---
title: prf
framework: authenticationservices
role: symbol
role_heading: Instance Property
path: authenticationservices/asauthorizationsecuritykeypublickeycredentialassertionrequest/prf-7pp6b
---

# prf

## Declaration

```swift
var prf: ASAuthorizationPublicKeyCredentialPRFAssertionInput? { get set }
```