mirror of
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1043 lines
44 KiB
C#
1043 lines
44 KiB
C#
/* Copyright (c) Citrix Systems, Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms,
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* with or without modification, are permitted provided
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* that the following conditions are met:
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*
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* * Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the
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* following disclaimer.
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the
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* following disclaimer in the documentation and/or other
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* materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
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* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
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* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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using System;
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using System.Collections.Generic;
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using System.IO;
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using System.Security.Cryptography;
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using System.Security.Cryptography.X509Certificates;
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using System.Text;
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using System.Text.RegularExpressions;
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using System.Xml;
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using XenOvf.Definitions;
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using XenOvf.Definitions.XENC;
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using XenOvf.Utilities;
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namespace XenOvf
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{
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public partial class OVF
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{
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// LATIN: No fortification is such that it cannot be subdued with money.
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private const string KnownEncrypt = "Nihil tam munitum quod non expugnari pecunia possit. ";
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private static bool _cancelEncrypt = false;
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private static ulong _position = 0;
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private static ulong _length = 0;
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private const int _KeySize = 0;
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/// <summary>
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/// Set to TRUE to cancel current Encrypt Decrypt operation.
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/// </summary>
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public static bool CancelEncryption
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{
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get
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{
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return _cancelEncrypt;
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}
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set
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{
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Tools.CancelStreamCopy = true;
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_cancelEncrypt = value;
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}
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}
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/// <summary>
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/// Where [bytes] the encryption/decryption operation is.
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/// </summary>
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public static ulong Position
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{
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get
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{
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return _position;
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}
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}
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/// <summary>
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/// How many [bytes] to encrypt/decrypt
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/// </summary>
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public static ulong Length
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{
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get
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{
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return _length;
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}
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}
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#region ENCRYPTION
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/// <summary>
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/// Encrypt the files associated with the provided OVF package.
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/// </summary>
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/// <param name="pathToOvf">Path to the OVF Package</param>
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/// <param name="ovfFileName">Filename of the ovf file.</param>
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/// <param name="password">password to use during encryption.</param>
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public void Encrypt(string pathToOvf, string ovfFileName, string password)
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{
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string filename = Path.Combine(pathToOvf, ovfFileName);
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EnvelopeType env = Tools.LoadOvfXml(filename);
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Encrypt(env, filename, password);
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}
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/// <summary>
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/// Encrypt the files associated with the provided OVF package.
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/// </summary>
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/// <param name="env">EnvelopeType ovf object</param>
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/// <param name="ovfFileName">fullpath/filename</param>
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/// <param name="password">password to use during encryption.</param>
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public static void Encrypt(EnvelopeType env, string ovfFileName, string password)
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{
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_cancelEncrypt = false;
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CryptoFileWrapper(env, ovfFileName, password, true);
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if (_cancelEncrypt)
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{
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log.Info("Encrypt: CANCELLED successfully.");
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}
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else
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{
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SaveAs(env, ovfFileName);
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}
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}
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/// <summary>
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/// Decrypt the files associated with the provided OVF package.
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/// </summary>
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/// <param name="pathToOvf">Path to the OVF Package</param>
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/// <param name="ovfFileName">Filename of the ovf file.</param>
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/// <param name="password">password to use during decryption.</param>
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public void Decrypt(string pathToOvf, string ovfFileName, string password)
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{
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string filename = Path.Combine(pathToOvf, ovfFileName);
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EnvelopeType env = Tools.LoadOvfXml(filename);
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Decrypt(env, filename, password);
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}
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/// <summary>
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/// Decrypt the files associated with the provided OVF package.
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/// </summary>
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/// <param name="env">EnvelopeType ovf object</param>
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/// <param name="ovfFileName">fullpath/filename</param>
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/// <param name="password">password to use during decryption.</param>
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public void Decrypt(EnvelopeType env, string ovfFileName, string password)
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{
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_cancelEncrypt = false;
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CryptoFileWrapper(env, ovfFileName, password, false);
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if (_cancelEncrypt)
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{
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log.Info("Encrypt: CANCELLED successfully.");
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}
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else
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{
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SaveAs(env, ovfFileName);
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}
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}
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/// <summary>
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/// Create a file decryption stream to read out an encrypted file.
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/// </summary>
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/// <param name="filename">File to decrypt</param>
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/// <param name="password">password of to file.</param>
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/// <returns>Decrypted Stream</returns>
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public static Stream DecryptFile(string filename, string version, string password)
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{
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FileStream fs = new FileStream(filename, FileMode.Open, FileAccess.ReadWrite, FileShare.None);
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return CryptoStreamWrapper(fs, password, false, version);
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}
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/// <summary>
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/// Create a file encryption stream to write out an encrypted file.
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/// </summary>
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/// <param name="filename">File to encrypt to.</param>
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/// <param name="password">password of to file.</param>
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/// <returns>Decrypted Stream</returns>
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public Stream EncryptFile(string filename, string version, string password)
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{
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FileStream fs = new FileStream(filename, FileMode.Create, FileAccess.ReadWrite, FileShare.None);
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return CryptoStreamWrapper(fs, password, true, version);
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}
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/// <summary>
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/// Decrypt a file to a temporary file.
