2 // System.Security.Cryptography KeySizes Class implementation
5 // Matthew S. Ford (Matthew.S.Ford@Rose-Hulman.Edu)
6 // Ben Maurer (bmaurer@users.sf.net)
7 // Sebastien Pouliot (sebastien@ximian.com)
9 // Copyright 2001 by Matthew S. Ford.
10 // Copyright (C) 2004-2005 Novell, Inc (http://www.novell.com)
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14 // "Software"), to deal in the Software without restriction, including
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17 // permit persons to whom the Software is furnished to do so, subject to
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32 using System.Runtime.InteropServices;
34 namespace System.Security.Cryptography {
37 public class KeySizes {
42 public sealed class KeySizes {
46 private int _skipSize;
48 public KeySizes (int minSize, int maxSize, int skipSize)
56 get { return _maxSize; }
60 get { return _minSize; }
64 get { return _skipSize; }
67 internal bool IsLegal (int keySize)
69 int ks = keySize - MinSize;
70 bool result = ((ks >= 0) && (keySize <= MaxSize));
71 return ((SkipSize == 0) ? result : (result && (ks % SkipSize == 0)));
74 internal static bool IsLegalKeySize (KeySizes[] legalKeys, int size)
76 foreach (KeySizes legalKeySize in legalKeys) {
77 if (legalKeySize.IsLegal (size))