> 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/authentication/sec_get_key_fn.md).

# SEC\_GET\_KEY\_FN

```csharp
[UnmanagedFunctionPointerAttribute(CallingConvention.Winapi)]
public unsafe delegate void SEC_GET_KEY_FN(
    void* Arg,
    void* Principal,
    uint KeyVer,
    void** Key,
    HRESULT* Status);
```