New project to interface with the Microsoft Windows SSPI integration authentication API.

NativeMethods.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Runtime.InteropServices;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace NSspi
+{
+    public class NativeMethods
+    {
+        /*
+        SECURITY_STATUS sResult = AcquireCredentialsHandle(
+		        NULL,											// [in] name of principal. NULL = principal of current security context
+		        pszPackageName,									// [in] name of package
+		        fCredentialUse,									// [in] flags indicating use.
+		        NULL,											// [in] pointer to logon identifier.  NULL = we're not specifying the id of another logon session
+		        NULL,											// [in] package-specific data.  NULL = default credentials for security package
+		        NULL,											// [in] pointer to GetKey function.  NULL = we're not using a callback to retrieve the credentials
+		        NULL,											// [in] value to pass to GetKey
+		        this->credentialHandle,							// [out] credential handle (this must be already allocated)
+		        &tsExpiry										// [out] lifetime of the returned credentials
+        );
+        
+        SECURITY_STATUS SEC_Entry AcquireCredentialsHandle(
+              _In_   SEC_CHAR *pszPrincipal,
+              _In_   SEC_CHAR *pszPackage,
+              _In_   ULONG fCredentialUse,
+              _In_   PLUID pvLogonID,
+              _In_   PVOID pAuthData,
+              _In_   SEC_GET_KEY_FN pGetKeyFn,
+              _In_   PVOID pvGetKeyArgument,
+              _Out_  PCredHandle phCredential,
+              _Out_  PTimeStamp ptsExpiry
+            );
+        */
+
+        [DllImport( "Secur32.dll", CallingConvention = CallingConvention.Winapi, SetLastError=false)]
+        public extern int AcquireCredentialHandle(
+            string principleName,
+            string packageName,
+            int credentialUse,
+            IntPtr loginId,
+            IntPtr packageData,
+            IntPtr getKeyFunc,
+            IntPtr getKeyData,
+            IntPtr credentialHandle,
+            long expiry
+        );
+    }
+}