Digital Signature Algorithm (Node.js)

1. GENERATE DSA PARAM

openssl dsaparam -out dsaparam.pem 2048

2. GENERATE DSA PRIVATE KEY

Without Encrypted Private Key

openssl gendsa -out privatekey.pem dsaparam.pem

With Encrypted Private Key

openssl gendsa -aes256 -out privatekey.enc.pem dsaparam.pem

3. GENERATE DSA PUBLIC KEY

Without Encrypted Private Key

openssl dsa -in privatekey.pem -pubout -out publickey.pem

With Encrypted Private Key

openssl dsa -in privatekey.enc.pem -pubout -out publickey.enc.pem

4. HOW TO USE THIS PACKAGE

const DSA = require('@kusnadi/dsa-js');

const dsa = new DSA("sha256");

// Load Private And Public Key
// if Private Key not encrypted, leave blank the second param of loadPrivateKey
dsa.loadPrivateKey("./privatekey.enc.pem", "admin123");
dsa.loadPublicKey("./publickey.enc.pem");


let message = "hallo";

// Create Signture
let signature = dsa.createSignature(message);

// Check Signature
let isVerfified = dsa.verify(message, signature);

console.log(message, signature, isVerfified);

REFERENSI https://github.com/restuhaqza/digital-signature