2 // RSAPKCS1KeyExchangeFormatter.cs: Handles PKCS#1 v.1.5 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)
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,
22 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
23 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
24 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
25 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
26 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
27 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
30 using System.Globalization;
31 using System.Runtime.InteropServices;
32 using Mono.Security.Cryptography;
34 namespace System.Security.Cryptography {
36 // LAMESPEC: There seems no way to select a hash algorithm. The default
37 // algorithm, is SHA1 because the class use the PKCS1MaskGenerationMethod -
38 // which default to SHA1.
40 public class RSAPKCS1KeyExchangeFormatter: AsymmetricKeyExchangeFormatter
43 private RandomNumberGenerator random;
45 public RSAPKCS1KeyExchangeFormatter ()
49 public RSAPKCS1KeyExchangeFormatter (AsymmetricAlgorithm key)
54 public RandomNumberGenerator Rng {
55 get { return random; }
56 set { random = value; }
59 public override string Parameters {
60 get { return "<enc:KeyEncryptionMethod enc:Algorithm=\"http://www.microsoft.com/xml/security/algorithm/PKCS1-v1.5-KeyEx\" xmlns:enc=\"http://www.microsoft.com/xml/security/encryption/v1.0\" />"; }
63 public override byte[] CreateKeyExchange (byte[] rgbData)
66 throw new ArgumentNullException ("rgbData");
68 string msg = Locale.GetText ("No RSA key specified");
69 throw new CryptographicUnexpectedOperationException (msg);
72 random = RandomNumberGenerator.Create (); // create default
73 return PKCS1.Encrypt_v15 (rsa, random, rgbData);
76 public override byte[] CreateKeyExchange (byte[] rgbData, Type symAlgType)
78 // documentation says that symAlgType is not used !?!
79 return CreateKeyExchange (rgbData);
82 private void SetRSAKey (AsymmetricAlgorithm key)
85 throw new ArgumentNullException ("key");
89 public override void SetKey (AsymmetricAlgorithm key)