2 // RSAOAEPKeyExchangeDeformatter.cs - Handles OAEP keyex decryption.
5 // Sebastien Pouliot <sebastien@ximian.com>
7 // (C) 2002 Motus Technologies Inc. (http://www.motus.com)
8 // Copyright (C) 2004-2006 Novell, Inc (http://www.novell.com)
10 // Permission is hereby granted, free of charge, to any person obtaining
11 // a copy of this software and associated documentation files (the
12 // "Software"), to deal in the Software without restriction, including
13 // without limitation the rights to use, copy, modify, merge, publish,
14 // distribute, sublicense, and/or sell copies of the Software, and to
15 // permit persons to whom the Software is furnished to do so, subject to
16 // the following conditions:
18 // The above copyright notice and this permission notice shall be
19 // included in all copies or substantial portions of the Software.
21 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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23 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
24 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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30 using System.Globalization;
31 using System.Runtime.InteropServices;
32 using Mono.Security.Cryptography;
34 namespace System.Security.Cryptography {
39 public class RSAOAEPKeyExchangeDeformatter : AsymmetricKeyExchangeDeformatter {
44 public RSAOAEPKeyExchangeDeformatter ()
49 public RSAOAEPKeyExchangeDeformatter (AsymmetricAlgorithm key)
54 public override string Parameters {
59 public override byte[] DecryptKeyExchange (byte[] rgbData)
63 string msg = Locale.GetText ("No RSA key specified");
64 throw new CryptographicUnexpectedOperationException (msg);
67 SHA1 sha1 = SHA1.Create ();
68 byte[] result = PKCS1.Decrypt_OAEP (rsa, sha1, rgbData);
72 throw new CryptographicException (Locale.GetText ("OAEP decoding error."));
75 public override void SetKey (AsymmetricAlgorithm key)