TOKEN_SOURCE

The TOKEN_SOURCE structure identifies the source of an access token.

typedef struct _TOKEN_SOURCE { // ts 
    Char Sourcename[8]; 
    LUID SourceIdentifier; 
} TOKEN_SOURCE;

SourceName: Specifies an 8-byte character string used to identify the source of an access token. This is used to distinguish between such sources as Session Manager, LAN Manager, and RPC Server. A string, rather than a constant, is used to identify the source so users and developers can make extensions to the system, such as by adding other networks, that act as the source of access tokens.
SourceIdentifier: Specifies a locally unique identifier (LUID) provided by the source component named by the SourceName member. This value aids the source component in relating context blocks, such as session-control structures, to the token. This value is typically, but not necessarily, an LUID.

  Windows NT: Requires version 3.1 or later.
  Windows: Unsupported.
  Windows CE: Unsupported.
  Header: Declared in winnt.h.