Mega Code Archive
Symmetric Encryption
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using System;
using System.IO;
using System.Security;
using System.Security.Cryptography;
using System.Collections.Generic;
using System.Text;
class Program
{
static void Main(string[] args)
{
RijndaelManaged rmCrypto = new RijndaelManaged();
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 };
string clearMessage = "this is a test";
FileStream fs = new FileStream("encrypted.dat", FileMode.Create);
CryptoStream cs = new CryptoStream(fs, rmCrypto.CreateEncryptor(key, IV), CryptoStreamMode.Write);
cs.Write(System.Text.ASCIIEncoding.ASCII.GetBytes(clearMessage),0, clearMessage.Length);
cs.Close();
fs.Close();
FileStream fs2 = new FileStream("encrypted.dat", FileMode.Open);
CryptoStream cs2 = new CryptoStream(fs2, rmCrypto.CreateDecryptor(key, IV), CryptoStreamMode.Read);
byte[] decryptedData = new byte[fs2.Length];
cs2.Read(decryptedData, 0, (int)fs2.Length);
cs2.Close();
fs2.Close();
Console.WriteLine(System.Text.ASCIIEncoding.ASCII.GetString(decryptedData));
}
}
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