Tech Rescue

Hector Perez

How to activate ES6 in Visual Studio Code

I’ve been looking for this answer for several weeks. Here is how to do it. 1. Go to File > Preferences > Settings (or press Ctrl + ,) 2. Add the following code in the USER SETTINGS tab: "jshint.options": { "esversion": 6 } I have JSHint installed, if you don’t, you can install

How to Sign data and Verify signature in Node.JS

Another example that occurred to me. Very useful. What will we need? * Private key in PEM format * Public key in PEM format To get those you will have use OpenSSL, please take a look at this post How to generate RSA public and private keys with OpenSSL. For this example

How to generate RSA public and private keys with OpenSSL

Before anything, I assume that you already have OpenSSL installed in your PC. In case you don’t and you are a Windows you can download it from this URLs: * http://slproweb.com/products/Win32OpenSSL.html * http://gnuwin32.sourceforge.net/packages/openssl.htm I personally used the first one. After

Elliptic Curve Diffie-Hellman and AES Example in Node.JS

Elliptic Curve Diffie-Hellman and AES Example in Node.JS

Recently I learned how to generate shared secrets using ECDH in Node.JS, but I still had to know how to use this shared secret. Here is one application for it. Use the ECDH to generate a shared secret and then use that shared secret to cipher/decipher messages between

How to generate Diffie Hellman key pair in Node.JS

Super easy using crypto library. You can create a file called DiffieHellmanKeyPairGeneration.js for example and paste this code inside: console.log('\n- --- ( Diffie Hellman Key Pair Generator ) --- -'); var crypto = require('crypto'); var bitSize = 2048; var dh = crypto.createDiffieHellman(bitSize); dh.generateKeys(); console.log('Private Key:

How to list supported Ciphers, Hashes, and Curves for Crypto in Node.JS

Not a complicated task. Here is the code: var crypto = require('crypto'); console.log(); console.log('[ SUPPORTED CIPHERS ]\n') console.log(crypto.getCiphers()); console.log(); console.log('[ SUPPORTED HASHES ]\n') console.log(crypto.getHashes()); console.log(); console.log('[ SUPPORTED CURVES ]\n') console.log(crypto.getCurves()); Your output

How to Encrypt / Decrypt with AES in Node.JS

Easy as pie! var crypto = require('crypto'); var AES128 = "aes128"; var AES192 = "aes192"; var AES256 = "aes256"; var password = 'Austin'; var plainText = 'Texas to the bone!'; // ------------------------------------------------ var cipher = crypto.createCipher(AES128, password); var decipher = crypto.createDecipher(AES128, password); console.log('AES-128:'); // Encrypting with AES128 var encText = cipher.update(