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source: branches/Async/HeuristicLab.ExtLibs/HeuristicLab.EPPlus/3.1.3/EPPlus-3.1.3/ExcelEncryption.cs @ 13042

Last change on this file since 13042 was 9580, checked in by sforsten, 12 years ago

#1730:

  • added SymbolicDataAnalysisExpressionExcelFormatter
  • changed modifiers in SymbolicExpressionTreeChart of methods SaveImageAsBitmap and SaveImageAsEmf to public
  • added menu item ExportSymbolicSolutionToExcelMenuItem to export a symbolic solution to an excel file
  • added EPPlus-3.1.3 to ExtLibs
File size: 4.5 KB
Line 
1/*******************************************************************************
2 * You may amend and distribute as you like, but don't remove this header!
3 *
4 * EPPlus provides server-side generation of Excel 2007/2010 spreadsheets.
5 * See http://www.codeplex.com/EPPlus for details.
6 *
7 * Copyright (C) 2011  Jan Källman
8 *
9 * This library is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU Lesser General Public
11 * License as published by the Free Software Foundation; either
12 * version 2.1 of the License, or (at your option) any later version.
13
14 * This library is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 
17 * See the GNU Lesser General Public License for more details.
18 *
19 * The GNU Lesser General Public License can be viewed at http://www.opensource.org/licenses/lgpl-license.php
20 * If you unfamiliar with this license or have questions about it, here is an http://www.gnu.org/licenses/gpl-faq.html
21 *
22 * All code and executables are provided "as is" with no warranty either express or implied.
23 * The author accepts no liability for any damage or loss of business that this product may cause.
24 *
25 * Code change notes:
26 *
27 ***************************************************************************************
28 * This class is created with the help of the MS-OFFCRYPTO PDF documentation... http://msdn.microsoft.com/en-us/library/cc313071(office.12).aspx
29 * Decrypytion library for Office Open XML files(Lyquidity) and Sminks very nice example
30 * on "Reading compound documents in c#" on Stackoverflow. Many thanks!
31 ***************************************************************************************
32 * 
33 * Code change notes:
34 *
35 * Author             Change            Date
36 *******************************************************************************
37 * Jan Källman    Added   10-AUG-2010
38 * Jan Källman    License changed GPL-->LGPL 2011-12-27
39 *******************************************************************************/
40using System;
41using System.Collections.Generic;
42using System.Text;
43
44namespace OfficeOpenXml
45{
46    /// <summary>
47    /// Encryption Algorithm
48    /// </summary>
49    public enum EncryptionAlgorithm
50    {
51        /// <summary>
52        /// 128-bit AES. Default
53        /// </summary>
54        AES128,
55        /// <summary>
56        /// 192-bit AES.
57        /// </summary>
58        AES192,
59        /// <summary>
60        /// 256-bit AES.
61        /// </summary>
62        AES256
63    }
64    /// <summary>
65    /// How and if the workbook is encrypted
66    ///<seealso cref="ExcelProtection"/>
67    ///<seealso cref="ExcelSheetProtection"/>
68    /// </summary>
69    public class ExcelEncryption
70    {
71        /// <summary>
72        /// Constructor
73        /// </summary>
74        internal ExcelEncryption()
75        {
76            Algorithm = EncryptionAlgorithm.AES128;
77        }
78        /// <summary>
79        /// Constructor
80        /// </summary>
81        /// <param name="encryptionAlgorithm">Algorithm used to encrypt the package. Default is AES128</param>
82        internal ExcelEncryption(EncryptionAlgorithm encryptionAlgorithm)
83        {
84            Algorithm = encryptionAlgorithm;
85        }       
86        bool _isEncrypted = false;
87        /// <summary>
88        /// Is the package encrypted
89        /// </summary>
90        public bool IsEncrypted
91        {
92            get
93            {
94                return _isEncrypted;
95            }
96            set
97            {
98                _isEncrypted = value;
99                if (_isEncrypted)
100                {
101                    if (_password == null) _password = "";
102                }
103                else
104                {
105                    _password = null;
106                }
107            }
108        }
109        string _password=null;
110        /// <summary>
111        /// The password used to encrypt the workbook.
112        /// </summary>
113        public string Password
114        {
115            get
116            {
117                return _password;
118            }
119            set
120            {
121                _password = value;
122                _isEncrypted = (value != null);
123            }
124        }
125        /// <summary>
126        /// Algorithm used for encrypting the package. Default is AES 128-bit
127        /// </summary>
128        public EncryptionAlgorithm Algorithm { get; set; }
129    }
130}
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