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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

[`-  initWithAlgorithm:`](/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.

## Relationships

### Conforms To

[`CustomStringConvertible`](/documentation/Swift/CustomStringConvertible)

[`CVarArg`](/documentation/Swift/CVarArg)

[`Equatable`](/documentation/Swift/Equatable)

[`Sendable`](/documentation/Swift/Sendable)

[`NSCopying`](/documentation/Foundation/NSCopying)

[`SendableMetatype`](/documentation/Swift/SendableMetatype)

[`NSObjectProtocol`](/documentation/ObjectiveC/NSObjectProtocol)

[`NSSecureCoding`](/documentation/Foundation/NSSecureCoding)

[`Hashable`](/documentation/Swift/Hashable)

[`NSCoding`](/documentation/Foundation/NSCoding)

[`CustomDebugStringConvertible`](/documentation/Swift/CustomDebugStringConvertible)

### Inherits From

[`NSObject-swift.class`](/documentation/ObjectiveC/NSObject-swift.class)

---

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