move the scheduler to a windows service

WebsitePanel/Sources/WebsitePanel.EnterpriseServer.Code/Common/CryptoUtils.cs

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+// Copyright (c) 2012, Outercurve Foundation.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without modification,
+// are permitted provided that the following conditions are met:
+//
+// - Redistributions of source code must  retain  the  above copyright notice, this
+//   list of conditions and the following disclaimer.
+//
+// - Redistributions in binary form  must  reproduce the  above  copyright  notice,
+//   this list of conditions  and  the  following  disclaimer in  the documentation
+//   and/or other materials provided with the distribution.
+//
+// - Neither  the  name  of  the  Outercurve Foundation  nor   the   names  of  its
+//   contributors may be used to endorse or  promote  products  derived  from  this
+//   software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,  BUT  NOT  LIMITED TO, THE IMPLIED
+// WARRANTIES  OF  MERCHANTABILITY   AND  FITNESS  FOR  A  PARTICULAR  PURPOSE  ARE
+// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
+// ANY DIRECT, INDIRECT, INCIDENTAL,  SPECIAL,  EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+// (INCLUDING, BUT NOT LIMITED TO,  PROCUREMENT  OF  SUBSTITUTE  GOODS OR SERVICES;
+// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)  HOWEVER  CAUSED AND ON
+// ANY  THEORY  OF  LIABILITY,  WHETHER  IN  CONTRACT,  STRICT  LIABILITY,  OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE)  ARISING  IN  ANY WAY OUT OF THE USE OF THIS
+// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+using System;
+using System.IO;
+using System.Text;
+using System.Security.Cryptography;
+using System.Configuration;
+using Microsoft.Win32;
+
+namespace WebsitePanel.EnterpriseServer
+{
+	/// <summary>
+	/// Summary description for CryptoUtils.
+	/// </summary>
+	public class CryptoUtils
+	{
+        static string EnterpriseServerRegistryPath = "SOFTWARE\\WebsitePanel\\EnterpriseServer";
+
+		public static string CryptoKey
+		{
+			get 
+            {
+                string Key = ConfigurationManager.AppSettings["WebsitePanel.AltCryptoKey"];
+                string value = string.Empty;
+
+                if (!string.IsNullOrEmpty(Key))
+                {
+                    RegistryKey root = Registry.LocalMachine;
+                    RegistryKey rk = root.OpenSubKey(EnterpriseServerRegistryPath);
+                    if (rk != null)
+                    {
+                        value = (string)rk.GetValue(Key, null);
+                        rk.Close();
+                    }
+                }
+
+                if (!string.IsNullOrEmpty(value))
+                    return value;
+                else
+                    return ConfigurationManager.AppSettings["WebsitePanel.CryptoKey"]; 
+                
+            }
+		}
+
+		public static bool EncryptionEnabled
+		{
+			get
+			{
+				return (ConfigurationManager.AppSettings["WebsitePanel.EncryptionEnabled"] != null)
+					? Boolean.Parse(ConfigurationManager.AppSettings["WebsitePanel.EncryptionEnabled"]) : true;
+			}
+		}
+
+		public static string Encrypt(string InputText)
+		{
+			string Password = CryptoKey;
+
+			if(!EncryptionEnabled)
+				return InputText;
+
+            if (InputText == null)
+                return InputText;
+
+			// We are now going to create an instance of the 
+			// Rihndael class.
+			RijndaelManaged RijndaelCipher = new RijndaelManaged();
+
+			// First we need to turn the input strings into a byte array.
+			byte[] PlainText = System.Text.Encoding.Unicode.GetBytes(InputText);
+
+
+			// We are using salt to make it harder to guess our key
+			// using a dictionary attack.
+			byte[] Salt = Encoding.ASCII.GetBytes(Password.Length.ToString());
+
+ 
+			// The (Secret Key) will be generated from the specified 
+			// password and salt.
+			PasswordDeriveBytes SecretKey = new PasswordDeriveBytes(Password, Salt);
+
+ 
+			// Create a encryptor from the existing SecretKey bytes.
