Encrypt Decrypt Codes

Here is codes for basi cryptography,I did not write it but found on net and tested.

public static string Encrypt(string toEncrypt, string key, bool useHashing)

{

    byte[] keyArray;

    byte[] toEncryptArray = UTF8Encoding.UTF8.GetBytes(toEncrypt);

    if (useHashing)

    {

        MD5CryptoServiceProvider hashmd5 = new MD5CryptoServiceProvider();

        keyArray = hashmd5.ComputeHash(UTF8Encoding.UTF8.GetBytes(key));

    }

    else

        keyArray = UTF8Encoding.UTF8.GetBytes(key);

    TripleDESCryptoServiceProvider tdes = new TripleDESCryptoServiceProvider();

    tdes.Key = keyArray;

    tdes.Mode = CipherMode.ECB;

    tdes.Padding = PaddingMode.PKCS7;

    ICryptoTransform cTransform = tdes.CreateEncryptor();

    byte[] resultArray = cTransform.TransformFinalBlock(toEncryptArray, 0, toEncryptArray.Length);

    return Convert.ToBase64String(resultArray, 0, resultArray.Length);

}

public static string Decrypt(string toDecrypt, string key, bool useHashing)

{

    byte[] keyArray;

    byte[] toEncryptArray = Convert.FromBase64String(toDecrypt);

    if (useHashing)

    {

        MD5CryptoServiceProvider hashmd5 = new MD5CryptoServiceProvider();

        keyArray = hashmd5.ComputeHash(UTF8Encoding.UTF8.GetBytes(key));

    }

    else

        keyArray = UTF8Encoding.UTF8.GetBytes(key);

    TripleDESCryptoServiceProvider tdes = new TripleDESCryptoServiceProvider();

    tdes.Key = keyArray;

    tdes.Mode = CipherMode.ECB;

    tdes.Padding = PaddingMode.PKCS7;

    ICryptoTransform cTransform = tdes.CreateDecryptor();

    byte[] resultArray = cTransform.TransformFinalBlock(toEncryptArray, 0, toEncryptArray.Length);

    return UTF8Encoding.UTF8.GetString(resultArray);

}