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/// Action can be cancel via: CancelEncryption = true
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/// </summary>
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/// <param name="classname">encryption class to use must implement: ICryptoTransform ie: System.Security.Cryptography.RijndaelManaged</param>
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/// <param name="filename">Encrypted file name</param>
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/// <param name="password">Password to perform decryption</param>
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/// <param name="tempfile">file to write to.</param>
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public static void DecryptToTempFile(string classname, string filename, string version, string password, string tempfile)
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{
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if (version != null && (CheckSecurityVersion(version, Properties.Settings.Default.securityVersion) >= 0))
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{
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using (CryptoStream decryptStream = (CryptoStream)DecryptFile(filename, version, password))
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{
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using (FileStream fileStream = new FileStream(tempfile, FileMode.Create, FileAccess.ReadWrite, FileShare.None))
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{
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Tools.StreamCopy(decryptStream, fileStream);
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}
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}
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}
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else
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{
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// Encryption with issues... original code base.
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ICryptoTransform transform = CryptoSetup(classname, password, false, version);
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DeprecatedCryptoFile(transform, filename, tempfile, false);
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if (_cancelEncrypt) File.Delete(tempfile);
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}
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}
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/// <summary>
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/// Checks to see if an OVF is encrypted.
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/// </summary>
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/// <param name="ovfFilename">filename</param>
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/// <returns>true = is encrypted, false = not encrypted</returns>
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public bool HasEncryption(string ovfFilename)
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{
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EnvelopeType env = Load(ovfFilename);
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return HasEncryption(env);
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}
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/// <summary>
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/// Checks to see if an OVF is encrypted.
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/// </summary>
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/// <param name="ovfFilename">EnvelopeType OVF object</param>
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/// <returns>true = is encrypted, false = not encrypted</returns>
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public static bool HasEncryption(EnvelopeType ovfObj)
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{
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SecuritySection_Type[] security = FindSections<SecuritySection_Type>(ovfObj.Sections);
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if (security != null && security.Length > 0)
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{
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return true; // we now know that a security section is defined therefore something is encrypted.
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}
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return false;
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}
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/// <summary>
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/// An ovf can contain both encrypted and non-encrypted file mixed together.
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/// find if file name is encrypted.
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/// 1. check the References for the security ID
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/// 2. check the Security id section exists.
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/// </summary>
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/// <param name="ovfObj">OVF Envelope</param>
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/// <param name="filename">filename to check</param>
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/// <returns>true = encrypted; false = not encrypted</returns>
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public static bool IsThisEncrypted(EnvelopeType ovfObj, RASD_Type rasd)
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{
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bool _isEncrypted = false;
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// 15,16,17,19,20 are attached files.
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// rest is RASD specific
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switch (rasd.ResourceType.Value)
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{
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case 15:
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case 16:
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case 17:
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case 19:
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case 20:
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{
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File_Type file = FindFileReferenceByRASD(ovfObj, rasd);
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if (file != null)
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{
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if (!string.IsNullOrEmpty(file.Id))
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{
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_isEncrypted = IsThisIdEncrypted(ovfObj, file.Id);
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}
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}
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break;
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}
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default:
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{
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// currently encrypted RASD or Elements, isn't being done, but this can check it.
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if (rasd.AnyAttr != null && rasd.AnyAttr.Length > 0)
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{
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foreach (XmlAttribute xa in rasd.AnyAttr)
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{
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if (xa.Name.ToLower().Equals("xenc:id"))
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{
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_isEncrypted = IsThisIdEncrypted(ovfObj, xa.Value);
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break;
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}
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}
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}
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break;
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}
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}
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return _isEncrypted;
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}
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public static bool IsThisIdEncrypted(EnvelopeType ovfObj, string id)
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{
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SecuritySection_Type[] security = FindSections<SecuritySection_Type>(ovfObj.Sections);
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if (security != null && security.Length > 0) // if no security section don't bother going any further.
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{
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foreach (SecuritySection_Type sst in security)
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{
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foreach (Security_Type st in sst.Security)
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{
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foreach (XenOvf.Definitions.XENC.DataReference dataref in st.ReferenceList.Items)
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{
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if (!string.IsNullOrEmpty(dataref.ValueType) && dataref.ValueType.Contains(id))
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{
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return true; // no need to go anyfurther, nicer just to leave now.
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}
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}
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}
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}
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}
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return false; // get here... its not encrypted.
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}
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/// <summary>
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/// Validate password prior do decrypting, depends on sample encrypted section in The SecuritySection.
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/// </summary>
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/// <param name="ovfFilename">ovf file name</param>
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/// <param name="password">password to check</param>
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/// <returns>true = valid password, false = password failed</returns>
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public bool CheckPassword(string ovfFilename, string password)
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{
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EnvelopeType env = Load(ovfFilename);
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return CheckPassword(env, password);
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}
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/// <summary>
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/// Validate password prior do decrypting, depends on sample encrypted section in The SecuritySection.
