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WebDav Explorer code cleanup

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This commit is contained in:
vfedosevich 2014-12-30 03:41:58 -08:00
parent a4c6331a2a
commit f5b41b5c85
17 changed files with 210 additions and 216 deletions
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198
WebsitePanel/Sources/WebsitePanel.WebDavPortal/Cryptography/CryptoUtils.cs Normal file
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using Microsoft.Win32;
using System;
using System.Collections.Generic;
using System.Configuration;
using System.IO;
using System.Linq;
using System.Security.Cryptography;
using System.Text;
using System.Web;
namespace WebsitePanel.WebDavPortal.Cryptography
{
public class CryptoUtils : ICryptography
{
private string EnterpriseServerRegistryPath = "SOFTWARE\\WebsitePanel\\EnterpriseServer";
private 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"];
}
}
private bool EncryptionEnabled
{
get
{
return (ConfigurationManager.AppSettings["WebsitePanel.EncryptionEnabled"] != null)
? Boolean.Parse(ConfigurationManager.AppSettings["WebsitePanel.EncryptionEnabled"]) : true;
}
}
public 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 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 "";
}
}
private 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);
}
}
}

62
WebsitePanel/Sources/WebsitePanel.WebDavPortal/Cryptography/Rfc2898Cryptography.cs
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using System;
using System.IO;
using System.Security.Cryptography;
using System.Text;
namespace WebsitePanel.WebDavPortal.Cryptography
{
public class Rfc2898Cryptography : ICryptography
{
public string PasswordHash { get; set; }
public string SaltKey { get; set; }
public string VIKey { get; set; }
public Rfc2898Cryptography(string passwordHash, string saltKey, string viKey)
{
PasswordHash = passwordHash;
SaltKey = saltKey;
VIKey = viKey;
}
public string Encrypt(string plainText)
{
byte[] plainTextBytes = Encoding.UTF8.GetBytes(plainText);
byte[] keyBytes = new Rfc2898DeriveBytes(PasswordHash, Encoding.ASCII.GetBytes(SaltKey)).GetBytes(256/8);
var symmetricKey = new RijndaelManaged {Mode = CipherMode.CBC, Padding = PaddingMode.Zeros};
ICryptoTransform encryptor = symmetricKey.CreateEncryptor(keyBytes, Encoding.ASCII.GetBytes(VIKey));
byte[] cipherTextBytes;
using (var memoryStream = new MemoryStream())
{
using (var cryptoStream = new CryptoStream(memoryStream, encryptor, CryptoStreamMode.Write))
{
cryptoStream.Write(plainTextBytes, 0, plainTextBytes.Length);
cryptoStream.FlushFinalBlock();
cipherTextBytes = memoryStream.ToArray();
cryptoStream.Close();
}
memoryStream.Close();
}
return Convert.ToBase64String(cipherTextBytes);
}
public string Decrypt(string encryptedText)
{
byte[] cipherTextBytes = Convert.FromBase64String(encryptedText);
byte[] keyBytes = new Rfc2898DeriveBytes(PasswordHash, Encoding.ASCII.GetBytes(SaltKey)).GetBytes(256/8);
var symmetricKey = new RijndaelManaged {Mode = CipherMode.CBC, Padding = PaddingMode.None};
ICryptoTransform decryptor = symmetricKey.CreateDecryptor(keyBytes, Encoding.ASCII.GetBytes(VIKey));
var memoryStream = new MemoryStream(cipherTextBytes);
var cryptoStream = new CryptoStream(memoryStream, decryptor, CryptoStreamMode.Read);
var plainTextBytes = new byte[cipherTextBytes.Length];
int decryptedByteCount = cryptoStream.Read(plainTextBytes, 0, plainTextBytes.Length);
memoryStream.Close();
cryptoStream.Close();
return Encoding.UTF8.GetString(plainTextBytes, 0, decryptedByteCount).TrimEnd("\0".ToCharArray());
}
}
}