The GetSidSubAuthority function returns the address of a specified subauthority in a SID structure. The subauthority value is a relative identifier (RID). A SID is a security identifier.
PDWORD GetSidSubAuthority(
| PSID pSid, | // address of security identifier to query |
| DWORD nSubAuthority | // index of subauthority to retrieve |
| ); |
Parameters
pSid
Points to the SID structure from which the address of a subauthority is to be returned.
nSubAuthority
Specifies an index value identifying the subauthority array element whose address the function will return. The function performs no validation tests on this value. An application can call the GetSidSubAuthorityCount function to discover the range of acceptable values.
Return Values
If the function succeeds, the return value is the address of the specified SID subauthority. To get extended error information, call GetLastError.
If the function fails, the return value is undefined. The function fails if the specified SID structure is invalid or if the index value specified by the nSubAuthority parameter is out of bounds.
See Also
GetLengthSid, GetSidIdentifierAuthority, GetSidLengthRequired, GetSidSubAuthorityCount, IsValidSid, SID