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/// </summary>
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/// <param name="ovfObj">EnvelopeType OVF Object</param>
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/// <param name="password">password to check</param>
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/// <returns>true = valid password, false = password failed</returns>
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public bool CheckPassword(EnvelopeType ovfObj, string password)
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{
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bool isValid = false;
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SecuritySection_Type[] security = FindSections<SecuritySection_Type>(ovfObj.Sections);
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if (security != null && security.Length == 1)
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{
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foreach (Security_Type sec in security[0].Security)
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{
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EncryptedDataType edt = null;
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if (sec.EncryptedData != null && sec.EncryptedData.CipherData != null && sec.EncryptedData.CipherData.Item != null)
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{
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edt = sec.EncryptedData;
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}
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if (edt == null && sec.Any != null)
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{
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foreach (XmlElement xe in sec.Any)
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{
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if (xe.Name.Contains(":EncryptedData") || xe.Name.Contains(":EncrypteData"))
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{
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CipherDataType cdt = (CipherDataType)Tools.Deserialize(xe.InnerXml, typeof(CipherDataType));
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edt = new EncryptedDataType();
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edt.CipherData = cdt;
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}
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}
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}
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if (edt != null)
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{
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if (sec.version != null &&
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CheckSecurityVersion(sec.version, Properties.Settings.Default.securityVersion) >= 0)
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{
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isValid = InternalCheckPassword((byte[])edt.CipherData.Item, password, sec.version);
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}
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else
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{
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isValid = DeprecatedCheckPassword((byte[])edt.CipherData.Item, password, sec.version);
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}
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}
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else
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{
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throw new Exception(Messages.SECURITY_SECTION_INVALID);
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}
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}
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}
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auditLog.Debug(isValid ? Messages.PASSWORD_SUCCESS : Messages.PASSWORD_FAILED);
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return isValid;
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}
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/// <summary>
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///
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/// </summary>
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/// <param name="password"></param>
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/// <returns></returns>
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public static int CalculateStrength(string password)
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{
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int charSet = 0;
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int passStrength = -1;
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Regex pattern = new Regex(@"[\d]");
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if (pattern.IsMatch(password)) { charSet += 10; }
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pattern = new Regex("[a-z]");
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if (pattern.IsMatch(password)) { charSet += 26; }
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pattern = new Regex("[A-Z]");
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if (pattern.IsMatch(password)) { charSet += 26; }
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pattern = new Regex(@"[\W|_]");
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if (pattern.IsMatch(password)) { charSet += 31; }
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double result = Math.Log(Math.Pow(charSet, password.Length)) / Math.Log(2);
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if (result <= 32) { passStrength = 0; } //= "Low;"; }
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else if (result <= 64) { passStrength = 1; } //= "Fair;"; }
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else if (result <= 128) { passStrength = 2; } //= "Good;"; }
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else if (result > 128) { passStrength = 3; } //= "Strong;"; }
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return passStrength;;
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}
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#endregion
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#region SIGNATURES
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/// <summary>
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/// Create a Manifest for the OVF
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/// </summary>
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/// <param name="pathToOvf">Absolute path to the OVF files</param>
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/// <param name="ovfFileName">OVF file name (file.ovf)</param>
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public static void Manifest(string pathToOvf, string ovfFileName)
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{
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List<ManifestFileEntry> mfes = new List<ManifestFileEntry>();
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SHA1 sha1 = SHA1.Create();
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EnvelopeType ovfenv;
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try
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{
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using (FileStream stream = new FileStream(Path.Combine(pathToOvf, ovfFileName), FileMode.Open, FileAccess.Read))
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{
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ManifestFileEntry mfe = new ManifestFileEntry();
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mfe.Algorithm = Properties.Settings.Default.securityAlgorithm;
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mfe.Filename = ovfFileName;
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mfe.Digest = sha1.ComputeHash(stream);
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mfes.Add(mfe);
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stream.Position = 0;
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using (StreamReader sr = new StreamReader(stream))
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ovfenv = (EnvelopeType)Deserialize(sr.ReadToEnd());
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}
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}
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catch (Exception ex)
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{
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log.ErrorFormat("OVF.Security.Manifest: {0}", ex.Message);
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throw;
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}
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if (ovfenv != null && ovfenv.References != null && ovfenv.References.File != null && ovfenv.References.File.Length > 0)
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{
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File_Type[] files = ovfenv.References.File;
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foreach (File_Type file in files)
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{
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string currentfile = Path.Combine(pathToOvf, file.href);
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if (!File.Exists(currentfile))
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continue;
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ManifestFileEntry mfe = new ManifestFileEntry();
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using (FileStream computestream = new FileStream(currentfile, FileMode.Open, FileAccess.Read))
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{
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mfe.Algorithm = Properties.Settings.Default.securityAlgorithm;
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mfe.Filename = file.href;
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mfe.Digest = sha1.ComputeHash(computestream);
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mfes.Add(mfe);
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}
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}
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}
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string manifest = Path.Combine(pathToOvf, string.Format("{0}{1}", Path.GetFileNameWithoutExtension(ovfFileName), Properties.Settings.Default.manifestFileExtension));
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File.Delete(manifest); //no exception is thrown if file does not exist, so no need to check
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using (FileStream stream = new FileStream(manifest, FileMode.CreateNew, FileAccess.Write))
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{
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using (StreamWriter sw = new StreamWriter(stream))
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{
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foreach (ManifestFileEntry mf in mfes)
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sw.WriteLine(mf.ToString());
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sw.Flush();
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}
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}
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log.Debug("OVF.Manifest completed");
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}
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/// <summary>
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/// Digitaly Sign the OVF
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/// </summary>
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/// <param name="x509">Signing Certificate</param>
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/// <param name="pathToOvf">Absolute path to the OVF files</param>
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/// <param name="ovfFileName">OVF file name (file.ovf)</param>
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public static void Sign(X509Certificate2 Certificate, string PackageFolder, string PackageFileName)
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{
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if (Certificate == null)
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{
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throw new ArgumentException(Messages.CERTIFICATE_IS_INVALID);
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}
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string PackageName = PackageNameFromFileName(PackageFileName);
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string ManifestPath = Path.Combine(PackageFolder, PackageName) + Properties.Settings.Default.manifestFileExtension;
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// Create the manifest if it doesn't exist.
