1 files changed, 60 insertions, 0 deletions
diff --git a/prog/ž/gen.html b/prog/ž/gen.html
new file mode 100644
index 0000000..47fe749
--- /dev/null
+++ b/prog/ž/gen.html
@@ -0,0 +1,60 @@
+<!DOCTYPE html>
+<h1>private</h1>
+<canvas id=privkey></canvas>
+<div id=privd></div>
+<h1>public</h1>
+<canvas id=pubkey></canvas>
+<div id=pubsec1></div>
+<script src=QR-Code-generator/typescript-javascript/qrcodegen.js></script>
+<script>
+function draw_canvas (qr, scale, border, light, dark, canvas) {
+	canvas.width = canvas.height = (qr.size + border * 2) * scale;
+	let ctx = canvas.getContext("2d");
+	for (let y = -border; y < qr.size + border; y++) {
+		for (let x = -border; x < qr.size + border; x++) {
+			ctx.fillStyle = qr.getModule(x, y) ? dark : light;
+			ctx.fillRect((x + border) * scale, (y + border) * scale, scale, scale);
+		}
+	}
+}
+function a2hex (a) {
+	let r = "";
+	const hexchars = ["0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "a", "b", "c", "d", "e", "f"];
+	for (let i = 0; i < a.length; i++) {
+		r += hexchars[a[i] >> 4];
+		r += hexchars[a[i] % 16];
+	}
+	return r;
+}
+async function main () {
+	while (!pubsec1.innerText.startsWith("02aa") && !pubsec1.innerText.startsWith("03aa")) {
+		window.keyobj = await crypto.subtle.generateKey(
+			{
+				name: "ECDSA",
+				namedCurve: "P-384",
+			},
+			true,
+			["sign", "verify"]
+		);
+		let jwk = await crypto.subtle.exportKey("jwk", keyobj.privateKey);
+		let d = jwk.d.replace(/-/g, "+").replace(/_/g, "/");
+		let x = (await crypto.subtle.exportKey("jwk", keyobj.publicKey)).x.replace(/-/g, "+").replace(/_/g, "/");
+		let y = (await crypto.subtle.exportKey("jwk", keyobj.publicKey)).y.replace(/-/g, "+").replace(/_/g, "/");
+		d = Uint8Array.from(atob(d), c => c.charCodeAt(0));
+		privd.innerText = a2hex(d) + "(big endian d) jwk: " + JSON.stringify(jwk);
+		draw_canvas(qrcodegen.QrCode.encodeText(JSON.stringify(jwk), qrcodegen.QrCode.Ecc.LOW), 5, 4, "#FFF", "#000", privkey);
+		x = Uint8Array.from(atob(x), c => c.charCodeAt(0));
+		y = Uint8Array.from(atob(y), c => c.charCodeAt(0));
+		var sec1 = new Uint8Array(49);
+		if (y[47] % 2)
+			sec1[0] = 3;
+		else
+			sec1[0] = 2;
+		for (let i = 0; i < 48; i++)
+			sec1[1+i] = x[i];
+		pubsec1.innerText = a2hex(sec1) + " (sec-1)";
+		draw_canvas(qrcodegen.QrCode.encodeBinary(sec1, qrcodegen.QrCode.Ecc.LOW), 10, 4, "#FFF", "#000", pubkey);
+	}
+}
+main();
+</script>