domain socket
/*
**
** Example of Interprocess communication in Node.js through a UNIX domain socket
**
** Usage:
** server> MODE=server node ipc.example.js
** client> MODE=client node ipc.example.js
**
*/
@cecilemuller
cecilemuller / letsencrypt_2020.md
Last active January 9, 2025 12:22
How to setup Let's Encrypt for Nginx on Ubuntu 18.04 (including IPv6, HTTP/2 and A+ SSL rating)

How to setup Let's Encrypt for Nginx on Ubuntu 18.04 (including IPv6, HTTP/2 and A+ SLL rating)


Virtual hosts

Let's say you want to host domains first.com and second.com.

Create folders for their files:

@graphicbeacon
graphicbeacon / chat-server.js
Last active October 10, 2023 16:37
A simple TCP chat server with NodeJS, based on the example provided by creationix.
var net = require('net');
var sockets = [];
var port = 8000;
var guestId = 0;
var server = net.createServer(function(socket) {
// Increment
guestId++;
socket.nickname = "Guest" + guestId;
@tedmiston
tedmiston / nodejs-tcp-example.js
Last active April 1, 2025 08:06
Node.js TCP client and server example
/*
In the node.js intro tutorial (http://nodejs.org/), they show a basic tcp
server, but for some reason omit a client connecting to it. I added an
example at the bottom.
Save the following server in example.js:
*/
var net = require('net');