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if (!File.Exists(ManifestPath))
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{
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Manifest(PackageFolder, PackageFileName);
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}
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// Compute the SHA1 hash of the manifest.
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byte[] hash = null;
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using (FileStream stream = new FileStream(ManifestPath, FileMode.Open, FileAccess.Read, FileShare.Read))
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using (SHA1 sha1 = SHA1.Create())
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{
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hash = sha1.ComputeHash(stream);
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}
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|
|
// Describe the file to sign.
|
|
ManifestFileEntry signed = new ManifestFileEntry();
|
|
signed.Algorithm = Properties.Settings.Default.securityAlgorithm;
|
|
signed.Filename = Path.GetFileName(ManifestPath);
|
|
|
|
// Compute the signature.
|
|
try
|
|
{
|
|
RSACryptoServiceProvider csp = (RSACryptoServiceProvider)Certificate.PrivateKey;
|
|
|
|
signed.Digest = csp.SignHash(hash, CryptoConfig.MapNameToOID("SHA1"));
|
|
}
|
|
catch (Exception exception)
|
|
{
|
|
string message = exception.Message;
|
|
}
|
|
|
|
// Create the signature file.
|
|
string SignaturePath = Path.Combine(PackageFolder, PackageName) + Properties.Settings.Default.certificateFileExtension;
|
|
|
|
if (File.Exists(SignaturePath))
|
|
File.Delete(SignaturePath);
|
|
|
|
using (FileStream stream = new FileStream(SignaturePath, FileMode.CreateNew, FileAccess.Write, FileShare.None))
|
|
using (StreamWriter writer = new StreamWriter(stream))
|
|
{
|
|
// Describe the signed file.
|
|
writer.WriteLine(signed.ToString());
|
|
|
|
// Export the certificate encoded in Base64 using DER.
|
|
writer.WriteLine("-----BEGIN CERTIFICATE-----");
|
|
string b64Cert = Convert.ToBase64String(Certificate.Export(X509ContentType.SerializedCert));
|
|
writer.WriteLine(b64Cert);
|
|
writer.WriteLine("-----END CERTIFICATE-----");
|
|
writer.WriteLine("\r\n");
|
|
writer.Flush();
|
|
}
|
|
}
|
|
|
|
|
|
public static string PackageNameFromFileName(string FileName)
|
|
{
|
|
// Always drop the last extension.
|
|
string PackageName = Path.GetFileNameWithoutExtension(FileName);
|
|
|
|
if (Path.HasExtension(PackageName) && Path.GetExtension(PackageName).ToLower().EndsWith("ova"))
|
|
{
|
|
// Drop any .ova extension.
