NOTE

Can a WIKI page be renamed? I typed "LSA" instead of "Lsa"

C# Signature:

[DllImport("advapi32.dll")]
private static extern UInt32 LsaRetrievePrivateData(
     IntPtr policyHandle,
     [MarshalAs(UnmanagedType.CustomMarshaler,MarshalTypeRef=typeof(LSAStringMarshaler))] string KeyName,
     [MarshalAs(UnmanagedType.CustomMarshaler,MarshalTypeRef=typeof(LSAStringMarshaler))] ref string PrivateData
);

VB Signature:

Private Declare Function LsaRetrievePrivateData Lib "ADVAPI32.dll" (ByVal PolicyHandle As Long, ByRef KeyName As LSA_UNICODE_STRING, ByVal PrivateData As Long) As Long

User-Defined Types:

Private Type LSA_UNICODE_STRING
   Length          As Integer  ' WORD
   MaximumLength   As Integer  ' WORD
   Buffer          As Long     ' PWCHAR - pointer
End Type

Alternative Managed API:

Do you know one? Please contribute it!

Notes:

See LsaOpenPolicy for the custom marshaler and some more info on it.

Tips & Tricks:

Do not use the LSA private data functions. Instead, use the CryptProtectData and CryptUnprotectData functions.

(However, these won't do when you need to modify COM runas Passwords ...)

Sample Code:

Please add some!

Please edit this page!

Do you have...

• helpful tips or sample code to share for using this API in managed code?
• corrections to the existing content?
• variations of the signature you want to share?
• additional languages you want to include?

Select "Edit This Page" on the right hand toolbar and edit it! Or add new pages containing supporting types needed for this API (structures, delegates, and more).