# Sentinel LDK Data Protection Utility

The Sentinel® LDK Data Protection utility (also referred to as DataHASP utility) is an innovative component of Sentinel LDK that enables you to protect data files that are accessed by a protected application.

Each application that has been protected using Sentinel LDK Envelope contains the Data Protection module. This module enables the protected application to read and write encrypted data to disk. You can use the Data Protection utility to provide initial encrypted application data that is installed together with the protected application

The following diagram illustrates how application data is pre-encrypted, and then afterward accessed by the protected application.

For more information, see the description of the Data Protection utility in the Sentinel LDK Software Protection and Licensing Guide.

### Related Topics

Data Protection Utility Window

Data Protection Utility Prerequisites