|
|
PackageName = Path.GetFileNameWithoutExtension(PackageName);
|
|
}
|
|
|
|
return PackageName;
|
|
}
|
|
#endregion
|
|
|
|
#region PRIVATE
|
|
private static void CryptoFileWrapper(EnvelopeType env, string ovffilename, string password, bool encrypt)
|
|
{
|
|
bool process = true;
|
|
|
|
if ((env.References == null) ||
|
|
(env.References.File == null) ||
|
|
(env.References.File.Length == 0))
|
|
{
|
|
log.Info("OVF.Security: No files to encrypt/decrypt.");
|
|
return;
|
|
}
|
|
try
|
|
{
|
|
List<DataReference> dataReference = new List<DataReference>();
|
|
string cryptoclassname = (string)AlgorithmMap((Properties.Settings.Default.encryptAlgorithmURI.Split(new char[] { '#' }))[1].ToLower().Replace('-', '_'));
|
|
int keysize = Convert.ToInt32(Properties.Settings.Default.encryptKeyLength);
|
|
string fileuuids = null;
|
|
string version = null;
|
|
//
|
|
// Initial version really only works when there is ONLY ONE SecuritySection::Security
|
|
//
|
|
#region GET DECRYPT INFO
|
|
if (!encrypt)
|
|
{
|
|
SecuritySection_Type securitysection = null;
|
|
foreach (Section_Type section in env.Sections)
|
|
{
|
|
if (section is SecuritySection_Type)
|
|
{
|
|
securitysection = (SecuritySection_Type)section;
|
|
break;
|
|
}
|
|
}
|
|
foreach (Security_Type securitytype in securitysection.Security)
|
|
{
|
|
foreach (XenOvf.Definitions.XENC.ReferenceType dataref in securitytype.ReferenceList.Items)
|
|
{
|
|
if (dataref is DataReference)
|
|
{
|
|
fileuuids += ":" + ((DataReference)dataref).ValueType;
|
|
}
|
|
}
|
|
if (securitytype.EncryptionMethod != null &&
|
|
securitytype.EncryptionMethod.Algorithm != null)
|
|
{
|
|
string algoname = (securitytype.EncryptionMethod.Algorithm.Split(new char[] { '#' }))[1].ToLower().Replace('-', '_');
|
|
object x = Properties.Settings.Default[algoname];
|
|
if (x != null)
|
|
{
|
|
cryptoclassname = (string)x;
|
|
keysize = Convert.ToInt32(securitytype.EncryptionMethod.KeySize);
|
|
}
|
|
}
|
|
if (!string.IsNullOrEmpty(securitytype.version))
|
|
{
|
|
version = securitytype.version;
|
|
}
|
|
}
|
|
}
|
|
#endregion
|
|
|
|
#region PROCESS FILES
|
|
foreach (File_Type file in env.References.File)
|
|
{
|
|
if (encrypt)
|
|
{
|
|
version = Properties.Settings.Default.securityVersion;
|
|
if (file.Id == null)
|
|
{
|
|
file.Id = "xen_" + Guid.NewGuid().ToString();
|
|
DataReference newDataReference = new DataReference();
|
|
newDataReference.ValueType = file.Id;
|
|
dataReference.Add(newDataReference);
|
|
process = true;
|
|
}
|
|
else
|
|
{
|
|
log.InfoFormat("File already encrypted, skipping. [{0}]", file.href);
|
|
process = false;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (file.Id != null &&
|
|
fileuuids != null &&
|
|
fileuuids.ToLower().Contains(file.Id.ToLower()))
|
|
{
|
|
process = true;
|
|
file.Id = null;
|
|
}
|
|
else
|
|
{
|
|
process = false;
|
|
log.InfoFormat("File is not encrypted, skipping. [{0}]", file.href);
|
|
}
|
|
}
|
|
|
|
if (process)
|
|
{
|
|
string fullname = string.Format(@"{0}\{1}", Path.GetDirectoryName(ovffilename), file.href);
|
|
log.DebugFormat(encrypt ? "Encrypt: {0}" : "Decrypt: {0}", fullname);
|
|
ICryptoTransform trans = CryptoSetup(cryptoclassname, password, encrypt, version);
|
|
CryptoFile(trans, fullname, fullname + ".tmp", encrypt);
|
|
if (_cancelEncrypt)
|
|
{
|
|
File.Delete(fullname + ".tmp");
|
|
}
|
|
else
|
|
{
|
|
File.Delete(fullname);
|
|
File.Move(fullname + ".tmp", fullname);
|
|
}
|
|
}
|
|
}
|
|
#endregion
|
|
|
|
#region BUILD SECURITY SECTION
|
|
if (encrypt && process && !_cancelEncrypt)
|
|
{
|
|
List<Section_Type> sections = new List<Section_Type>();
|
|
SecuritySection_Type securitySection = null;
|
|
|
|
foreach (Section_Type section in env.Sections)
|
|
{
|
|
if (section is SecuritySection_Type)
|
|
{
|
|
securitySection = (SecuritySection_Type)section;
|
|
}
|
|
else
|
|
{
|
|
sections.Add(section);
|
|
}
|
|
}
|
|
|
|
if (securitySection == null)
|
|
{
|
|
securitySection = new SecuritySection_Type();
|
|
securitySection.Info = new Msg_Type();
