123 lines
3.2 KiB
C#
123 lines
3.2 KiB
C#
/*
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KeePass Password Safe - The Open-Source Password Manager
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Copyright (C) 2003-2012 Dominik Reichl <dominik.reichl@t-online.de>
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Modified to be used with Mono for Android. Changes Copyright (C) 2013 Philipp Crocoll
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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using System;
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using System.Security;
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using System.Security.Cryptography;
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using System.IO;
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using KeePassLib.Cryptography;
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using KeePassLib.Resources;
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using KeePassLib.Security;
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using KeePassLib.Utility;
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namespace KeePassLib.Keys
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{
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/// <summary>
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/// A user key depending on the currently logged on Windows user account.
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/// </summary>
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public sealed class KcpUserAccount : IUserKey
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{
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private ProtectedBinary m_pbKeyData = null;
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// Constant initialization vector (unique for KeePass)
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private static readonly byte[] m_pbEntropy = new byte[]{
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0xDE, 0x13, 0x5B, 0x5F, 0x18, 0xA3, 0x46, 0x70,
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0xB2, 0x57, 0x24, 0x29, 0x69, 0x88, 0x98, 0xE6
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};
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private const string UserKeyFileName = "ProtectedUserKey.bin";
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/// <summary>
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/// Get key data. Querying this property is fast (it returns a
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/// reference to a cached <c>ProtectedBinary</c> object).
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/// If no key data is available, <c>null</c> is returned.
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/// </summary>
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public ProtectedBinary KeyData
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{
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get { return m_pbKeyData; }
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}
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/// <summary>
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/// Construct a user account key.
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/// </summary>
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public KcpUserAccount()
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{
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throw new NotSupportedException("DataProtection not supported on MonoForAndroid!");
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}
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// public void Clear()
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// {
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// m_pbKeyData = null;
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// }
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private static string GetUserKeyFilePath(bool bCreate)
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{
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string strUserDir = Environment.GetFolderPath(
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Environment.SpecialFolder.ApplicationData);
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strUserDir = UrlUtil.EnsureTerminatingSeparator(strUserDir, false);
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strUserDir += PwDefs.ShortProductName;
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if(bCreate && !Directory.Exists(strUserDir))
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Directory.CreateDirectory(strUserDir);
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strUserDir = UrlUtil.EnsureTerminatingSeparator(strUserDir, false);
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return strUserDir + UserKeyFileName;
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}
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private static byte[] LoadUserKey(bool bShowWarning)
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{
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byte[] pbKey = null;
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#if !KeePassLibSD
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try
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{
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throw new NotSupportedException("DataProtection not supported on MonoForAndroid!");
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}
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catch(Exception exLoad)
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{
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if(bShowWarning) MessageService.ShowWarning(exLoad);
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pbKey = null;
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}
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#endif
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return pbKey;
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}
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private static byte[] CreateUserKey()
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{
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byte[] pbKey = null;
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#if !KeePassLibSD
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try
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{
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throw new NotSupportedException("DataProtection not supported on MonoForAndroid!");
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}
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catch(Exception) { pbKey = null; }
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#endif
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return pbKey;
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}
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}
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}
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