https://learn.microsoft.com/en-us/windows/win32/api/ntsecapi/ne-ntsecapi-msv1_0_protocol_message_type
MSV1_0_PROTOCOL_MESSAGE_TYPE (ntsecapi.h) - Win32 apps | Microsoft Learn
Lists the types of messages that can be sent to the MSV1_0 Authentication Package by calling the LsaCallAuthenticationPackage function.
protocolmessagetype