sizeReport.js

var minicert = require('./build/src/main.js');
/*
    This script prints a simple report of the key and certificate sizes
    for different cipher suites.
*/

console.log("Suite   Secret Key   Public Key   Certificate  Signature")

let curves = ['p192', 'p256'];

curves.forEach(suite => {

    const mc = new minicert(suite, minicert.insecureRandom);

    // Step 1: Key generation for ca and user
    const caPrivate = mc.newPrivateKey();

    const userPrivate = mc.newPrivateKey();
    const userPublic = mc.computePublicKeyFromPrivateKey(userPrivate);

    // Step 2: Ca signs a certificate for the user 
    const validityStart = mc.now();
    const vallidityEnd = mc.plus(validityStart, 1, 0, 0, 0, 0, 0);
    const certificate = mc.signCertificate("user", userPublic, validityStart, vallidityEnd, caPrivate);
    const signature = mc.sign('foobar', userPrivate);

    const privateKeySize = userPrivate.length / 2; // always two chars per byte
    const publicKeySize = userPublic.length / 2;
    const certificateSize = certificate.length / 2;
    const signatureSize = signature.length / 2;



    console.log('%s      %d         %d           %d          %d', suite, privateKeySize, publicKeySize, certificateSize, signatureSize);
});