> For the complete documentation index, see [llms.txt](https://www.pinvoke.dev/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://www.pinvoke.dev/secur32/lsacallauthenticationpackage.md).

# LsaCallAuthenticationPackage

```csharp
[DllImport("SECUR32.dll", ExactSpelling = true)]
[DefaultDllImportSearchPaths(DllImportSearchPath.System32)]
public static extern unsafe NTSTATUS LsaCallAuthenticationPackage(
    HANDLE LsaHandle,
    uint AuthenticationPackage,
    void* ProtocolSubmitBuffer,
    uint SubmitBufferLength,
    [Optional] void** ProtocolReturnBuffer,
    [Optional] uint* ReturnBufferLength,
    [Optional] int* ProtocolStatus);
```