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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.

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.

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)

How to Encode / Decode to / from base64 in Node.JS

Today I ran into this basic problem. A quick search on google gave me the answer, I tested it, it worked, and the rest is history. Here is the code. let plainText = "Hello World!"; console.log("Plaint text = " + plainText); // Encoding to base64 let base64 = new Buffer(

How to Encrypt / Decrypt with AES in Java 1.8

Here I have created a class that does it in two different ways, the first one is, when you create the key, and the other is when you are given the key, valid key sizes are 128, 192, and 256 for AES algorithm. There is some steps to follow before

How to fold / unfold all regions in Visual Studio Code

With JSON files of around 900 lines, this option is very useful to have an organized view. I highly recommend to check the links, there is a lot of things you can do with Visual Studio Code, my version is 1.10.2, and the following shortcuts are working. Ctrl+