/// <param name="algorithm">The symmertric algorithm (Aes, DES, RC2, Rijndael and TripleDES).</param>
/// <param name="plainText">The plain text need to be encrypted.</param>
/// <param name="key">The secret key to encrypt plain text.</param>
/// <param name="iv">The iv should be 16 bytes.</param>
/// <param name="salt">Salt to encrypt with.</param>
/// <param name="pwdIterations">The number of iterations for plain text.</param>
/// <param name="keySize">Size of the key.</param>
/// <param name="cipherMode">The cipher mode.</param>
/// <param name="paddingMode">The padding mode.</param>
/// <returns></returns>
public static byte[] Encrypt(SymmetricAlgorithm algorithm, byte[] plainText, string key, string iv,
    string salt, int pwdIterations, int keySize, CipherMode cipherMode, PaddingMode paddingMode)
{

    if (null == plainText)
        throw new ArgumentNullException("plainText");
    if (null == algorithm)
        throw new ArgumentNullException("algorithm");
    if (String.IsNullOrEmpty(key))
        throw new ArgumentNullException("key");
    if (String.IsNullOrEmpty(iv))
        throw new ArgumentNullException("iv");
    if (String.IsNullOrEmpty(salt))
        throw new ArgumentNullException("salt");

    // Note the salt should be equal or greater that 64bit (8 byte).
    var rfc = new Rfc2898DeriveBytes(key, salt.ToByteArray(), pwdIterations);
    using (SymmetricAlgorithm symmAlgo = algorithm)
    {
        symmAlgo.Mode = cipherMode;
        //symmAlgo.Padding = paddingMode;
        byte[] cipherTextBytes = null;
        using (var encryptor = symmAlgo.CreateEncryptor(
            rfc.GetBytes(keySize / 8), iv.ToByteArray()))
        {
            using (var ms = new MemoryStream())
            {
                using (var cs = new CryptoStream(
                    ms, encryptor, CryptoStreamMode.Write))
                {
                    cs.Write(plainText, 0, plainText.Length);
                    cs.FlushFinalBlock();
                    cipherTextBytes = ms.ToArray();
                    ms.Close();
                    cs.Close();
                }
            }
            symmAlgo.Clear();
            return cipherTextBytes;
        }
    }
}