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EFS, DuplicateEncryptionInfoFile() not working :(

Hi, we need a way to copy the user "list" from a encrypted file template to
new files...

I have found this in the MSDN
(http://msdn.microsoft.com/en-us/library/aa364011.aspx)

Next i have addes this 2 namespaces

using Microsoft.Win32;
using System.Runtime.InteropServices;
Have this in the class space

[DllImport("Advapi32.dll", CharSet = CharSet.Auto)]
static public extern int DuplicateEncryptionInfoFile(string
sourceFile, string destinationFile, CreationDistribution
creationDistribution, int destinationFileAttributes, IntPtr
securityAttributes);
And with this i should copy the Metadata

DuplicateEncryptionInfoFile(@"C:\Temp\Source.xls",
@"C:\Temp\Target.xls", Win32.CreationDistribution.CreateNew,
Win32.FileAttributeNormal, IntPtr.Zero);
My problems are now how to get this objects?
- CreationDistribution in DLLImport
- Win32.CreationDistribution.CreateNew
- Win32.FileAttributeNormal

Or has anyone a working example how to copy the EFS encrypted userlist from
one file to another?

P.S.
the file should not be cleared...

thank you for any help
Volkan Senguel

Oct 27 '08 #1
0 849

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