SID

The SID structure is a variable-length structure used to uniquely identify users or groups. SID stands for security identifier.

Applications are not to modify the SID structure directly. To create and manipulate a security identifier, use the functions listed in the See Also section.

typedef struct _SID {
  BYTE  Revision;
  BYTE  SubAuthorityCount;
   SID_IDENTIFIER_AUTHORITY IdentifierAuthority;
  DWORD SubAuthority[ANYSIZE_ARRAY];
} SID;
typedef PVOID PSID; 

Requirements

  Windows NT/2000: Requires Windows NT 3.1 or later.
  Header: Declared in Winnt.h; include Windows.h.

See Also

Access Control Overview, Access Control Structures, AllocateAndInitializeSid, CopySid, EqualSid, FreeSid, GetLengthSid, GetSidIdentifierAuthority, GetSidLengthRequired, GetSidSubAuthority, GetSidSubAuthorityCount, InitializeSid, IsValidSid, LookupAccountName, LookupAccountSid