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//
// 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.
// 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.Runtime.InteropServices;
namespace System.Security.Cryptography {
#if NET_1_0
public class KeySizes {
#else
#if NET_2_0 && !NET_2_1
[ComVisible (true)]
#endif
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;
}
}
}
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