SID_IDENTIFIER_AUTHORITY

The SID_IDENTIFIER_AUTHORITY structure represents the top-level authority of a security identifier (SID). 

typedef struct _SID_IDENTIFIER_AUTHORITY { // sia 
    BYTE Value[6]; 
} SID_IDENTIFIER_AUTHORITY ;

Members

Value
An array of six bytes specifying a SID's top-level authority.

Remarks

The identifier authority value identifies the agency that issued the SID. Some identifier authorities are predefined:

Identifier authority Value
SECURITY_NULL_SID_AUTHORITY 0
SECURITY_WORLD_SID_AUTHORITY 1
SECURITY_LOCAL_SID_AUTHORITY 2
SECURITY_CREATOR_SID_AUTHORITY 3
SECURITY_NT_AUTHORITY 5

A SID must contain a top-level authority and at least one relative identifier (RID) value.

QuickInfo

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

See Also

Access Control Overview, Access Control Structures, AllocateAndInitializeSid, GetSidIdentifierAuthority, InitializeSid, SID