private static string EncryptForObscurity(string dataToEncrypt, int randomization)
{
if (string.IsNullOrWhiteSpace(dataToEncrypt))
{
return(dataToEncrypt);
}
byte[] key = RandomStringGenerator.GetBytesFromString(encryptKeyArray[randomization]);
byte[] iv = RandomStringGenerator.GetBytesFromString(initVectorArray[randomization]);
byte[] inputBytes = RandomStringGenerator.GetBytesFromString(dataToEncrypt);
var des3Encrypt = CreateEncryptor();
MemoryStream mstream = new MemoryStream();
CryptoStream cstream = new CryptoStream(mstream, des3Encrypt, CryptoStreamMode.Write);
cstream.Write(inputBytes, 0, inputBytes.Length);
cstream.FlushFinalBlock();
byte[] encryptedDataBytes = mstream.ToArray();
mstream.Close();
cstream.Close();
return(randomization.ToString() + separator + RandomStringGenerator.ToEncodedString(encryptedDataBytes));
}
private static string DecryptForObscurity(string dataToDecrypt, int randomization)
{
if (string.IsNullOrWhiteSpace(dataToDecrypt))
{
return(dataToDecrypt);
}
byte[] decryptedDataBytes = null;
MemoryStream mstream = null;
CryptoStream cstream = null;
try
{
byte[] key = RandomStringGenerator.GetBytesFromString(encryptKeyArray[randomization]);
byte[] iv = RandomStringGenerator.GetBytesFromString(initVectorArray[randomization]);
byte[] encryptedBytes = RandomStringGenerator.FromEncodedString(dataToDecrypt);
TripleDESCryptoServiceProvider des3provider = new TripleDESCryptoServiceProvider();
des3provider.Mode = CipherMode.CBC;
ICryptoTransform des3decrypt = des3provider.CreateDecryptor(key, iv);
mstream = new MemoryStream();
cstream = new CryptoStream(mstream, des3decrypt, CryptoStreamMode.Write);
cstream.Write(encryptedBytes, 0, encryptedBytes.Length);
cstream.FlushFinalBlock();
decryptedDataBytes = mstream.ToArray();
}
catch
{
//swallow errors
}
finally
{
if (mstream != null)
{
mstream.Close();
}
if (cstream != null)
{
cstream.Close();
}
}
if (decryptedDataBytes == null)
{
return(null);
}
else
{
return(RandomStringGenerator.GetStringFromBytes(decryptedDataBytes));
}
}
public static string ComputeHash(string password, string salt, SaltMethod saltMethod = SaltMethod.DoubleSalt, HashSize hashSize = HashSize.S160)
{
if (string.IsNullOrWhiteSpace(password))
{
throw new ArgumentNullException("password");
}
if (string.IsNullOrWhiteSpace(salt))
{
throw new ArgumentNullException("salt");
}
string saltedPassword = GetSaltedPassword(password, salt, saltMethod);
byte[] bytesOfString = RandomStringGenerator.GetBytesFromString(saltedPassword);
byte[] hash = ComputeHash(bytesOfString, hashSize);
return(RandomStringGenerator.ToEncodedString(hash));
}
public static string Encrypt(string dataToEncrypt)
{
if (string.IsNullOrWhiteSpace(dataToEncrypt))
{
return(dataToEncrypt);
}
byte[] inputBytes = RandomStringGenerator.GetBytesFromString(dataToEncrypt);
var des3Encrypt = CreateEncryptor();
MemoryStream mstream = new MemoryStream();
CryptoStream cstream = new CryptoStream(mstream, des3Encrypt, CryptoStreamMode.Write);
cstream.Write(inputBytes, 0, inputBytes.Length);
cstream.FlushFinalBlock();
byte[] encryptedDataBytes = mstream.ToArray();
mstream.Close();
cstream.Close();
return(RandomStringGenerator.ToEncodedString(encryptedDataBytes));
}