---
title: clientDataHash
framework: authenticationservices
role: symbol
role_heading: Instance Property
path: authenticationservices/aspasskeycredentialrequestparameters/clientdatahash
---

# clientDataHash

The client data that you sign as part of the response.

## Declaration

```swift
var clientDataHash: Data { get }
```

## See Also

### Viewing credential request parameters

- [allowedCredentials](authenticationservices/aspasskeycredentialrequestparameters/allowedcredentials.md)
- [relyingPartyIdentifier](authenticationservices/aspasskeycredentialrequestparameters/relyingpartyidentifier.md)
- [userVerificationPreference](authenticationservices/aspasskeycredentialrequestparameters/userverificationpreference.md)