source: trunk/CrypPlugins/MD5/MD5.cs @ 853

Last change on this file since 853 was 853, checked in by pretzsch, 12 years ago

+ MD5 plugin: Added Presentation helper classes

File size: 17.5 KB
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189   Copyright [2008] [Sebastian Przybylski, University of Siegen]
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203
204using System;
205using System.Collections.Generic;
206using System.Linq;
207using System.Text;
208using System.IO;
209using System.Security.Cryptography;
210using Cryptool.PluginBase;
211using System.Windows.Controls;
212using System.ComponentModel;
213using System.Windows.Documents;
214using System.Windows.Markup;
215using System.Windows;
216using Cryptool.PluginBase.Cryptography;
217using Cryptool.PluginBase.IO;
218using System.Runtime.CompilerServices;
219using Cryptool.PluginBase.Miscellaneous;
220using System.Runtime.Remoting.Contexts;
221
222namespace Cryptool.MD5
223{
224    [Author("Sebastian Przybylski", "sebastian@przybylski.org", "Uni-Siegen", "http://www.uni-siegen.de")]
225    [PluginInfo(false, "MD5", "MD5 hash function", "MD5/DetailedDescription/Description.xaml", "MD5/MD5.png")]
226    [EncryptionType(EncryptionType.Classic)]
227    public class MD5 : ICryptographicHash
228    {
229        #region Private variables
230        private MD5Settings settings;
231        private CryptoolStream inputData;
232        private byte[] outputData;
233        private List<CryptoolStream> listCryptoolStreamsOut = new List<CryptoolStream>();
234        #endregion
235
236        #region Public interface
237        public MD5()
238        {
239            this.settings = new MD5Settings();
240        }
241
242        public ISettings Settings
243        {
244         
245            get { return this.settings; }
246         
247            set { this.settings = (MD5Settings)value; }
248        }
249
250        [PropertyInfo(Direction.InputData, "Input stream", "Input data to be hashed", "", true, false, DisplayLevel.Beginner, QuickWatchFormat.Hex, null)]
251        public CryptoolStream InputData
252        {
253         
254            get 
255            {
256              if (inputData != null)
257              {
258                CryptoolStream cs = new CryptoolStream();
259                cs.OpenRead(inputData.FileName);
260                listCryptoolStreamsOut.Add(cs);
261                return cs;
262              }
263              return null;   
264            }
265         
266            set 
267            { 
268              this.inputData = value;
269              OnPropertyChanged("InputData");
270            }
271        }
272
273        [PropertyInfo(Direction.OutputData, "Hashed value", "Output data of the hashed value as Stream", "", false, false, DisplayLevel.Beginner, QuickWatchFormat.Hex, null)]
274        public CryptoolStream OutputDataStream
275        {
276         
277          get 
278          {           
279            if (outputData != null)
280            {
281              CryptoolStream stream = new CryptoolStream();             
282              listCryptoolStreamsOut.Add(stream);
283              stream.OpenRead(outputData);
284              GuiLogMessage("Got request for hash (Stream)...", NotificationLevel.Debug);
285              return stream;
286            }
287            return null; ;
288          }
289          set { } // readonly
290        }
291
292        [PropertyInfo(Direction.OutputData, "Hashed value", "Output data of the hashed value as byte array", "", false, false, DisplayLevel.Beginner, QuickWatchFormat.Hex, null)]
293        public byte[] OutputData
294        {
295         
296            get 
297            {
298              GuiLogMessage("Got request for hash (Byte Array)...", NotificationLevel.Debug);
299              return this.outputData; 
300            }
301         
302            set 
303            { 
304              outputData = value;             
305              OnPropertyChanged("OutputData");
306              OnPropertyChanged("OutputDataStream");             
307            }
308        }
309       
310        public void Execute()
311        {
312          ProgressChanged(0.5, 1.0);
313          if (inputData != null)
314          {
315            System.Security.Cryptography.MD5 md5Hash = System.Security.Cryptography.MD5.Create();
316            byte[] data = md5Hash.ComputeHash((Stream)inputData);
317
318            GuiLogMessage("Hash created.", NotificationLevel.Info);
319            ProgressChanged(1, 1);           
320            OutputData = data;           
321          }
322          else
323          {           
324              GuiLogMessage("Received null value for CryptoolStream.", NotificationLevel.Warning);           
325          }
326          ProgressChanged(1.0, 1.0);
327        }
328
329       
330        public void Initialize()
331        {           
332        }
333       
334        public void Dispose()
335        {
336          if (inputData != null)
337          {
338            inputData.Close();
339            inputData = null;
340          }
341          foreach (CryptoolStream stream in listCryptoolStreamsOut)
342          {
343            stream.Close();
344          }
345        }
346        #endregion
347
348        #region IPlugin Members
349
350        public UserControl Presentation
351        {
352          get { return null; }
353        }
354
355        public UserControl QuickWatchPresentation
356        {
357         
358          get { return null; }
359        }
360       
361        public void Stop()
362        {
363
364        }
365       
366        public void PostExecution()
367        {
368            Dispose();
369        }
370       
371        public void PreExecution()
372        {
373            Dispose();
374        }
375
376        #endregion
377
378        #region INotifyPropertyChanged Members
379
380        public event PropertyChangedEventHandler PropertyChanged;
381
382        public void OnPropertyChanged(string name)
383        {
384          EventsHelper.PropertyChanged(PropertyChanged, this, new PropertyChangedEventArgs(name));
385        }
386
387        #endregion
388
389        #region IPlugin Members
390
391#pragma warning disable 67
392                                public event StatusChangedEventHandler OnPluginStatusChanged;
393#pragma warning restore
394
395        public event GuiLogNotificationEventHandler OnGuiLogNotificationOccured;
396        private void GuiLogMessage(string message, NotificationLevel logLevel)
397        {
398          EventsHelper.GuiLogMessage(OnGuiLogNotificationOccured, this, new GuiLogEventArgs(message, this, logLevel));
399        }
400
401        public event PluginProgressChangedEventHandler OnPluginProgressChanged;
402        private void ProgressChanged(double value, double max)
403        {
404          EventsHelper.ProgressChanged(OnPluginProgressChanged, this, new PluginProgressEventArgs(value, max));
405        }
406       
407        public void Pause()
408        {         
409        }
410
411        #endregion
412    }
413}
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