Encrypt and Decrypt Passwords using Cryptostream

using System.Security.Cryptography;

Encryption

protected void EncryptIt(string Password)
{
byte[] data = System.Text.ASCIIEncoding.ASCII.GetBytes(Password);
byte[] rgbKey = System.Text.ASCIIEncoding.ASCII.GetBytes("56565656");
byte[] rgbIV = System.Text.ASCIIEncoding.ASCII.GetBytes("78787878");

//1024-bit encryption
MemoryStream memoryStream = new MemoryStream(1024);
DESCryptoServiceProvider desCryptoServiceProvider =
new DESCryptoServiceProvider();

CryptoStream cryptoStream = new CryptoStream(memoryStream,
desCryptoServiceProvider.CreateEncryptor(rgbKey, rgbIV),
CryptoStreamMode.Write);

cryptoStream.Write(data, 0, data.Length);
cryptoStream.FlushFinalBlock();

byte[] result = new byte[(int)memoryStream.Position];
memoryStream.Position = 0;
memoryStream.Read(result, 0, result.Length);

cryptoStream.Close();

string toDecrypt = System.Convert.ToBase64String(result);

DecryptIt(toDecrypt);
}

Decryption

protected void DecryptIt(string toDecrypt)
{
byte[] data = System.Convert.FromBase64String(toDecrypt);
byte[] rgbKey = System.Text.ASCIIEncoding.ASCII.GetBytes("56565656");
byte[] rgbIV = System.Text.ASCIIEncoding.ASCII.GetBytes("78787878");

MemoryStream memoryStream = new MemoryStream(data.Length);

DESCryptoServiceProvider desCryptoServiceProvider =
new DESCryptoServiceProvider();

CryptoStream cryptoStream = new CryptoStream(memoryStream,
desCryptoServiceProvider.CreateDecryptor(rgbKey, rgbIV),
CryptoStreamMode.Read);

memoryStream.Write(data, 0, data.Length);
memoryStream.Position = 0;

string decrypted = new StreamReader(cryptoStream).ReadToEnd();

cryptoStream.Close();
}