Hi Ugo,

I'm putting together a test site using NCryptoki (trial edition) to talk to a Safenet Luna HSM.  I have created a class library to wrap the NCryptoki functionality that only exposes a couple of functions.

using System;
namespace CryptoTest.Library.Interfaces
{
  public interface ICryptoLibrary
  {
    string EncryptString(string stringToEncrypt);
    string UnencryptString(string stringToUnencrypt);
  }
}

The first couple of lines of the encrypt function are:

public string EncryptString(string stringToEncrypt)
{
  // Initialise Cryptoki library
  Cryptoki cryptoki = new Cryptoki("C:\\Program Files\\LunaSA\\cryptoki.dll");
  cryptoki.Initialize();

  ....

Using this library in a console or windows app is fine.  After dismissing the trial licence warning the application functions as expected.

However, in my asp.net app after dismissing the warning dialog a further dialog is presented with the warning:

The specified Cryproki library is not found. Please check the path.

The web app is .NET4 ASP.NET MVC3 C# running in IIS Express on a Win7 x64 Enteprise machine.  I have tried compiling the app for Any CPU, x86, x64 all to no avail.  I have added the runtime startup element to the web.config but I can't find the solution to getting it working.

Any thoughts would be appreciated.

Hi Ugo,

No, as far as I understand it IIS Express is a 32bit application. If I set the platform target of the web application to x64 I get

System.BadImageFormatException: Could not load file or assembly 'CryptoTest.Web' or one of its dependencies. An attempt was made to load a program with an incorrect format

So it looks like I'm stuck until I get permission to purchase a full licence that will work under IIS 7.5 with 64bit app pools.

A second question if I may? So far my test console and WinForms apps only work correctly if both of the NCryptoki assemblies are registered in the GAC. If they are not in the GAC and instead the application references the files to copy locally to the /bin then the application fails.  Is this correct?  Do I have to have the assemblies registered?