1const assert = require('assert');
 2const BigInteger = require('bigi');
 3var {Point} = require('ecurve')
 4const {keccak256} = require("@ethersproject/keccak256");
 5
 6const {newBigFromString, ecparams, newKeyPair, newRequestParameters, blind, blindSign, unblind, verify} = require("../src/index.js");
 7
 8describe("keccak256", function () {
 9    it("keccak256", async () => {
10	const m = BigInteger.fromBuffer(Buffer.from("test", 'utf8'));
11	const mHex = m.toString(16);
12	const hHex = keccak256('0x' + mHex);
13	assert.equal('0x9c22ff5f21f0b81b113e63f7db6da94fedef11b2119b4088b89664fb9a3cb658', hHex);
14	const h = BigInteger.fromHex(hHex.slice(2));
15	assert.equal('70622639689279718371527342103894932928233838121221666359043189029713682937432', h.toString());
16    });
17});
18
19describe("test blind", function () {
20    it("blind", async () => {
21	    const {sk, pk} = newKeyPair();
22
23	    const {k, signerR} = newRequestParameters();
24
25	    const msg = BigInteger.fromBuffer(
26		    Buffer.from("test", 'utf8')
27	    );
28	    assert.equal('1952805748', msg.toString());
29
30	    const {mBlinded, userSecretData} = blind(msg, signerR);
31
32	    const sBlind = blindSign(sk, mBlinded, k);
33
34	    const sig = unblind(sBlind, userSecretData);
35
36	    const verified = verify(msg, sig, pk);
37	    assert.equal(true, verified);
38    });
39});