-//\r
-// System.Security.Cryptography DSASignatureFormatter.cs\r
-//\r
-// Author:\r
-// Thomas Neidhart (tome@sbox.tugraz.at)\r
-//\r
-\r
-using System;\r
-\r
-namespace System.Security.Cryptography\r
-{\r
-\r
- /// <summary>\r
- /// DSA Signature Formatter\r
- /// </summary>\r
- public class DSASignatureFormatter : AsymmetricSignatureFormatter\r
- {\r
- \r
- public DSASignatureFormatter() \r
- {\r
- // TODO: implement\r
- }\r
- \r
- public DSASignatureFormatter(AsymmetricAlgorithm key)\r
- {\r
- // TODO: implement\r
- }\r
- \r
- public override byte[] CreateSignature(byte[] rgbHash)\r
- {\r
- // TODO: implement\r
- return null;\r
- }\r
- \r
- public override void SetHashAlgorithm(string strName)\r
- {\r
- // TODO: implement\r
- }\r
- \r
- public override void SetKey(AsymmetricAlgorithm key)\r
- {\r
- // TODO: implement\r
- }\r
- \r
- } // DSASignatureFormatter\r
- \r
-} // System.Security.Cryptography\r
+//
+// System.Security.Cryptography DSASignatureFormatter.cs
+//
+// Authors:
+// Thomas Neidhart (tome@sbox.tugraz.at)
+// Sebastien Pouliot (sebastien@ximian.com)
+//
+// Portions (C) 2002 Motus Technologies Inc. (http://www.motus.com)
+// Copyright (C) 2004-2005 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.Globalization;
+using System.Runtime.InteropServices;
+
+namespace System.Security.Cryptography {
+
+#if NET_2_0
+ [ComVisible (true)]
+#endif
+ public class DSASignatureFormatter : AsymmetricSignatureFormatter {
+
+ private DSA dsa;
+
+ public DSASignatureFormatter () : base ()
+ {
+ }
+
+ public DSASignatureFormatter (AsymmetricAlgorithm key) : base ()
+ {
+ SetKey (key);
+ }
+
+ public override byte[] CreateSignature (byte[] rgbHash)
+ {
+ if (dsa == null) {
+ throw new CryptographicUnexpectedOperationException (
+ Locale.GetText ("missing key"));
+ }
+
+ return dsa.CreateSignature (rgbHash);
+ }
+
+ public override void SetHashAlgorithm (string strName)
+ {
+ if (strName == null)
+ throw new ArgumentNullException ("strName");
+
+ try {
+ // just to test, we don't need the object
+ SHA1.Create (strName);
+ }
+ catch (InvalidCastException) {
+ throw new CryptographicUnexpectedOperationException (
+ Locale.GetText ("DSA requires SHA1"));
+ }
+ }
+
+ public override void SetKey (AsymmetricAlgorithm key)
+ {
+ if (key != null) {
+ // this will throw a InvalidCastException if this isn't
+ // a DSA keypair
+ dsa = (DSA) key;
+ }
+#if NET_2_0
+ else
+ throw new ArgumentNullException ("key");
+#else
+ // null is accepted in 1.0/1.1
+#endif
+ }
+ }
+}