readBioPublicKey method
Implementation
Future<PublicKeyModel?> readBioPublicKey() async {
var store = StoreRef.main();
final result = await store.record("biometric").get(db);
if (result == null) return null;
final keyJson = jsonEncode(result);
final keyData = jsonDecode(keyJson);
final publicKey = keyData["publicKey"];
final credId = keyData["credentialId"];
if (publicKey == null || credId == null) return null;
return PublicKeyModel(key: publicKey, credId: credId);
}