bitcoinjs-lib/test/ec.js

/* global describe, it */
var assert = require('assert');
var sec = require('../src/jsbn/sec');
var ecdsa = require('../').ecdsa;

var ecparams = sec('secp256k1');

describe('ecdsa', function() {
    it('handles point ultiplication', function() {
        var G = ecparams.getG();
        var n = ecparams.getN();

        assert.ok(G.multiply(n).isInfinity(), "Gn is infinite");

        var k = ecdsa.getBigRandom(n);
        var P = G.multiply(k);
        assert.ok(!P.isInfinity(), "kG is not infinite");
        assert.ok(P.isOnCurve(), "kG on curve");
        assert.ok(P.multiply(n).isInfinity(), "kGn is infinite");

        assert.ok(P.validate(), "kG validates as a public key");
    })
})