RtlValidSid function (ntifs.h)

Article
02/22/2024

The RtlValidSid routine validates a security identifier (SID) by verifying that the revision number is within a known range and that the number of subauthorities is less than the maximum.

Syntax

NTSYSAPI BOOLEAN RtlValidSid(
  [in] PSID Sid
);

Parameters

[in] Sid

Pointer to the SID structure to validate.

Return value

RtlValidSid returns TRUE if the security descriptor is valid, FALSE otherwise.

Remarks

For more information about security and access control, see Windows security model for driver developers and the documentation on these topics in the Windows SDK.

Requirements

Requirement	Value
Target Platform	Universal
Header	ntifs.h (include Ntifs.h)
Library	NtosKrnl.lib
DLL	NtosKrnl.exe (kernel mode); Ntdll.dll (user mode)
IRQL	<= APC_LEVEL