X-Git-Url: http://wien.tomnetworks.com/gitweb/?a=blobdiff_plain;f=mcs%2Fclass%2Fcorlib%2FSystem.Security.Cryptography%2FKeySizes.cs;h=6594d2a7661e5a50e67a4732b48ae45f8232f974;hb=00e39cb7f7417ed61f0406ce201accab3274e875;hp=6bdb2b658f3c1e92613708e2c225f548d7483500;hpb=77f0cd8d7383c230517fdda0ed1249c5f372ca1a;p=mono.git

diff --git a/mcs/class/corlib/System.Security.Cryptography/KeySizes.cs b/mcs/class/corlib/System.Security.Cryptography/KeySizes.cs
index 6bdb2b658f3..6594d2a7661 100644
--- a/mcs/class/corlib/System.Security.Cryptography/KeySizes.cs
+++ b/mcs/class/corlib/System.Security.Cryptography/KeySizes.cs
@@ -1,61 +1,82 @@
-//
-// System.Security.Cryptography KeySizes Class implementation
-//
-// Author:
-//   Matthew S. Ford (Matthew.S.Ford@Rose-Hulman.Edu)
-//
-// Copyright 2001 by Matthew S. Ford.
-//
-
-
-namespace System.Security.Cryptography {
-	
-	/// <summary>
-	/// This class represents valid ranges of key sizes for ciphers.  It is also used to represent block sizes in the same fashion for block ciphers.
-	/// </summary>
-	public class KeySizes {
-		private int _maxSize;
-		private int _minSize;
-		private int _skipSize;
-
-		/// <summary>
-		/// Creates a new KeySizes object.
-		/// </summary>
-		/// <param name="minSize">The minimum size key allowed for this cipher in bits.</param>
-		/// <param name="maxSize">The maximum size key allowed for this cipher in bits.</param>
-		/// <param name="skipSize">The jump/skip between the valid key sizes in bits.</param>
-		public KeySizes (int minSize, int maxSize, int skipSize) {
-			_maxSize = maxSize;
-			_minSize = minSize;
-			_skipSize = skipSize;
-		}
-		
-		/// <summary>
-		/// Returns the maximum valid key size in bits;
-		/// </summary>
-		public int MaxSize {
-			get {
-				return _maxSize;
-			}
-		}
-		
-		/// <summary>
-		/// Returns the minimum valid key size in bits;
-		/// </summary>
-		public int MinSize {
-			get {
-				return _minSize;
-			}
-		}
-		
-		/// <summary>
-		/// Returns the skip between valid key sizes in bits;
-		/// </summary>
-		public int SkipSize {
-			get {
-				return _skipSize;
-			}
-		}		
-	}
-}
-
+//
+// System.Security.Cryptography KeySizes Class implementation
+//
+// Authors:
+//	Matthew S. Ford (Matthew.S.Ford@Rose-Hulman.Edu)
+//	Ben Maurer (bmaurer@users.sf.net)
+//	Sebastien Pouliot (sebastien@ximian.com)
+//
+// Copyright 2001 by Matthew S. Ford.
+// (C) 2004 Novell (http://www.novell.com)
+//
+
+//
+// Copyright (C) 2004 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.
+//
+
+namespace System.Security.Cryptography {
+	
+#if NET_1_0
+	public class KeySizes {
+#else
+	public sealed class KeySizes {
+#endif
+		private int _maxSize;
+		private int _minSize;
+		private int _skipSize;
+
+		public KeySizes (int minSize, int maxSize, int skipSize) 
+		{
+			_maxSize = maxSize;
+			_minSize = minSize;
+			_skipSize = skipSize;
+		}
+		
+		public int MaxSize {
+			get { return _maxSize; }
+		}
+		
+		public int MinSize {
+			get { return _minSize; }
+		}
+		
+		public int SkipSize {
+			get { return _skipSize; }
+		}
+	
+		internal bool IsLegal (int keySize) 
+		{
+			int ks = keySize - MinSize;
+			bool result = ((ks >= 0) && (keySize <= MaxSize));
+			return ((SkipSize == 0) ? result : (result && (ks % SkipSize == 0)));
+		}
+
+		internal static bool IsLegalKeySize (KeySizes[] legalKeys, int size) 
+		{
+			foreach (KeySizes legalKeySize in legalKeys) {
+				if (legalKeySize.IsLegal (size)) 
+					return true;
+			}
+			return false;
+		}
+	}
+}