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//
// System.Security.Cryptography.CngAlgorithmGroup
//
// Authors:
// Sebastien Pouliot <sebastien@ximian.com>
//
// Copyright (C) 2008 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;
namespace System.Security.Cryptography {
// note: CNG stands for "Cryptography API: Next Generation"
[Serializable]
public sealed class CngAlgorithmGroup : IEquatable<CngAlgorithmGroup> {
private string group;
public CngAlgorithmGroup (string algorithmGroup)
{
if (algorithmGroup == null)
throw new ArgumentNullException ("algorithmGroup");
if (algorithmGroup.Length == 0)
throw new ArgumentException ("algorithmGroup");
group = algorithmGroup;
}
public string AlgorithmGroup {
get { return group; }
}
public bool Equals (CngAlgorithmGroup other)
{
return this == other;
}
public override bool Equals (object obj)
{
return Equals (obj as CngAlgorithmGroup);
}
public override int GetHashCode ()
{
return group.GetHashCode ();
}
public override string ToString ()
{
return group;
}
// static
private static CngAlgorithmGroup dh;
private static CngAlgorithmGroup dsa;
private static CngAlgorithmGroup ecdh;
private static CngAlgorithmGroup ecdsa;
private static CngAlgorithmGroup rsa;
public static CngAlgorithmGroup DiffieHellman {
get {
if (dh == null)
dh = new CngAlgorithmGroup ("DH");
return dh;
}
}
public static CngAlgorithmGroup Dsa {
get {
if (dsa == null)
dsa = new CngAlgorithmGroup ("DSA");
return dsa;
}
}
public static CngAlgorithmGroup ECDiffieHellman {
get {
if (ecdh == null)
ecdh = new CngAlgorithmGroup ("ECDH");
return ecdh;
}
}
public static CngAlgorithmGroup ECDsa {
get {
if (ecdsa == null)
ecdsa = new CngAlgorithmGroup ("ECDSA");
return ecdsa;
}
}
public static CngAlgorithmGroup Rsa {
get {
if (rsa == null)
rsa = new CngAlgorithmGroup ("RSA");
return rsa;
}
}
public static bool operator == (CngAlgorithmGroup left, CngAlgorithmGroup right)
{
if ((object)left == null)
return ((object)right == null);
if ((object)right == null)
return false;
return left.group == right.group;
}
public static bool operator != (CngAlgorithmGroup left, CngAlgorithmGroup right)
{
if ((object)left == null)
return ((object)right != null);
if ((object)right == null)
return true;
return left.group != right.group;
}
}
}
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