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//
// System.Security.Cryptography.CngAlgorithm
//
// 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 CngAlgorithm : IEquatable<CngAlgorithm> {
private string algo;
public CngAlgorithm (string algorithm)
{
if (algorithm == null)
throw new ArgumentNullException ("algorithm");
if (algorithm.Length == 0)
throw new ArgumentException ("algorithm");
algo = algorithm;
}
public string Algorithm {
get { return algo; }
}
public bool Equals (CngAlgorithm other)
{
if (other == null)
return false;
return algo == other.algo;
}
public override bool Equals (object obj)
{
return Equals (obj as CngAlgorithm);
}
public override int GetHashCode ()
{
return algo.GetHashCode ();
}
public override string ToString ()
{
return algo;
}
// static
static CngAlgorithm dh256;
static CngAlgorithm dh384;
static CngAlgorithm dh521;
static CngAlgorithm dsa256;
static CngAlgorithm dsa384;
static CngAlgorithm dsa521;
static CngAlgorithm md5;
static CngAlgorithm sha1;
static CngAlgorithm sha256;
static CngAlgorithm sha384;
static CngAlgorithm sha512;
public static CngAlgorithm ECDiffieHellmanP256 {
get {
if (dh256 == null)
dh256 = new CngAlgorithm ("ECDH_P256");
return dh256;
}
}
public static CngAlgorithm ECDiffieHellmanP384 {
get {
if (dh384 == null)
dh384 = new CngAlgorithm ("ECDH_P384");
return dh384;
}
}
public static CngAlgorithm ECDiffieHellmanP521 {
get {
if (dh521 == null)
dh521 = new CngAlgorithm ("ECDH_P521");
return dh521;
}
}
public static CngAlgorithm ECDsaP256 {
get {
if (dsa256 == null)
dsa256 = new CngAlgorithm ("ECDSA_P256");
return dsa256;
}
}
public static CngAlgorithm ECDsaP384 {
get {
if (dsa384 == null)
dsa384 = new CngAlgorithm ("ECDSA_P384");
return dsa384;
}
}
public static CngAlgorithm ECDsaP521 {
get {
if (dsa521 == null)
dsa521 = new CngAlgorithm ("ECDSA_P521");
return dsa521;
}
}
public static CngAlgorithm MD5 {
get {
if (md5 == null)
md5 = new CngAlgorithm ("MD5");
return md5;
}
}
public static CngAlgorithm Sha1 {
get {
if (sha1 == null)
sha1 = new CngAlgorithm ("SHA1");
return sha1;
}
}
public static CngAlgorithm Sha256 {
get {
if (sha256 == null)
sha256 = new CngAlgorithm ("SHA256");
return sha256;
}
}
public static CngAlgorithm Sha384 {
get {
if (sha384 == null)
sha384 = new CngAlgorithm ("SHA384");
return sha384;
}
}
public static CngAlgorithm Sha512 {
get {
if (sha512 == null)
sha512 = new CngAlgorithm ("SHA512");
return sha512;
}
}
public static bool operator == (CngAlgorithm left, CngAlgorithm right)
{
if ((object)left == null)
return ((object)right == null);
if ((object)right == null)
return false;
return left.algo == right.algo;
}
public static bool operator != (CngAlgorithm left, CngAlgorithm right)
{
if ((object)left == null)
return ((object)right != null);
if ((object)right == null)
return true;
return left.algo != right.algo;
}
}
}
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