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//
// NOTE: DO NOT EDIT - This file was automatically generated using
// /mcs/class/System.Core/tools/hashwrap.cs
//
// System.Security.Cryptography.SHA256CryptoServiceProvider
//
// 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.
//
namespace System.Security.Cryptography {
// this is a wrapper around SHA256Managed
// see README.CNG and README.CSP for more details
public sealed class SHA256CryptoServiceProvider : SHA256 {
static byte[] Empty = new byte [0];
private SHA256 hash;
[SecurityCritical]
public SHA256CryptoServiceProvider ()
{
// note: we don't use SHA256.Create since CryptoConfig could,
// if set to use this class, result in a endless recursion
hash = new SHA256Managed ();
}
[SecurityCritical]
public override void Initialize ()
{
hash.Initialize ();
}
[SecurityCritical]
protected override void HashCore (byte[] array, int ibStart, int cbSize)
{
hash.TransformBlock (array, ibStart, cbSize, null, 0);
}
[SecurityCritical]
protected override byte[] HashFinal ()
{
hash.TransformFinalBlock (Empty, 0, 0);
HashValue = hash.Hash;
return HashValue;
}
[SecurityCritical]
protected override void Dispose (bool disposing)
{
(hash as IDisposable).Dispose ();
base.Dispose (disposing);
}
}
}
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