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# ASAuthorizationSecurityKeyPublicKeyCredentialAssertion

A class that represents the security key credential assertion type.

```
class ASAuthorizationSecurityKeyPublicKeyCredentialAssertion
```

## Overview

The security key creates an assertion when signing in with an existing credential. Use this class to verify the security key credential assertion when the authorization controller calls [`authorizationController(controller:didCompleteWithAuthorization:)`](/documentation/AuthenticationServices/ASAuthorizationControllerDelegate/authorizationController(controller:didCompleteWithAuthorization:)).

## Topics

### Instance Properties

[`appID`](/documentation/AuthenticationServices/ASAuthorizationSecurityKeyPublicKeyCredentialAssertion/appID)


---

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