87 lines
2.2 KiB
C#
87 lines
2.2 KiB
C#
//
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// SecureBuffer.cs
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//
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// Author:
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// Martin Baulig <martin.baulig@xamarin.com>
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//
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// Copyright (c) 2014-2016 Xamarin Inc. (http://www.xamarin.com)
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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using System;
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namespace Mono.Security.Interface
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{
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public class SecureBuffer : SecretParameters, IBufferOffsetSize
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{
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byte[] buffer;
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public byte[] Buffer {
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get {
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CheckDisposed ();
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return buffer;
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}
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}
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public int Size {
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get {
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CheckDisposed ();
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return buffer != null ? buffer.Length : 0;
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}
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}
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int IBufferOffsetSize.Offset {
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get { return 0; }
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}
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public SecureBuffer (int size)
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{
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buffer = new byte [size];
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}
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public SecureBuffer (byte[] buffer)
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{
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this.buffer = buffer;
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}
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public byte[] StealBuffer ()
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{
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CheckDisposed ();
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var retval = this.buffer;
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this.buffer = null;
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return retval;
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}
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public static SecureBuffer CreateCopy (byte[] buffer)
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{
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var copy = new byte [buffer.Length];
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Array.Copy (buffer, copy, buffer.Length);
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return new SecureBuffer (copy);
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}
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protected override void Clear ()
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{
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if (buffer != null) {
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Array.Clear (buffer, 0, buffer.Length);
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buffer = null;
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}
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}
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}
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}
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