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POProgrammatically installing certificate revocation list C#
 

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  1. POProgrammatically installing certificate revocation list C#
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    <p>I am using C#/WCF. I have a web service which shall be invoked by the client. This is the service definition:</p> <pre class="lang-xml prettyprint-override"><code>&lt;service behaviorConfiguration="WCFInterface.CommonBehavior" name="WCFInterface.Content"&gt; &lt;endpoint address="" binding="ws2007HttpBinding" bindingConfiguration="wsHttpUserName" contract="ABB.fTunes.WCFInterface.IContent"&gt; &lt;identity&gt; &lt;dns value="fTunesTestServer" /&gt; &lt;/identity&gt; &lt;/endpoint&gt; &lt;endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange" /&gt; &lt;/service&gt; </code></pre> <p>And this is the binding:</p> <pre class="lang-xml prettyprint-override"><code>&lt;ws2007HttpBinding&gt; &lt;binding name="wsHttpUserName"&gt; &lt;security mode="Message"&gt; &lt;message clientCredentialType="UserName"/&gt; &lt;/security&gt; &lt;/binding&gt; &lt;/ws2007HttpBinding&gt; </code></pre> <p>If I understand this correctly, the messages sent from server to client are encrypted with a certificate. Currently I am still working with developer certificates. I created a root certificate, a certificate revokation list and a key on the server. </p> <p>I am installing the client with Windows Installer and I have a custom install action to install the certificates. </p> <p>The following code shows how the certificates are added to the store</p> <pre><code>Stream manifestResourceStream = Assembly.GetExecutingAssembly().GetManifestResourceStream("ClientCertificates.MyRoot.cer"); byte[] buffer = new byte[((int)(manifestResourceStream.Length - 1L)) + 1]; manifestResourceStream.Read(buffer, 0, (int)manifestResourceStream.Length); manifestResourceStream.Close(); var cert = new X509Certificate2(buffer); var store = new X509Store(StoreName.Root, StoreLocation.LocalMachine); store.Open(OpenFlags.ReadWrite); store.Add(cert); store.Close(); /* // The CRL is also needed, no idea why manifestResourceStream = Assembly.GetExecutingAssembly().GetManifestResourceStream("ClientCertificates.MyRoot.crl"); buffer = new byte[((int)(manifestResourceStream.Length - 1L)) + 1]; manifestResourceStream.Read(buffer, 0, (int)manifestResourceStream.Length); manifestResourceStream.Close(); cert = new X509Certificate2(buffer); store = new X509Store(StoreName.Root, StoreLocation.LocalMachine); store.Open(OpenFlags.ReadWrite); store.Add(cert); store.Close(); */ // This is the key manifestResourceStream = Assembly.GetExecutingAssembly().GetManifestResourceStream("ClientCertificates.MyTestServer.cer"); buffer = new byte[((int)(manifestResourceStream.Length - 1L)) + 1]; manifestResourceStream.Read(buffer, 0, (int)manifestResourceStream.Length); manifestResourceStream.Close(); cert = new X509Certificate2(buffer); store = new X509Store(StoreName.My, StoreLocation.LocalMachine); store.Open(OpenFlags.ReadWrite); store.Add(cert); store.Close(); </code></pre> <p>I have now two behaviors: Installing the certificates work, but when I call the web service I get a <code>SecurityNegotiationException</code>. When I add the Certificate Revocation List manually, the communication with the server works. When I try to do it programmatically (see code above) it does not work. I get a "Could not find requested object" exception. </p> <p>I tried to use different stores but with no success. </p> <p>I have two questions: a) Why do I need the CRL on the client? b) If I need it, how can I install it programmatically? Where is my mistake above?</p> <p>Thanks for your help, Kay</p>
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