/*******************************************************************************
|
* You may amend and distribute as you like, but don't remove this header!
|
*
|
* EPPlus provides server-side generation of Excel 2007/2010 spreadsheets.
|
* See http://www.codeplex.com/EPPlus for details.
|
*
|
* Copyright (C) 2011 Jan Källman
|
*
|
* This library is free software; you can redistribute it and/or
|
* modify it under the terms of the GNU Lesser General Public
|
* License as published by the Free Software Foundation; either
|
* version 2.1 of the License, or (at your option) any later version.
|
|
* This library is distributed in the hope that it will be useful,
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
|
* See the GNU Lesser General Public License for more details.
|
*
|
* The GNU Lesser General Public License can be viewed at http://www.opensource.org/licenses/lgpl-license.php
|
* If you unfamiliar with this license or have questions about it, here is an http://www.gnu.org/licenses/gpl-faq.html
|
*
|
* All code and executables are provided "as is" with no warranty either express or implied.
|
* The author accepts no liability for any damage or loss of business that this product may cause.
|
*
|
* Code change notes:
|
*
|
***************************************************************************************
|
* This class is created with the help of the MS-OFFCRYPTO PDF documentation... http://msdn.microsoft.com/en-us/library/cc313071(office.12).aspx
|
* Decrypytion library for Office Open XML files(Lyquidity) and Sminks very nice example
|
* on "Reading compound documents in c#" on Stackoverflow. Many thanks!
|
***************************************************************************************
|
*
|
* Code change notes:
|
*
|
* Author Change Date
|
*******************************************************************************
|
* Jan Källman Added 10-AUG-2010
|
* Jan Källman License changed GPL-->LGPL 2011-12-27
|
*******************************************************************************/
|
using System;
|
using System.Collections.Generic;
|
using System.Text;
|
|
namespace HH.WMS.Utils.EPPlus
|
{
|
/// <summary>
|
/// Encryption Algorithm
|
/// </summary>
|
public enum EncryptionAlgorithm
|
{
|
/// <summary>
|
/// 128-bit AES. Default
|
/// </summary>
|
AES128,
|
/// <summary>
|
/// 192-bit AES.
|
/// </summary>
|
AES192,
|
/// <summary>
|
/// 256-bit AES.
|
/// </summary>
|
AES256
|
}
|
/// <summary>
|
/// How and if the workbook is encrypted
|
///<seealso cref="ExcelProtection"/>
|
///<seealso cref="ExcelSheetProtection"/>
|
/// </summary>
|
public class ExcelEncryption
|
{
|
/// <summary>
|
/// Constructor
|
/// </summary>
|
internal ExcelEncryption()
|
{
|
Algorithm = EncryptionAlgorithm.AES128;
|
}
|
/// <summary>
|
/// Constructor
|
/// </summary>
|
/// <param name="encryptionAlgorithm">Algorithm used to encrypt the package. Default is AES128</param>
|
internal ExcelEncryption(EncryptionAlgorithm encryptionAlgorithm)
|
{
|
Algorithm = encryptionAlgorithm;
|
}
|
bool _isEncrypted = false;
|
/// <summary>
|
/// Is the package encrypted
|
/// </summary>
|
public bool IsEncrypted
|
{
|
get
|
{
|
return _isEncrypted;
|
}
|
set
|
{
|
_isEncrypted = value;
|
if (_isEncrypted)
|
{
|
if (_password == null) _password = "";
|
}
|
else
|
{
|
_password = null;
|
}
|
}
|
}
|
string _password=null;
|
/// <summary>
|
/// The password used to encrypt the workbook.
|
/// </summary>
|
public string Password
|
{
|
get
|
{
|
return _password;
|
}
|
set
|
{
|
_password = value;
|
_isEncrypted = (value != null);
|
}
|
}
|
/// <summary>
|
/// Algorithm used for encrypting the package. Default is AES 128-bit
|
/// </summary>
|
public EncryptionAlgorithm Algorithm { get; set; }
|
}
|
}
|
