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# ASAuthorizationPublicKeyCredentialParameters

An object that provides required parameters for the credential during registration.

```
class ASAuthorizationPublicKeyCredentialParameters
```

## Overview

This object is mainly for signing algorithm negotiation, and is only relevant for physical security keys.

## Topics

### Getting the parameters

[`init(algorithm:)`](/documentation/AuthenticationServices/ASAuthorizationPublicKeyCredentialParameters/init(algorithm:))

Creates the object with an algorithm.

[`algorithm`](/documentation/AuthenticationServices/ASAuthorizationPublicKeyCredentialParameters/algorithm)

The algorithm to use for negitation between the authenticator and the relying party.


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