contrib: keygen-html for generating keys in the browser

1 files changed, 71 insertions, 0 deletions

diff --git a/contrib/examples/keygen-html/keygen.html b/contrib/examples/keygen-html/keygen.html
new file mode 100644
index 0000000..a6c7392
--- /dev/null
+++ b/contrib/examples/keygen-html/keygen.html
@@ -0,0 +1,71 @@
+<script src="curve25519_generate.js"></script>
+<script>
+// License: GPLv2
+function generateWireguardKeypair()
+{
+	var privateKey = Module._malloc(32);
+	var publicKey = Module._malloc(32);
+	Module._curve25519_generate_private(privateKey);
+	Module._curve25519_generate_public(publicKey, privateKey);
+	var privateBase64 = Module._malloc(45);
+	var publicBase64 = Module._malloc(45);
+	Module._key_to_base64(privateBase64, privateKey);
+	Module._key_to_base64(publicBase64, publicKey);
+	Module._free(privateKey);
+	Module._free(publicKey);
+	var keypair = {
+		publicKey: Module.Pointer_stringify(publicBase64),
+		privateKey: Module.Pointer_stringify(privateBase64)
+	};
+	Module._free(privateBase64);
+	Module._free(publicBase64);
+	return keypair;
+}
+
+function sendPubkeyToServer(pubkey, username, password)
+{
+	alert("Sending " + username + ":" + password + " to server for new pubkey " + pubkey + "...");
+
+	// send info to server
+
+	var serverResponse = {
+		publicKey: "6spHEFoJrp9pijbxjJoS6fHjZaAWQqtdFFO/OtpVe3w=",
+		allowedIPs: [ "0.0.0.0/0", "::/0" ],
+		endpoint: "demo.wireguard.com:63321",
+		address: [ "192.168.18.42/32", "fd08:1234:1111::77/128" ],
+		dns: [ "8.8.8.8", "8.8.4.4" ]
+	}
+
+	return serverResponse;
+}
+
+function downloadNewConfiguration()
+{
+	var keypair = generateWireguardKeypair();
+	var serverResponse = sendPubkeyToServer(keypair.publicKey, "zx2c4", "supersecretpassword");
+
+	var config = [];
+	config.push("[Interface]");
+	config.push("PrivateKey = " + keypair.privateKey);
+	config.push("Address = " + serverResponse.address.join(", "));
+	config.push("DNS = " + serverResponse.dns.join(", "));
+	config.push("");
+	config.push("[Peer]");
+	config.push("PublicKey = " + serverResponse.publicKey);
+	config.push("AllowedIPs = " + serverResponse.allowedIPs.join(", "));
+	config.push("Endpoint = " + serverResponse.endpoint);
+	config.push("");
+	config = config.join("\n");
+
+	var blob = new Blob([config], { type: "text/plain" });
+	var a = document.createElement("a");
+	a.download = "demo0.conf";
+	a.href = URL.createObjectURL(blob);
+	a.style.display = "none";
+	document.body.appendChild(a);
+	a.click();
+	document.body.removeChild(a);
+}
+</script>
+
+<a href="javascript:downloadNewConfiguration()">Download a WireGuard configuration file</a>