---
title: "createCredentialAssertionRequest(clientData:)"
framework: authenticationservices
role: symbol
role_heading: Instance Method
path: "authenticationservices/asauthorizationwebbrowsersecuritykeypublickeycredentialprovider-8xc1s/createcredentialassertionrequest(clientdata:)"
---

# createCredentialAssertionRequest(clientData:)

Creates a credential assertion request for authenticating to the relying party.

## Declaration

```swift
func createCredentialAssertionRequest(clientData: ASPublicKeyCredentialClientData) -> ASAuthorizationSecurityKeyPublicKeyCredentialAssertionRequest
```

## Parameters

- `clientData`: The client data that contains the reply to the relying party’s challenge.

## See Also

### Creating credential assertion requests

- [createCredentialRegistrationRequest(clientData:displayName:name:userID:)](authenticationservices/asauthorizationwebbrowsersecuritykeypublickeycredentialprovider-8xc1s/createcredentialregistrationrequest(clientdata:displayname:name:userid:).md)