/* global it */
var assert = require('assert');
var bitcoinjs = require('../');
var sec = require('../src/jsbn/sec');
var BigInteger = require('../src/jsbn/jsbn.js');
var Crypto = require('../src/crypto-js/crypto.js');

var SecureRandom = require('../src/jsbn/rng');
var rng = new SecureRandom();

var ecparams = sec('secp256k1');
var ECPointFp = bitcoinjs.ECPointFp;

it('Keys & Key Management', function () {
    var p1 = bitcoinjs.Key().getPub()['export']('bytes');
    assert.equal(p1.length, 65);

    var p1_q = ECPointFp.decodeFrom(ecparams.getCurve(), p1);
    assert.ok(p1_q);
    assert.ok(p1_q.validate());

    var p2 = bitcoinjs.convert.hexToBytes(
        '0486f356006a38b847bedec1bf47013776925d939d5a35a97a4d1263e550c7f1a' +
        'b5aba44ab74d22892097a0e851addf07ba97e33416df5affaceeb35d5607cd23c');

    var p2_q = ECPointFp.decodeFrom(ecparams.getCurve(), p2);
    assert.ok(p2_q);
    assert.ok(p2_q.validate());
});

it('Signing and Verifying', function () {
    var s1 = bitcoinjs.Key();
    var sig_a = s1.sign(BigInteger.ZERO);
    assert.ok(sig_a, 'Sign null');

    assert.ok(s1.verify(BigInteger.ZERO, sig_a));

    var message = new BigInteger(1024, rng).toByteArrayUnsigned();
    var hash = Crypto.SHA256(message, {
        asBytes: true
    });
    var sig_b = s1.sign(hash);
    assert.ok(sig_b, 'Sign random string');
    assert.ok(s1.verify(hash, sig_b));

    var message2 = bitcoinjs.convert.hexToBytes(
        '12dce2c169986b3346827ffb2305cf393984627f5f9722a1b1368e933c8d' +
        'd296653fbe5d7ac031c4962ad0eb1c4298c3b91d244e1116b4a76a130c13' +
        '1e7aec7fa70184a71a2e66797052831511b93c6e8d72ae58a1980eaacb66' +
        '8a33f50d7cefb96a5dab897b5efcb99cbafb0d777cb83fc9b2115b69c0fa' +
        '3d82507b932b84e4');

    var hash2 = Crypto.SHA256(message2, {
        asBytes: true
    });

    var sig_c = bitcoinjs.convert.hexToBytes(
        '3044022038d9b8dd5c9fbf330565c1f51d72a59ba869aeb2c2001be959d3' +
        '79e861ec71960220a73945f32cf90d03127d2c3410d16cee120fa1a4b4c3' +
        'f273ab082801a95506c4');

    var s2 = bitcoinjs.convert.hexToBytes(
        '045a1594316e433fb91f35ef4874610d22177c3f1a1060f6c1e70a609d51' +
        'b20be5795cd2a5eae0d6b872ba42db95e9afaeea3fbb89e98099575b6828' +
        '609a978528');

    assert.ok(bitcoinjs.ecdsa.verify(hash2, sig_c, s2), 'Verify constant signature');
});