One of the constructors for a WindowsIdentity allows you to pass the UPN of
a user and have an identity created for that user. If your permissions are
setup correctly then the system is supposed to return you a delegatable
token that you can use for impersonation. I have been ...

I have a .Net app running on a Win2K3 server, with .Net framework
1.1.4322. On a separate Win2K3 server, were are running SQL 2000, with
no service packs (don't tell me about it - its a customer requirement).
The .Net app connects using a SQL login account, which has been granted

I have a client/server application that uses TCP socket based
communication, and right now I'm using my own ID/password scheme.
Clients send an ID and password to the server, which authenticates them
against a table in a local SQL database.  This requires users to keep

I have previosly developed some small apps in Visual Studio .NET 2003
and MS SQL server.
Am now about to develop a secure webapp in .NET to be used on our
intranet, and I'd appreciate some input.

I need to check the current principal's read-, write- and full control
access to a given directory without using try-catch.
Any suggestions will be highly appreciated.
Best regards

I'm needing to use FIPS 140-2 validated AES encryption with in .NET 1.1.  I
have gotten conflicting reports regarding the validation status of this
particular class.  Can someone please verify whether or not the Rijndael
class of System.Security.Cryptography is validated?  ...

How can I programmatically issue X.509 certificates for my users? I
mean people give my program their public key and other characteristics
of themselves (like name, address, etc) and the program gives them a
digital certificate (*.cer,*.der, etc file) which is signed by my

I'm trying to create a new codegroup of type strong name usign the
caspol utility I get an "ERROR: Unable to create specified class."
error. The command line is:
caspol -en -ag All_Code -custom sec3.xml FullTrust

I checked in the .net configuration wizard(Create Deployment Package in
Runtime Security Policy) all its asking is a name of the file.
and there is no help avilable.
Can some one help me on this.

  I have asimple app as below
using System;
using System.IO;
using System.Security;

I have been struggling with this for a couple of weeks.
I have a digital certificate installed in my certificate collection store on
my local computer.  The site I am trying to post to also has our certificate
installed is said it is ready to recieve transactions.  I have created ...

I am attempting to write a application using .net remoting. i would like to
validate that the client code has not been tampered with. From my
understanding there is a way to validate the client's assembly, possibly
using digital signing. I understand how to create the hash values ...

The following code gives:
An unhandled exception of type 'System.InvalidOperationException' occurred
in System.Security.dll
Additional information: The recipient certificate is not specified.

I have the following .Net code:
Microsoft.Web.Services.Security.X509.X509Certificate certificate1 =
Microsoft.Web.Services.Security.X509.X509Certificate.CreateCertFromFile(
certPath );

I'vr written a function which checks if a use has rights to write a file.
This function uses WindowsPrincipal.IsInRole to check if the user is part of
a role defined on the file acl. Now I want ot change the function to also
check is the system account (NT AUTHORITY\SYSTEM) has ...