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# ASPasskeyAssertionCredential

A passkey assertion credential.

```
class ASPasskeyAssertionCredential
```

## Overview

Create a passkey assertion credential to provide a response to a passkey authentication challenge from your credential provider extension. Call [`completeAssertionRequest(using:completionHandler:)`](/documentation/AuthenticationServices/ASCredentialProviderExtensionContext/completeAssertionRequest(using:completionHandler:)), passing your passkey assertion credential.

## Topics

### Creating a passkey assertion credential

[`credentialWithUserHandle:relyingParty:signature:clientDataHash:authenticatorData:credentialID:`](/documentation/AuthenticationServices/ASPasskeyAssertionCredential/credentialWithUserHandle:relyingParty:signature:clientDataHash:authenticatorData:credentialID:)

Creates and initializes a new passkey assertion credential.

[`init(userHandle:relyingParty:signature:clientDataHash:authenticatorData:credentialID:)`](/documentation/AuthenticationServices/ASPasskeyAssertionCredential/init(userHandle:relyingParty:signature:clientDataHash:authenticatorData:credentialID:))

Initializes a passkey assertion credential object.

[`initWithUserHandle:relyingParty:signature:clientDataHash:authenticatorData:credentialID:extensionOutput:`](/documentation/AuthenticationServices/ASPasskeyAssertionCredential/initWithUserHandle:relyingParty:signature:clientDataHash:authenticatorData:credentialID:extensionOutput:)

Initializes a passkey assertion credential object, optionally specifying an extension output.

[`init(userHandle:relyingParty:signature:clientDataHash:authenticatorData:credentialID:extensionOutput:)`](/documentation/AuthenticationServices/ASPasskeyAssertionCredential/init(userHandle:relyingParty:signature:clientDataHash:authenticatorData:credentialID:extensionOutput:))

Initializes a passkey assertion credential object, optionally specifying an extension output.

### Accessing credential information

[`authenticatorData`](/documentation/AuthenticationServices/ASPasskeyAssertionCredential/authenticatorData)

The authenticator data of the application that created this passkey assertion credential.

[`clientDataHash`](/documentation/AuthenticationServices/ASPasskeyAssertionCredential/clientDataHash)

A hash of the client data for this credential.

[`credentialID`](/documentation/AuthenticationServices/ASPasskeyAssertionCredential/credentialID)

The identifier for this credential.

[`relyingParty`](/documentation/AuthenticationServices/ASPasskeyAssertionCredential/relyingParty)

The relying party associated with this passkey.

[`signature`](/documentation/AuthenticationServices/ASPasskeyAssertionCredential/signature)

The cryptographic signature of this credential.

[`userHandle`](/documentation/AuthenticationServices/ASPasskeyAssertionCredential/userHandle)

The user handle of this passkey.

### Accessing extension output

[`extensionOutput`](/documentation/AuthenticationServices/ASPasskeyAssertionCredential/extensionOutput-46ib3)

An output from WebAuthn extensions.

[`ASPasskeyAssertionCredentialExtensionOutput`](/documentation/AuthenticationServices/ASPasskeyAssertionCredentialExtensionOutput-c.class)

A class that encapsulates output for various WebAuthn extensions during passkey assertion.

[`extensionOutput`](/documentation/AuthenticationServices/ASPasskeyAssertionCredential/extensionOutput-7t6rn)

An output from WebAuthn extensions.

[`ASPasskeyAssertionCredentialExtensionOutput`](/documentation/AuthenticationServices/ASPasskeyAssertionCredentialExtensionOutput-swift.struct)

A type that encapsulates output for various WebAuthn extensions during passkey assertion.


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