make a passkey-generator in start & home pages, and make that the default

src/libs/util.ts

@@ -11,6 +11,9 @@ import { MASTER_SETTINGS_KEY } from "@/db/tables/settings";
 import { deriveAddress, generateSeed, newIdentifier } from "@/libs/crypto";
 import { GenericCredWrapper, containsHiddenDid } from "@/libs/endorserServer";
 import * as serverUtil from "@/libs/endorserServer";
+import { createPeerDid, registerCredential } from "@/libs/didPeer";
+
+import { Buffer } from "buffer";
 
 export const PRIVACY_MESSAGE =
   "The data you send be visible to the world -- except: your IDs and the IDs of anyone you tag will stay private, only visible to those you allow.";
@@ -239,6 +242,38 @@ export const generateSaveAndActivateIdentity = async (): Promise<string> => {
   return newId.did;
 };
 
+export const registerAndSavePasskey = async (
+  keyName: string,
+): Promise<Account> => {
+  const cred = await registerCredential(keyName);
+  const publicKeyBytes = cred.publicKeyBytes;
+  const did = createPeerDid(publicKeyBytes as Uint8Array);
+  const passkeyCredIdHex = cred.credIdHex as string;
+
+  const account = {
+    dateCreated: new Date().toISOString(),
+    did,
+    passkeyCredIdHex,
+    publicKeyHex: Buffer.from(publicKeyBytes).toString("hex"),
+  };
+  await accountsDB.open();
+  await accountsDB.accounts.add(account);
+  return account;
+};
+
+export const registerSaveAndActivatePasskey = async (
+  keyName: string,
+): Promise<Account> => {
+  const account = await registerAndSavePasskey(keyName);
+
+  await db.open();
+  await db.settings.update(MASTER_SETTINGS_KEY, {
+    activeDid: account.did,
+  });
+
+  return account;
+};
+
 export const sendTestThroughPushServer = async (
   subscriptionJSON: PushSubscriptionJSON,
   skipFilter: boolean,