I'm trying to PInvoke the 'CredRead' function in Advapi32.dll. It
doesn't seem to work. CredRead returns true, but the CREDENTIALS struct

has flag set to 1538928. Anyone know what it means ? Is my CREDENTIALS
struct incorrect?

PInvoke Signature used:
-----------------------
[DllImport("advapi32.dll", EntryPoint="CredReadW", CharSet =
CharSet.Unicode)]
               public static extern bool CredRead(string target,
CRED_TYPE type, int
reservedFlag, ref CREDENTIAL credential);

User Defined Structures:
------------------------
public enum CRED_TYPE : int
{
       GENERIC = 1,
       DOMAIN_PASSWORD = 2,
       DOMAIN_CERTIFICATE = 3,
       DOMAIN_VISIBLE_PASSWORD = 4,
       MAXIMUM = 5

}

[StructLayout(LayoutKind.Seque­ntial, CharSet=CharSet.Unicode)]
public struct CREDENTIAL
{
       public UInt32 flags;
       public UInt32 type;
       public string targetName;
       public string comment;
       public FILETIME lastWritten;
       public UInt32 credentialBlobSize;
       public IntPtr credentialBlob;
       public UInt32 persist;
       public UInt32 attributeCount;
       public IntPtr credAttribute;
       public string targetAlias;
       public string userName;

}

Method Call:
------------
Security.CREDENTIAL credential = new CREDENTIAL();
bool bSuccess = Security.Advapi32Wrapper.CredR­ead(target,
CRED_TYPE.GENERIC, 0, ref credential));

(NOTE: bSuccess returns TRUE, credentials is not null)

Result:
-------
flags = 1538928
attributeCount = 0
comment = null
credAttribute = 0
credentialBlob = 0
credentialBlobSize = 0
lastWritten = {System.Runtime.InteropService­s.FILETIME}
persist = 0
targetAlias = null
targetName = null
type =  0
userName = null

Seems correct, the flags field must be masked with 0x0000000F, only the
least significant 4 bits count, in your case flags = 8 (check the header for
the meaning of Credential flags field).

Willy.