[docs] Import of Microsoft BCL Documentation.

[mono.git] / mcs / class / corlib / System.Security.Cryptography / RSAOAEPKeyExchangeDeformatter.cs

diff --git a/mcs/class/corlib/System.Security.Cryptography/RSAOAEPKeyExchangeDeformatter.cs b/mcs/class/corlib/System.Security.Cryptography/RSAOAEPKeyExchangeDeformatter.cs
index 4b3962a3cab4c6792ce4ad762943c4634679bf6d..ecb8f2209e0d45a746c1a93eaf4aec21e3cc5c09 100644 (file)
--- a/mcs/class/corlib/System.Security.Cryptography/RSAOAEPKeyExchangeDeformatter.cs
+++ b/mcs/class/corlib/System.Security.Cryptography/RSAOAEPKeyExchangeDeformatter.cs
@@ -2,53 +2,74 @@
 // RSAOAEPKeyExchangeDeformatter.cs - Handles OAEP keyex decryption.
 //
 // Author:
-//     Sebastien Pouliot (spouliot@motus.com)
+//     Sebastien Pouliot <sebastien@ximian.com>
 //
 // (C) 2002 Motus Technologies Inc. (http://www.motus.com)
+// Copyright (C) 2004-2006 Novell, Inc (http://www.novell.com)
+//
+// Permission is hereby granted, free of charge, to any person obtaining
+// a copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to
+// permit persons to whom the Software is furnished to do so, subject to
+// the following conditions:
+// 
+// The above copyright notice and this permission notice shall be
+// included in all copies or substantial portions of the Software.
+// 
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 //
 
-using System;
+using System.Globalization;
+using System.Runtime.InteropServices;
+using Mono.Security.Cryptography;
 
 namespace System.Security.Cryptography { 
 
-public class RSAOAEPKeyExchangeDeformatter : AsymmetricKeyExchangeDeformatter {
-
-       protected RSA rsa;
-       protected string param;
-
-       public RSAOAEPKeyExchangeDeformatter ()
-       {
-               rsa = null;
-       }
-
-       public RSAOAEPKeyExchangeDeformatter (AsymmetricAlgorithm key) 
-       {
-               SetKey (key);
-       }
-
-       public override string Parameters {
-               get { return param; }
-               set { param = value; }
-       }
-
-       public override byte[] DecryptKeyExchange (byte[] rgbData) 
-       {
-               if (rsa == null)
-                       throw new CryptographicException ();
-               byte[] mask = rsa.DecryptValue (rgbData);
-               byte[] secret = null;
-               // TODO retreive key from mask
-               return secret;
-       }
+       [ComVisible (true)]
+       public class RSAOAEPKeyExchangeDeformatter : AsymmetricKeyExchangeDeformatter {
+       
+               private RSA rsa;
+//             private string param;
+       
+               public RSAOAEPKeyExchangeDeformatter ()
+               {
+               }
+       
+               public RSAOAEPKeyExchangeDeformatter (AsymmetricAlgorithm key) 
+               {
+                       SetKey (key);
+               }
+       
+               public override string Parameters {
+                       get { return null; }
+                       set { ; }
+               }
+       
+               public override byte[] DecryptKeyExchange (byte[] rgbData) 
+               {
+                       if (rsa == null) {
+                               string msg = Locale.GetText ("No RSA key specified");
+                               throw new CryptographicUnexpectedOperationException (msg);
+                       }
+                       SHA1 sha1 = SHA1.Create ();
+                       byte[] result = PKCS1.Decrypt_OAEP (rsa, sha1, rgbData);
+                       if (result != null)
+                               return result;
 
-       public override void SetKey (AsymmetricAlgorithm key) 
-       {
-               if (key is RSA) {
+                       throw new CryptographicException (Locale.GetText ("OAEP decoding error."));
+               }
+       
+               public override void SetKey (AsymmetricAlgorithm key) 
+               {
                        rsa = (RSA)key;
                }
-               else
-                       throw new CryptographicException ();
        }
 }
-
-}