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Sentinel LDK

Out-of-the-box Software Protection, Licensing,and Entitlement Management System

Sentinel License Development Kit (LDK) is a comprehensive software monetization solution that pairs the company’s award-winning software copy and intellectual property (IP) protection features with the web-based, license management capabilities of Sentinel EMS, SafeNet’s entitlement management system. Sentinel EMS can be hosted on premise or on Sentinel Managed Application Hosting Services for improved delivery, reliability and security.

Sentinel LDK also features three best of class protection types i.e. Sentinel HL, Sentinel SL and Sentinel CL. Whether you ship physical boxes, embed your software into high-tech devices, offer electronic delivery, or deliver your product as a service in the cloud, our various protection types have you covered. Featuring SafeNet’s innovative and unique Cross-Locking™ technology, Sentinel LDK enables you to leverage any combination of hardware or software license delivery and locking options. Each protection type has its own unique benefits:

Sentinel HL Hardware-based Licensing with Sentinel HL – Sentinel HL family of keys offers the highest level of copy and IP protection available. Offered in a wide variety of types and form factors, the Sentinel HL keys protect software by allowing access and execution of the application only when the key is physically connected. Sentinel HL keys are ideal for software publishers whose primary concern is security. They are ideal for scenarios where the protected application runs on a device that supports USB or ExpressCard, with additional options for embedding directly on circuit boards.

Sentinel SL Software-based Licensing with Sentinel SL – Sentinel SL keys are virtual software-based keys built on the Sentinel HL protection technology and residing in the secure storage of your end-user’s machine. The use of Sentinel SL eliminates the need to ship a physical product, enabling end users to quickly install and start using the application. Sentinel SL is ideal for software publishers whose end users require more flexible license delivery methods.

Sentinel CL Cloud-based Licensing with Sentinel CL – Sentinel Cloud Licensing is a software protection type that is provided as a solution in the cloud. Integration of Sentinel Cloud into your software products allows for user-centric licensing, letting users access your software from any of their devices and Virtual Machines. This protection type is ideal for software publishers who want to enjoy benefits like automatic and immediate license enablement, improved usage-tracking and post-pay business model opportunities.

As a result, Sentinel LDK will deliver software publishers a comprehensive, out-of-the-box software monetization solution that will better enable them to confidently protect their software and simplify operational processes while enhancing the end-user experience and ultimately maximizing their software revenues. Implementing Sentinel LDK, software vendors get enabled with:

  • Software Copy And IP Protection Maximize profitability by preventing unauthorized use and distribution of software, and by securing competitive IP.
  • Flexible Software Catalog Management - Easily introduce innovative, flexible, and customer-centric offerings into new markets
  • Consolidate and Automate Licensing Operations - Eliminate manual operational tasks associated with licensing to save time, minimize errors, and reduce costs
  • End-User License Management Tools - Increase end-user transparency and reduce licensing support costs while improving customer satisfaction
  • Advanced Virtualization Support - Increased security for new virtualization concepts such as Live Migration, e.g. VMware vSphere vMotion, by using the industry’s first and only FQDN (Fully Qualified Domain Name) locking
  • Detailed Tracking and Reporting - Gain insight into how, when, and by whom your software is being activated and used to improve product and business decision-making capabilities

Sentinel LDK is the first and only licensing solution providing hardware, software, and cloud-based license delivery, locking, and management options all in a single solution. This paired with the company’s dedicated commitment to ongoing enhancements around usability, end-user transparency, integration, and security guarantees our customers that when they choose Sentinel, they choose the tools required to deploy a licensing and entitlement management framework right for their business objectives today, tomorrow, and beyond.

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Supported Operating Systems


Sentinel LDK Run-time Environment 

  • Windows (x86) XP SP3
  • Windows (x64) XP SP2
  • Windows Vista SP2
  • Windows 7 SP1
  • Windows 8.1 SP1
  • Windows Server 2003 SP2
  • Windows 2008 SP2
  • Windows 2008 R2 SP1
  • Windows Server 2012 R2
  • Windows 10

(x86 only) Windows XP Embedded standard

(x86 only) Windows 7 SP1 Embedded standard


Sentinel LDK Vendor Tools (x86 and x64)

  • Windows XP SP3
  • Windows Vista SP2
  • Windows 7 SP1
  • Windows 8.1 SP1
  • Windows Server 2003 SP2
  • Windows 2008 SP2
  • Windows 2008 R2 SP1
  • Windows Server 2012 R2
  • Windows 10

Note: The latest service packs and security updates must be installed.


Sentinel EMS Service (x86 and x64)

  • Windows XP SP3(x86) and SP2(x64)
  • Windows Server 2003 SP2
  • Windows 2008 SP2
  • Windows 2008 R2 SP1
  • Windows Server 2012 R2
  • Windows Vista SP2
  • Windows 7 SP1
  • Windows 8.1 SP1
  • Windows 10



  • Microsoft SQL Server 2005 x86/x64
  • Microsoft SQL Server 2005 Express Edition (must be enabled for remote connections) x86/x64
  • Microsoft SQL Enterprise 2008 x86/x64
  • Microsoft SQL Enterprise 2008 R2 x86/x64
  • Microsoft SQL Server 2012 x86/x64
  • Microsoft SQL Server 2012 R2 x86/x64
  • Microsoft SQL Server 2014 x86/x64 


  • Sentinel LDK Run-time Environment and Vendor Tools:

    • Mac OS X 10.7.5
    • Mac OS X 10.8.5
    • Mac OS X 10.9.5
    • Mac OS X 10.10
    • Mac OS X 10.11


  • Sentinel LDK Run-time Environment and Vendor Tools:
    • OpenSUSE 12.3, 13.2 (x86 and x86_64)
    • Red Hat EL 6.6, 7.1 (x86 and x86_64)
    • Ubuntu Desktop and Server 12.04.3 (x86 and x86_64)
    • Ubuntu Server 14.04 (x86 and x86_64)
    • Debian 6.0.10, 8.1 (x86 and x86_64)
    • CentOS 7.1 (x86 and x86_64)
    • Linux ARM with Sentinel LDK Embedded

Note: The latest service packs and security updates must be installed.

  • Sentinel LDK Run-time Environment was tested on Linux platforms with Wine 1.7.28



  • Sentinel Envelope supports Android applications designed for the following versions: 4.1.1, 4.2.2, 4.3, 4.4.2, 5.x
  • Only the Android ARM platform is supported (x86 and MIPS platforms are not supported)


Note:  The operating system versions listed herein were tested by SafeNet and verified to be fully compatible with Sentinel LDK. