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  1. using System;
  2. using System.Security.Cryptography;
  3.  
  4. public class Test
  5. {
  6.     public static void Main()
  7. 	{            
  8. 		Console.WriteLine(EncryptString("test", "123456"));
  9. 	}
  10.  
  11.     public static string EncryptString(string Message, string Passphrase)
  12.     {
  13.         byte[] Results;
  14.         System.Text.UTF8Encoding UTF8 = new System.Text.UTF8Encoding();
  15.  
  16.         // Step 1. We hash the passphrase using MD5
  17.         // We use the MD5 hash generator as the result is a 128 bit byte array
  18.         // which is a valid length for the TripleDES encoder we use below
  19.  
  20.         SHA256CryptoServiceProvider HashProvider = new SHA256CryptoServiceProvider();
  21.         byte[] temp = HashProvider.ComputeHash(UTF8.GetBytes(Passphrase));
  22.         byte[] key = new byte[24];
  23.         Array.Copy(temp, key, 24);
  24.  
  25.         // Step 2. Create a new RijndaelManaged object
  26.         TripleDESCryptoServiceProvider crypt = new TripleDESCryptoServiceProvider();
  27.  
  28.         // Step 3. Setup the encoder
  29.         crypt.Key = key;
  30.         crypt.Mode = CipherMode.ECB;
  31.         crypt.Padding = PaddingMode.PKCS7;
  32.  
  33.         // Step 4. Convert the input string to a byte[]
  34.         byte[] DataToEncrypt = UTF8.GetBytes(Message);
  35.  
  36.         //Console.WriteLine( Convert.ToBase64String(DataToEncrypt));
  37.  
  38.         ICryptoTransform cTransform = crypt.CreateEncryptor();
  39.  
  40.         // Step 5. Attempt to encrypt the string
  41.         try
  42.         {
  43.             ICryptoTransform Encryptor = crypt.CreateEncryptor();
  44.             Results = Encryptor.TransformFinalBlock(DataToEncrypt, 0, DataToEncrypt.Length);
  45.         }
  46.         finally
  47.         {
  48.             // Clear the crypt and Hashprovider services of any sensitive information
  49.             crypt.Clear();
  50.             HashProvider.Clear();
  51.         }
  52.  
  53.         // Step 6. Return the encrypted string as a base64 encoded string
  54.         return Convert.ToBase64String(Results);
  55.     }
  56. }
Success #stdin #stdout 0.05s 37200KB
comments (?)
stdin 
Standard input is empty
stdout 
ylb5KsQvROs=
https://ideone.com/emTLD9
language:
C# (gmcs 5.20.1)
created:
12 years ago
visibility:
public

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