2 // RSAPKCS1SignatureDeformatter.cs - Handles PKCS#1 v.1.5 signature decryption.
5 // Sebastien Pouliot <sebastien@ximian.com>
7 // (C) 2002, 2003 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 Mono.Security.Cryptography;
33 namespace System.Security.Cryptography {
35 public class RSAPKCS1SignatureDeformatter : AsymmetricSignatureDeformatter {
38 private string hashName;
40 public RSAPKCS1SignatureDeformatter ()
44 public RSAPKCS1SignatureDeformatter (AsymmetricAlgorithm key)
49 public override void SetHashAlgorithm (string strName)
52 throw new ArgumentNullException ("strName");
56 public override void SetKey (AsymmetricAlgorithm key)
60 throw new ArgumentNullException ("key");
62 // 1.0/1.1 accepted null without an ArgumentNullException!
67 public override bool VerifySignature (byte[] rgbHash, byte[] rgbSignature)
70 throw new CryptographicUnexpectedOperationException (
71 Locale.GetText ("No public key available."));
73 if (hashName == null) {
74 throw new CryptographicUnexpectedOperationException (
75 Locale.GetText ("Missing hash algorithm."));
78 throw new ArgumentNullException ("rgbHash");
79 if (rgbSignature == null)
80 throw new ArgumentNullException ("rgbSignature");
82 return PKCS1.Verify_v15 (rsa, HashAlgorithm.Create (hashName), rgbHash, rgbSignature);