Creating a World SID

This article was previously published under Q111543

The sample code below demonstrates how to create a World Security Identifier (SID). The World SID (S-1-1-0) is a group that includes all users. To determine if a SID (perhaps in an Access Control Entry) is the World SID, you must first create a World SID to compare it to. Once you have created a World SID, you can use the EqualSid() API (application programming interface) to determine equality.

Sample Code

PSID psidWorldSid;
SID_IDENTIFIER_AUTHORITY siaWorldSidAuthority =
     SECURITY_WORLD_SID_AUTHORITY;

psidWorldSid = (PSID)LocalAlloc(LPTR,GetSidLengthRequired( 1 ));

InitializeSid( psidWorldSid, &siaWorldSidAuthority, 1);
*(GetSidSubAuthority( psidWorldSid, 0)) = SECURITY_WORLD_RID;