# Introducing Sentinel LDK Envelope for Mac

Sentinel LDK Envelope is an application that automatically wraps your Mac binaries (Mach-o executables and shared libraries) with a protective shield. The application provides advanced protection features to enhance the overall level of security of your software.

Implementing Sentinel LDK Envelope protection is the fastest way to secure your software, and does not require you to alter your source code. You simply use the Sentinel LDK Envelope graphical interface to apply protection parameters to your executable files and shared dynamic libraries. In addition, you can modify protection parameters and customize the messages that are displayed to end users who are running your protected applications.

Once you have set up the Sentinel LDK Envelope project for an application, you can run Sentinel LDK Envelope from a command-line prompt. This enables you to easily re-apply protection to the application.

The following concepts are vital to understanding the use and functionality of Sentinel LDK Envelope:

>Projects

>Features

### Related Topics

Adding a Program to a Project

Working with Binaries

Protection Parameters

Sentinel Vendor Code

Customizing User Messages

Command Line Sentinel LDK Envelope

Considerations for Protecting Mac Applications