/* C# Network Programming by Richard Blum Publisher: Sybex ISBN: 0782141765 */ using System; using System.IO; using System.Security; using System.Security.Cryptography; using System.Text; public class CryptoTest { public static void Main() { Console.Write("Enter phrase to encrypt: "); string phrase = Console.ReadLine(); MemoryStream memstrm = new MemoryStream(); byte[] Key = {0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16}; byte[] IV = {0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16}; TripleDESCryptoServiceProvider tdes = new TripleDESCryptoServiceProvider(); CryptoStream csw = new CryptoStream(memstrm, tdes.CreateEncryptor(Key, IV), CryptoStreamMode.Write); csw.Write(Encoding.ASCII.GetBytes(phrase), 0, phrase.Length); csw.FlushFinalBlock(); byte[] cryptdata = memstrm.GetBuffer(); Console.WriteLine("Encrypted: {0}", Encoding.ASCII.GetString(cryptdata, 0, (int)memstrm.Length)); memstrm.Position = 0; byte[] data = new byte[1024]; CryptoStream csr = new CryptoStream(memstrm, tdes.CreateDecryptor(Key, IV), CryptoStreamMode.Read); int recv = csr.Read(data, 0, data.Length); string newphrase = Encoding.ASCII.GetString(data, 0, recv); Console.WriteLine("Decrypted: {0}", newphrase); csr.Close(); csw.Close(); memstrm.Close(); } }