2 // RSAOAEPKeyExchangeFormatter.cs - Handles OAEP keyex encryption.
5 // Sebastien Pouliot <sebastien@ximian.com>
7 // (C) 2002 Motus Technologies Inc. (http://www.motus.com)
8 // Copyright (C) 2004-2005 Novell, Inc (http://www.novell.com)
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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,
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15 // permit persons to whom the Software is furnished to do so, subject to
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18 // The above copyright notice and this permission notice shall be
19 // included in all copies or substantial portions of the Software.
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30 using System.Globalization;
31 using System.Runtime.InteropServices;
32 using Mono.Security.Cryptography;
34 namespace System.Security.Cryptography {
37 public class RSAOAEPKeyExchangeFormatter : AsymmetricKeyExchangeFormatter {
40 private RandomNumberGenerator random;
43 public RSAOAEPKeyExchangeFormatter ()
48 public RSAOAEPKeyExchangeFormatter (AsymmetricAlgorithm key)
53 public byte[] Parameter {
55 set { param = value; }
58 public override string Parameters {
62 public RandomNumberGenerator Rng {
63 get { return random; }
64 set { random = value; }
67 public override byte[] CreateKeyExchange (byte[] rgbData)
70 random = RandomNumberGenerator.Create (); // create default
72 string msg = Locale.GetText ("No RSA key specified");
73 throw new CryptographicUnexpectedOperationException (msg);
75 SHA1 sha1 = SHA1.Create ();
76 return PKCS1.Encrypt_OAEP (rsa, sha1, random, rgbData);
79 public override byte[] CreateKeyExchange (byte[] rgbData, Type symAlgType)
81 // documentation says that symAlgType is not used !?!
82 return CreateKeyExchange (rgbData);
85 public override void SetKey (AsymmetricAlgorithm key)