+			// We use 32 bytes for the secret key 
+			// (the default Rijndael key length is 256 bit = 32 bytes) and
+			// then 16 bytes for the IV (initialization vector),
+			// (the default Rijndael IV length is 128 bit = 16 bytes)
+			ICryptoTransform Encryptor = RijndaelCipher.CreateEncryptor(SecretKey.GetBytes(32), SecretKey.GetBytes(16));
+
+ 
+			// Create a MemoryStream that is going to hold the encrypted bytes 
+			MemoryStream memoryStream = new MemoryStream(); 
+
+ 
+			// Create a CryptoStream through which we are going to be processing our data. 
+			// CryptoStreamMode.Write means that we are going to be writing data 
+			// to the stream and the output will be written in the MemoryStream
+			// we have provided. (always use write mode for encryption)
+			CryptoStream cryptoStream = new CryptoStream(memoryStream, Encryptor, CryptoStreamMode.Write);
+
+			// Start the encryption process.
+			cryptoStream.Write(PlainText, 0, PlainText.Length);
+
+
+			// Finish encrypting.
+			cryptoStream.FlushFinalBlock();
+
+			// Convert our encrypted data from a memoryStream into a byte array.
+			byte[] CipherBytes = memoryStream.ToArray();
+
+
+
+			// Close both streams.
+			memoryStream.Close();
+			cryptoStream.Close();
+
+        
+
+			// Convert encrypted data into a base64-encoded string.
+			// A common mistake would be to use an Encoding class for that. 
+			// It does not work, because not all byte values can be
+			// represented by characters. We are going to be using Base64 encoding
+			// That is designed exactly for what we are trying to do. 
+			string EncryptedData = Convert.ToBase64String(CipherBytes);
+
+ 
+
+			// Return encrypted string.
+			return EncryptedData;
+		}
+
+
+		public static string Decrypt(string InputText)
+		{
+			try
+			{
+				if(!EncryptionEnabled)
+					return InputText;
+
+                if (InputText == null || InputText == "")
+                    return InputText;
+
+				string Password = CryptoKey;
+				RijndaelManaged  RijndaelCipher = new RijndaelManaged();
+
+ 
+				byte[] EncryptedData = Convert.FromBase64String(InputText);
+				byte[] Salt = Encoding.ASCII.GetBytes(Password.Length.ToString());
+
+
+				PasswordDeriveBytes SecretKey = new PasswordDeriveBytes(Password, Salt);
+
+				// Create a decryptor from the existing SecretKey bytes.
+				ICryptoTransform Decryptor = RijndaelCipher.CreateDecryptor(SecretKey.GetBytes(32), SecretKey.GetBytes(16));
+ 
+
+				MemoryStream  memoryStream = new MemoryStream(EncryptedData);
+
+				// Create a CryptoStream. (always use Read mode for decryption).
+				CryptoStream  cryptoStream = new CryptoStream(memoryStream, Decryptor, CryptoStreamMode.Read);
+
+
+				// Since at this point we don't know what the size of decrypted data
+				// will be, allocate the buffer long enough to hold EncryptedData;
+				// DecryptedData is never longer than EncryptedData.
+				byte[] PlainText = new byte[EncryptedData.Length];
+
+				// Start decrypting.
+				int DecryptedCount = cryptoStream.Read(PlainText, 0, PlainText.Length);
+
+
+				memoryStream.Close();
+				cryptoStream.Close();
+
+				// Convert decrypted data into a string. 
+				string DecryptedData = Encoding.Unicode.GetString(PlainText, 0, DecryptedCount);
+
+
+				// Return decrypted string.   
+				return DecryptedData;
+			}
+			catch
+			{
+				return "";
+			}
+		}
+
+        public static string SHA1(string plainText)
+        {
+            // Convert plain text into a byte array.
+            byte[] plainTextBytes = Encoding.UTF8.GetBytes(plainText);
+
+            HashAlgorithm hash = new SHA1Managed();;
+
+            // Compute hash value of our plain text with appended salt.
+            byte[] hashBytes = hash.ComputeHash(plainTextBytes);
+
+            // Return the result.
+            return Convert.ToBase64String(hashBytes);
+        }
+	}
+}