|
|
securitySection.Info.Value = "Encrypted Content Definition";
|
|
}
|
|
|
|
List<Security_Type> secType = new List<Security_Type>();
|
|
if (securitySection.Security != null && securitySection.Security.Length > 0)
|
|
{
|
|
secType.AddRange(securitySection.Security);
|
|
}
|
|
|
|
Security_Type securityType = new Security_Type();
|
|
securityType.version = Properties.Settings.Default.securityVersion;
|
|
securityType.Id = "xen_" + Guid.NewGuid().ToString();
|
|
ReferenceList referenceList = new ReferenceList();
|
|
referenceList.Items = dataReference.ToArray();
|
|
List<ItemsChoiceType3> ictList = new List<ItemsChoiceType3>();
|
|
for (int i = 0; i < dataReference.Count; i++)
|
|
{
|
|
ictList.Add(ItemsChoiceType3.DataReference);
|
|
}
|
|
referenceList.ItemsElementName = ictList.ToArray();
|
|
EncryptionMethodType encryptMethod = new EncryptionMethodType();
|
|
encryptMethod.KeySize = Convert.ToString(_KeySize);
|
|
encryptMethod.Algorithm = Properties.Settings.Default.encryptAlgorithmURI;
|
|
|
|
EncryptedDataType EncryptedData = new EncryptedDataType();
|
|
EncryptedData.CipherData = new CipherDataType();
|
|
|
|
CryptoElement(EncryptedData, KnownEncrypt, cryptoclassname, version, password);
|
|
|
|
securityType.ReferenceList = referenceList;
|
|
securityType.EncryptionMethod = encryptMethod;
|
|
securityType.EncryptedData = EncryptedData;
|
|
|
|
|
|
secType.Add(securityType);
|
|
securitySection.Security = secType.ToArray();
|
|
sections.Add(securitySection);
|
|
env.Sections = sections.ToArray();
|
|
}
|
|
#endregion
|
|
}
|
|
catch (Exception ex)
|
|
{
|
|
log.ErrorFormat("OVF.Security: Cryptography error: {0}", ex.Message);
|
|
throw;
|
|
}
|
|
}
|
|
private static CryptoStream CryptoStreamWrapper(Stream inputStream, string password, bool encrypt, string version)
|
|
{
|
|
try
|
|
{
|
|
string cryptoclassname = (string)AlgorithmMap((Properties.Settings.Default.encryptAlgorithmURI.Split(new char[] { '#' }))[1].ToLower().Replace('-', '_'));
|
|
ICryptoTransform trans = CryptoSetup(cryptoclassname, password, encrypt, version);
|
|
return CryptoStream1(trans, inputStream, encrypt);
|
|
|
|
}
|
|
catch (Exception ex)
|
|
{
|
|
throw ex;
|
|
}
|
|
}
|
|
private static ICryptoTransform CryptoSetup(string cryptoclassname, string password, bool encrypt, string version)
|
|
{
|
|
|
|
log.DebugFormat("CryptoSetup: using {0}", cryptoclassname);
|
|
SymmetricAlgorithm cryptObject = null;
|
|
try
|
|
{
|
|
Type EncType = Type.GetType(cryptoclassname, true);
|
|
cryptObject = (SymmetricAlgorithm)Activator.CreateInstance(EncType);
|
|
if (!string.IsNullOrEmpty(version) && (CheckSecurityVersion(version, Properties.Settings.Default.securityVersion) >= 0))
|
|
{
|
|
cryptObject.Padding = PaddingMode.PKCS7;
|
|
}
|
|
}
|
|
catch (Exception ex)
|
|
{
|
|
log.ErrorFormat("Encryption class error: {0}", ex.Message);
|
|
throw;
|
|
}
|
|
|
|
if (cryptObject == null)
|
|
{
|
|
log.Error("Encryption class could not be created");
|
|
throw new ArgumentNullException();
|
|
}
|
|
|
|
// OLD Initializers.
|
|
byte[] Key = new byte[24];
|
|
byte[] IV = new byte[16];
|
|
|
|
if (!string.IsNullOrEmpty(version) && (CheckSecurityVersion(version, "1.3") >= 0))
|
|
{
|
|
Key = new byte[cryptObject.Key.Length];
|
|
IV = new byte[cryptObject.IV.Length];
|
|
}
|
|
|
|
GenerateKey(password, ref Key, ref IV);
|
|
|
|
password = string.Empty;
|
|
|
|
cryptObject.Key = Key;
|
|
cryptObject.IV = IV;
|
|
|
|
ICryptoTransform transform = null;
|
|
if (encrypt)
|
|
{
|
|
transform = cryptObject.CreateEncryptor(cryptObject.Key, cryptObject.IV);
|
|
}
|
|
else
|
|
{
|
|
transform = cryptObject.CreateDecryptor(cryptObject.Key, cryptObject.IV);
|
|
}
|
|
return transform;
|
|
}
|
|
private static void CryptoFile(ICryptoTransform transform, string fullPathToFileName, string targetfile, bool encrypt)
|
|
{
|
|
FileStream inputFile = new FileStream(fullPathToFileName, FileMode.Open, FileAccess.Read, FileShare.None);
|
|
