C#文件加密方法汇总

        {
            if (EncryptByte.Length == 0) { throw (new Exception("明文不得为空")); }
            if (string.IsNullOrEmpty(EncryptKey)) { throw (new Exception("密钥不得为空")); }
            byte[] m_strEncrypt;
            byte[] m_btIV = Convert.FromBase64String("Rkb4jvUy/ye7Cd7k89QQgQ==");
            byte[] m_salt = Convert.FromBase64String("gsf4jvkyhye5/d7k8OrLgM==");
            Rijndael m_AESProvider = Rijndael.Create();
            try
            {
                MemoryStream m_stream = new MemoryStream();
                PasswordDeriveBytes pdb = new PasswordDeriveBytes(EncryptKey, m_salt);
                ICryptoTransform transform = m_AESProvider.CreateEncryptor(pdb.GetBytes(32), m_btIV);
                CryptoStream m_csstream = new CryptoStream(m_stream, transform, CryptoStreamMode.Write);
                m_csstream.Write(EncryptByte, 0, EncryptByte.Length);
                m_csstream.FlushFinalBlock();
                m_strEncrypt = m_stream.ToArray();
                m_stream.Close(); m_stream.Dispose();
                m_csstream.Close(); m_csstream.Dispose();
            }
            catch (IOException ex) { throw ex; }
            catch (CryptographicException ex) { throw ex; }
            catch (ArgumentException ex) { throw ex; }
            catch (Exception ex) { throw ex; }
            finally { m_AESProvider.Clear(); }