* init p2p polling app

app/utils/crypto.ts

@@ -0,0 +1,42 @@
+// utils/crypto.ts
+export const generateUserKeyPair = async () => {
+  return await window.crypto.subtle.generateKey(
+    {
+      name: "RSASSA-PKCS1-v1_5",
+      modulusLength: 2048,
+      publicExponent: new Uint8Array([1, 0, 1]), // 65537
+      hash: "SHA-256",
+    },
+    true, // extractable
+    ["sign", "verify"]
+  );
+};
+
+export const signVote = async (data: any, privateKey: CryptoKey) => {
+  const encoder = new TextEncoder();
+  const encodedData = encoder.encode(JSON.stringify(data));
+
+  const signature = await window.crypto.subtle.sign(
+    "RSASSA-PKCS1-v1_5",
+    privateKey,
+    encodedData
+  );
+
+  // Convert to Base64 or Hex to store in Yjs easily
+  return btoa(String.fromCharCode(...new Uint8Array(signature)));
+};
+
+export const verifyVote = async (data: any, signatureStr: string, publicKey: CryptoKey) => {
+  const encoder = new TextEncoder();
+  const encodedData = encoder.encode(JSON.stringify(data));
+  
+  // Convert Base64 back to Uint8Array
+  const signature = Uint8Array.from(atob(signatureStr), c => c.charCodeAt(0));
+
+  return await window.crypto.subtle.verify(
+    "RSASSA-PKCS1-v1_5",
+    publicKey,
+    signature,
+    encodedData
+  );
+};