2019-04-09 21:37:39 +02:00
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<html>
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<header>
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</header>
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<script src="websnark.js"></script>
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<script>
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var witness;
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2019-04-27 07:09:17 +02:00
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var provingKey;
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2019-04-09 21:37:39 +02:00
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function onLoad() {
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fetch("proving_key.bin").then( (response) => {
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return response.arrayBuffer();
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}).then( (b) => {
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provingKey = b;
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});
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fetch("witness.bin").then( (response) => {
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return response.arrayBuffer();
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}).then( (b) => {
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witness = b;
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});
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}
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function calcProof() {
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const start = new Date().getTime();
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document.getElementById("time").innerHTML = "processing....";
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document.getElementById("proof").innerHTML = "";
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window.genZKSnarkProof(witness, provingKey).then((p)=> {
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const end = new Date().getTime();
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const time = end - start;
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document.getElementById("time").innerHTML = `Time to compute: ${time}ms`;
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document.getElementById("proof").innerHTML = JSON.stringify(p, null, 1);
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});
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}
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2019-04-27 07:09:17 +02:00
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function test() {
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const groth16 = window.groth16;
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const nSignals = 1;
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const pkey32 = new Uint32Array(provingKey);
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const pPointsA = pkey32[5];
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const points = provingKey.slice(pPointsA, pPointsA + nSignals*64);
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const signals = witness.slice(0, nSignals*32);
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const pr1 = groth16.alloc(96);
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const pPoints = groth16.alloc(points.byteLength);
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groth16.putBin(pPoints, points);
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const pSignals = groth16.alloc(signals.byteLength);
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groth16.putBin(pSignals, signals);
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groth16.instance.exports.g1_zero(pr1);
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groth16.instance.exports.g1_multiexp(pSignals, pPoints, nSignals, 1, pr1);
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groth16.instance.exports.g1_affine(pr1, pr1);
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groth16.instance.exports.g1_fromMontgomery(pr1, pr1);
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const r1 = groth16.bin2g1(groth16.getBin(pr1, 96));
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groth16.instance.exports.g1_zero(pr1);
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groth16.instance.exports.g1_multiexp2(pSignals, pPoints, nSignals, 1, pr1);
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groth16.instance.exports.g1_affine(pr1, pr1);
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groth16.instance.exports.g1_fromMontgomery(pr1, pr1);
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const r2 = groth16.bin2g1(groth16.getBin(pr1, 96));
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console.log(r1);
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console.log(r2);
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}
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2019-04-09 21:37:39 +02:00
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</script>
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<body onLoad="onLoad()">
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<h1>iden3</h1>
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<h2>Zero knowledge proof generator</h2>
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<button onClick="calcProof()">Test</button>
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<div id="time"></div>
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<pre id="proof"></pre>
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</body>
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</html>
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