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MD5.cs
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// created on 20/02/2003
// Npgsql.MD5.cs
//
//
// Permission to use, copy, modify, and distribute this software and its
// documentation for any purpose, without fee, and without a written
// agreement is hereby granted, provided that the above copyright notice
// and this paragraph and the following two paragraphs appear in all copies.
//
// IN NO EVENT SHALL THE NPGSQL DEVELOPMENT TEAM BE LIABLE TO ANY PARTY
// FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES,
// INCLUDING LOST PROFITS, ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS
// DOCUMENTATION, EVEN IF THE NPGSQL DEVELOPMENT TEAM HAS BEEN ADVISED OF
// THE POSSIBILITY OF SUCH DAMAGE.
//
// THE NPGSQL DEVELOPMENT TEAM SPECIFICALLY DISCLAIMS ANY WARRANTIES,
// INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
// AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
// ON AN "AS IS" BASIS, AND THE NPGSQL DEVELOPMENT TEAM HAS NO OBLIGATIONS
// TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
//
//
// System.Security.Cryptography MD5 Class implementation
//
// Authors:
// Matthew S. Ford (Matthew.S.Ford@Rose-Hulman.Edu)
// Sebastien Pouliot (spouliot@motus.com)
//
// Copyright 2001 by Matthew S. Ford.
// Portions (C) 2002 Motus Technologies Inc. (http://www.motus.com)
//
// Comment: Adapted to the Project from Mono CVS as Sebastien Pouliot suggested to enable
// support of Npgsql MD5 authentication in platforms which don't have support for MD5 algorithm.
//
//
//
namespace Npgsql
{
/// <summary>
/// Common base class for all derived MD5 implementations.
/// </summary>
internal abstract class MD5 : HashAlgorithm
{
/// <summary>
/// Called from constructor of derived class.
/// </summary>
// Why is it protected when others abstract hash classes are public ?
protected MD5()
{
HashSizeValue = 128;
}
/// <summary>
/// Creates the default derived class.
/// </summary>
public static MD5 Create()
{
//return Create ("System.Security.Cryptography.MD5");
return new MD5CryptoServiceProvider();
}
/*
// Commented out because it uses the CryptoConfig which can't be available in all
// platforms.
/// <summary>
/// Creates a new derived implementation.
/// </summary>
/// <param name="hashName">Specifies which derived class to create</param>
public static new MD5 Create (string hashName)
{
return (MD5) CryptoConfig.CreateFromName (hashName);
}*/
}
}