Enterprise Protection That Fuels Growth

Instantly harden your applications with encryption, obfuscation, and anti-reverse engineering — all without touching your source code.

Inside Sentinel Envelope

Learn how the Sentinel Envelope solution outperforms lightweight tools or in-house builds.

To find out more about the collection and processing of your personal data, pleaseclick here.

You have the right to access your personal data. You may also request the correction or deletion of your personal data. You also have the right to withdraw your consent or to object to the processing of your personal data and to request that such processing be restricted. Finally, you can request your personal data to be sent to you in a structured and standard format.

To exercise your rights or make a complaint, please click here.

You may also contact the Thales Group Data Protection Officer by sending an e-mail to dataprotection@thalesgroup.com.

In all cases, you have the right to lodge a complaint with the competent data protection authority.

Trusted by leading enterprises worldwide

52B+ Revenue Protected
4000+ Vendors Using
1.2 M+ Files Protected

Mitigate your core software and IP risks

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Prevent revenue loss from unauthorized use

By preventing copying and ensuring only licensed users can run your software

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Safeguard your
competitive edge

By making it harder for hostile actors to reverse engineer, modify, or extract your IP

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Expand into new or
high-risk markets

By reducing IP exposure when distributing or deploying software globally without engineering effort

Stronger Security. Faster Implementation. Lower Risk.

Teams often underestimate the long-term cost and risk of relying on in-house or open-source protection tools. Sentinel Envelope reduces the burden with a proven protection solution used across hundreds of thousands of deployments and proven to withstand real-world attacks.

  • Deploy in hours, not months—zero source code changes required
  • Reduce in-house protection maintenance and overhead
  • Confidently scale your business without expanding your attack surface
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What enterprise leaders say

Frequently asked questions

Sentinel Envelope is an automatic file packer with advanced security capabilities. It works together with licensing keys to protect your product from reverse engineering, tampering, piracy, and more.

Sentinel encrypts and obfuscates your binaries, makes logic and algorithms difficult to understand and access, prevents debugging, and validates integrity at runtime — making it far harder for attackers to view or steal your proprietary IP.

In addition, Sentinel keys (software, cloud, or hardware) provide the Envelope with a cryptography engine, used for decryption of protected binaries and validation of licenses and encryption/decryption of data files and machine learning models.

  • Native binaries:
    • Windows x86, x64, ARM
    • Linux x86, x64, ARM


The windows and Linux native binary protection is programing language agnostic, so if the binary is standard, the Envelope works regardless of programing language used to develop it.

  • Managed code languages and scripts
    • JAVA
    • .NET
    • Python

Yes. Sentinel provides applications that integrate AI features with strong protection from used by unauthorized users and from being reverse engineered, utilizing encryption and runtime protection. Common ML frameworks like PyTorch and TensorFlow are fully supported

IoT devices are often deployed in remote, untrusted environments where protection is critical but challenging.

  • For IoT devices running supported operating systems (like Linux): the complete suite of Envelope protection technologies are supported.
  • For constrained devices without an OS: Sentinel utilizes secure and lightweight licensing APIs to enforce licensing. Additionally, Sentinel provides a licensing REST API that can be used with virtually any programming language.


Contact your Thales representative to discuss protection strategies for resource-constrained or non-standard IoT deployments.

Dongles are beneficial in scenarios where the highest level of security is needed, and in scenarios where the license needs to be portable, including in sites with no connectivity.

Security: Sentinel dongles, including Sentinel HL (also known as HASP) still provide the highest level of security against copying and IP protection because the attacker has less access if the code execution takes place on a dongle/USB and not on the computer.

Portability: You can easily disconnect the license from one machine and attach it to another. You just stick the USB stick into the new machine. (This is possible with software-based keys also using a re-host, but it requires more steps and a USB drive.)

Customer Voices

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Are you ready to protect your software and safeguard your IP?

Download the Sentinel Envelope technical brief or click contact us to talk to a Thales specialist about your protection requirements