// System.Security.Cryptography.DSA.cs class implementation
//
// Authors:
-// Thomas Neidhart (tome@sbox.tugraz.at)
-// Sebastien Pouliot (spouliot@motus.com)
+// Thomas Neidhart (tome@sbox.tugraz.at)
+// Sebastien Pouliot (sebastien@ximian.com)
//
// Portions (C) 2002, 2003 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;
+using System.Globalization;
+using System.Runtime.InteropServices;
using System.Text;
using Mono.Xml;
+using Mono.Security;
// References:
// a. FIPS PUB 186-2: Digital Signature Standard (DSS)
namespace System.Security.Cryptography {
- /// <summary>
- /// Abstract base class for all implementations of the DSA algorithm
- /// </summary>
+#if NET_2_0
+ [ComVisible (true)]
+#endif
public abstract class DSA : AsymmetricAlgorithm {
+#if NET_2_0
+ // Constructor visibility fixed in Fx 2.0
+ protected DSA ()
+#else
// LAMESPEC: It says to derive new DSA implemenation from DSA class.
// Well it's aint gonna be easy this way.
// RSA constructor is public
- internal DSA () {}
-
+ internal DSA ()
+#endif
+ {
+ }
+
public static new DSA Create ()
{
return Create ("System.Security.Cryptography.DSA");
byte[] counter = GetNamedParam (se, "PgenCounter");
if (counter != null) {
byte[] counter4b = new byte [4]; // always 4 bytes
- Array.Copy (counter, 0, counter4b, 0, counter.Length);
- dsaParams.Counter = BitConverter.ToInt32 (counter4b, 0);
+ Buffer.BlockCopy (counter, 0, counter4b, 0, counter.Length);
+ dsaParams.Counter = BitConverterLE.ToInt32 (counter4b, 0);
}
ImportParameters (dsaParams);
}
sb.Append (Convert.ToBase64String (dsaParams.Y));
sb.Append( "</Y>");
- sb.Append ("<J>");
- sb.Append (Convert.ToBase64String (dsaParams.J));
- sb.Append ("</J>");
-
- sb.Append ("<Seed>");
- sb.Append (Convert.ToBase64String (dsaParams.Seed));
- sb.Append ("</Seed>");
-
- sb.Append ("<PgenCounter>");
- // the number of bytes is important (no matter == 0x00)
- byte[] inArr = BitConverter.GetBytes (dsaParams.Counter);
- int l = inArr.Length;
- while (inArr[l-1] == 0x00)
- l--;
- byte[] c = new byte[l];
- Array.Copy (inArr, 0, c, 0, l);
- sb.Append (Convert.ToBase64String (c));
- sb.Append ("</PgenCounter>");
+ if (dsaParams.J != null) {
+ // if J wasn't imported then it's not exported and neither
+ // is part of the XML output
+ sb.Append ("<J>");
+ sb.Append (Convert.ToBase64String (dsaParams.J));
+ sb.Append ("</J>");
+ }
+
+ if (dsaParams.Seed != null) {
+ sb.Append ("<Seed>");
+ sb.Append (Convert.ToBase64String (dsaParams.Seed));
+ sb.Append ("</Seed>");
+
+ sb.Append ("<PgenCounter>");
+ // the number of bytes is important (no matter == 0x00)
+ if (dsaParams.Counter != 0) {
+ byte[] inArr = BitConverterLE.GetBytes (dsaParams.Counter);
+ int l = inArr.Length;
+ while (inArr[l-1] == 0x00)
+ l--;
+
+ sb.Append (Convert.ToBase64String (inArr, 0, l));
+ } else {
+ sb.Append ("AA=="); // base64 encoded 0
+ }
+ sb.Append ("</PgenCounter>");
+ }
if (dsaParams.X != null) {
sb.Append ("<X>");
sb.Append (Convert.ToBase64String (dsaParams.X));
sb.Append ("</X>");
}
- else if (includePrivateParameters)
- throw new CryptographicException();
+ else if (includePrivateParameters) {
+#if NET_2_0
+ throw new ArgumentNullException ("X");
+#else
+ throw new CryptographicException (
+ Locale.GetText ("Missing private key informations"));
+#endif
+ }
sb.Append ("</DSAKeyValue>");
}
}
public abstract bool VerifySignature (byte[] rgbHash, byte[] rgbSignature);
-
- } // DSA
-
-} // System.Security.Cryptography
+ }
+}
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