> For the complete documentation index, see [llms.txt](https://docs.wisej.com/extensions/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.wisej.com/extensions/extensions/webauthn/api/wisej.ext.webauthn.clientdata.md).

# ClientData

Namespace: **Wisej.Ext.WebAuthn**

Assembly: **Wisej.Ext.WebAuthn** (3.2.0.0)

The client data represents the contextual bindings of both the WebAuthn Relying Party and the client.

{% tabs %}
{% tab title="C#" %}

```csharp
public class ClientData
```

{% endtab %}

{% tab title="VB.NET" %}

```visual-basic
Public Class ClientData
```

{% endtab %}
{% endtabs %}

## Constructors

### ![](/files/-MirBsnmjWIxMsN8l0Ms)ClientData()

## Properties

### ![](/files/-MirBsnmjWIxMsN8l0Ms)Base64

[String](https://docs.microsoft.com/en-us/dotnet/api/system.string): The client data in base64 format.

### ![](/files/-MirBsnmjWIxMsN8l0Ms)Challenge

[Byte\[\]](https://docs.microsoft.com/en-us/dotnet/api/system.byte): The challenge returned from the client.

### ![](/files/-MirBsnmjWIxMsN8l0Ms)Origin

[String](https://docs.microsoft.com/en-us/dotnet/api/system.string): This member contains the fully qualified origin of the requester, as provided to the authenticator by the client, in the syntax defined by \[RFC6454].

### ![](/files/-MirBsnmjWIxMsN8l0Ms)Type

[String](https://docs.microsoft.com/en-us/dotnet/api/system.string): This member contains the string "webauthn.create" when creating new credentials, and "webauthn.get" when getting an assertion from an existing credential.

The purpose of this member is to prevent certain types of signature confusion attacks (where an attacker substitutes one legitimate signature for another).


---

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