FileStream outputFile = new FileStream(targetfile, FileMode.Create, FileAccess.Write, FileShare.None);
|
|
CryptoStream cryptostream = null;
|
|
OnChanged(new OvfEventArgs(OvfEventType.Start, "Crypto: Start: ", fullPathToFileName, (ulong)0, (ulong)inputFile.Length));
|
|
_length = (ulong)inputFile.Length;
|
|
|
|
if (encrypt)
|
|
{
|
|
cryptostream = CryptoStream1(transform, outputFile, encrypt);
|
|
Tools.StreamCopy(inputFile, cryptostream);
|
|
cryptostream.FlushFinalBlock();
|
|
cryptostream.Flush();
|
|
}
|
|
else
|
|
{
|
|
cryptostream = CryptoStream1(transform, inputFile, encrypt);
|
|
Tools.StreamCopy(cryptostream, outputFile);
|
|
outputFile.Flush();
|
|
}
|
|
|
|
OnChanged(new OvfEventArgs(OvfEventType.End, "Crypto: Completed", fullPathToFileName, (ulong)0, (ulong)inputFile.Length));
|
|
inputFile.Dispose();
|
|
outputFile.Dispose();
|
|
}
|
|
private static void DeprecatedCryptoFile(ICryptoTransform transform, string fullPathToFileName, string targetfile, bool encrypt)
|
|
{
|
|
FileStream inputFile = new FileStream(fullPathToFileName, FileMode.Open, FileAccess.Read, FileShare.None);
|
|
FileStream outputFile = new FileStream(targetfile, FileMode.Create, FileAccess.Write, FileShare.None);
|
|
CryptoStream cryptostream = new CryptoStream(outputFile, transform, CryptoStreamMode.Write);
|
|
byte[] inputarray = new byte[MB * 2];
|
|
int currentRead = 0;
|
|
int totalRead = 0;
|
|
|
|
OnChanged(new OvfEventArgs(OvfEventType.Start, "Crypto: Start: ", fullPathToFileName, (ulong)0, (ulong)inputFile.Length));
|
|
_length = (ulong)inputFile.Length;
|
|
while (true)
|
|
{
|
|
currentRead = inputFile.Read(inputarray, 0, inputarray.Length);
|
|
if (currentRead == 0) break;
|
|
cryptostream.Write(inputarray, 0, currentRead);
|
|
totalRead += currentRead;
|
|
OnChanged(new OvfEventArgs(OvfEventType.Progress, "Crypto: Continue", fullPathToFileName, (ulong)totalRead, (ulong)inputFile.Length));
|
|
_position = (ulong)totalRead;
|
|
if (totalRead >= inputFile.Length) break;
|
|
if (_cancelEncrypt) break;
|
|
}
|
|
cryptostream.Flush();
|
|
OnChanged(new OvfEventArgs(OvfEventType.End, "Crypto: Completed", fullPathToFileName, (ulong)totalRead, (ulong)inputFile.Length));
|
|
// Not sure 'why' but it appears that the transform might not flush the last
|
|
// 16 bytes.
|
|
if (!encrypt && !_cancelEncrypt)
|
|
{
|
|
if (inputFile.Length > outputFile.Length && !_cancelEncrypt)
|
|
{
|
|
byte[] missing = new byte[inputFile.Length - outputFile.Length];
|
|
log.WarnFormat("PADDING Unencrypted VHD, with {0} zeros", (inputFile.Length - outputFile.Length));
|
|
outputFile.Write(missing, 0, missing.Length);
|
|
}
|
|
}
|
|
inputFile.Dispose();
|
|
outputFile.Flush();
|
|
outputFile.Dispose();
|
|
}
|
|
private bool InternalCheckPassword(byte[] bytearray, string password, string version)
|
|
{
|
|
bool isValid = false;
|
|
MemoryStream ms = new MemoryStream(bytearray);
|
|
CryptoStream checkStream = CryptoStreamWrapper(ms, password, false, version);
|
|
byte[] buff = new byte[bytearray.Length];
|
|
try
|
|
{
|
|
checkStream.Read(buff, 0, (int)bytearray.Length);
|
|
Encoding uni = new UnicodeEncoding();
|
|
string original = uni.GetString(buff, 0, buff.Length);
|
|
original = original.Trim(new char[] { ' ', '\0' });
|
|
if (original == KnownEncrypt.Trim()) { isValid = true; }
|
|
checkStream.Dispose();
|
|
}
|
|
catch (CryptographicException ce)
|
|
{
|
|
// If we get here the password is considered invalid
|
|
log.DebugFormat("InternalCheckPassword: Invalid password. {0}", ce.Message);
|
|
}
|
|
return isValid;
|
|
}
|
|
private bool DeprecatedCheckPassword(byte[] bytearray, string password, string version)
|
|
{
|
|
bool isValid = false;
|
|
MemoryStream ms = new MemoryStream(bytearray);
|
|
MemoryStream os = new MemoryStream();
|
|
Stream checkStream = CryptoStreamWrapper(ms, password, false, version);
|
|
while (true)
|
|
{
|
|
int r = -1;
|
|
try
|
|
{
|
|
r = checkStream.ReadByte();
|
|
}
|
|
catch (Exception ex)
|
|
{
|
|
log.ErrorFormat("CRYPTO Error: {0}", ex.Message);
|
|
break;
|
|
}
|
|
if (r == -1)
