ED25519 Node.js Sample

ed25519.js

const crypto = require('crypto');
const fs = require('fs');

const data = fs.readFileSync('./data.txt');
const key = fs.readFileSync('./private_key.pem');
const pub = fs.readFileSync('./public_key.pem');
console.log('data:', data);
console.log('key:', key.toString('base64'));

const sign = crypto.sign(null, data, key);

console.log('sign:', sign.toString('base64'), sign.toString('base64').length);
console.log('verified:', crypto.verify(null, data, pub, sign));

const now = Date.now();
for (let i = 0; i < 10000; i++) {
  crypto.verify(null, data, pub, sign);
}
console.log('It takes time to verify 10,000 times:', (Date.now() - now) / 1000);