|
|
break;
|
|
os.WriteByte((byte)r);
|
|
}
|
|
os.Position = 0;
|
|
StreamReader sr = new StreamReader(os);
|
|
string original = sr.ReadToEnd(); ;
|
|
if (original.Trim() == KnownEncrypt.Trim()){ isValid = true; }
|
|
return isValid;
|
|
}
|
|
private static int CheckSecurityVersion(string version, string against)
|
|
{
|
|
int rtnvalue = 0;
|
|
string[] tstversion = version.Split(new char[] { '.' });
|
|
string[] curversion = against.Split(new char[] { '.' });
|
|
|
|
int tstRelease = 0;
|
|
int tstMajor = 0;
|
|
int tstMinor = 0;
|
|
int curRelease = 0;
|
|
int curMajor = 0;
|
|
int curMinor = 0;
|
|
|
|
if (tstversion.Length >= 1)
|
|
tstRelease = Convert.ToInt32(tstversion[0]);
|
|
if (tstversion.Length >= 2)
|
|
tstMajor = Convert.ToInt32(tstversion[1]);
|
|
if (tstversion.Length >= 3)
|
|
tstMinor = Convert.ToInt32(tstversion[1]);
|
|
|
|
if (curversion.Length >= 1)
|
|
curRelease = Convert.ToInt32(tstversion[0]);
|
|
if (curversion.Length >= 2)
|
|
curMajor = Convert.ToInt32(tstversion[1]);
|
|
if (curversion.Length >= 3)
|
|
curMinor = Convert.ToInt32(tstversion[1]);
|
|
|
|
if (tstRelease < curRelease) { rtnvalue = -1; }
|
|
else if (tstRelease > curRelease) { rtnvalue = 1; }
|
|
else if (tstMajor < curMajor) { rtnvalue = -1; }
|
|
else if (tstMajor > curMajor) { rtnvalue = 1; }
|
|
else if (tstMinor < curMinor) { rtnvalue = -1; }
|
|
else if (tstMinor > curMinor) { rtnvalue = 1; }
|
|
|
|
return rtnvalue;
|
|
}
|
|
|
|
private static void CryptoElement(XenOvf.Definitions.XENC.EncryptedDataType element, string original, string cryptoclassname, string version, string password)
|
|
{
|
|
Encoding encoding = new UnicodeEncoding();
|
|
MemoryStream ms = new MemoryStream();
|
|
CryptoStream crypted = CryptoStream1(CryptoSetup(cryptoclassname, password, true, version), ms, true);
|
|
byte[] bytes = encoding.GetBytes(original);
|
|
crypted.Write(bytes, 0, bytes.Length);
|
|
crypted.FlushFinalBlock();
|
|
|
|
ms.Position = 0;
|
|
byte[] CipherValue = new byte[ms.Length];
|
|
ms.Read(CipherValue, 0, CipherValue.Length);
|
|
element.CipherData.Item = CipherValue;
|
|
|
|
crypted.Dispose();
|
|
}
|
|
private CryptoStream CryptoStream1(ICryptoTransform transform, string fullPathToFileName, bool encrypt)
|
|
{
|
|
FileStream inputFile = new FileStream(fullPathToFileName, FileMode.Open, FileAccess.Read, FileShare.None);
|
|
return CryptoStream1(transform, inputFile, encrypt);
|
|
}
|
|
private static CryptoStream CryptoStream1(ICryptoTransform transform, Stream inputStream, bool encrypt)
|
|
{
|
|
return new CryptoStream(inputStream, transform, encrypt ? CryptoStreamMode.Write : CryptoStreamMode.Read);
|
|
}
|
|
private static void GenerateKey(string SecretPhrase, ref byte[] key, ref byte[] iv)
|
|
{
|
|
// Initialize internal values
|
|
|
|
// Perform a hash operation using the phrase. This will
|
|
// generate a unique 32 character value to be used as the key.
|
|
byte[] bytePhrase = Encoding.ASCII.GetBytes(SecretPhrase);
|
|
SHA384Managed sha384 = new SHA384Managed();
|
|
sha384.ComputeHash(bytePhrase);
|
|
byte[] result = sha384.Hash;
|
|
|
|
for (int loop = 0; loop < key.Length; loop++)
|
|
key[loop] = result[loop];
|
|
for (int loop = key.Length; loop < (key.Length + iv.Length); loop++)
|
|
iv[loop - key.Length] = result[loop];
|
|
}
|
|
#endregion
|
|
|
|
internal class ManifestFileEntry
|
|
{
|
|
public string Algorithm = null;
|
|
public string Filename = null;
|
|
public byte[] Digest = null;
|
|
|
|
public override string ToString()
|
|
{
|
|
if (Algorithm != null && Filename != null && Digest != null)
|
|
{
|
|
StringBuilder sb = new StringBuilder();
|
|
foreach (byte b in Digest)
|
|
{
|
|
sb.AppendFormat("{0:x2}", b);
|
|
}
|
|
// same as:
|
|
//string bc = BitConverter.ToString(Digest).Replace("-","");;
|
|
return string.Format("{0}({1})= {2}", Algorithm, Filename, sb.ToString());
|
|
}
|
|
else
|
|
{
|
|
throw new ArgumentNullException("NULL data inside ManifestFileEntry");
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|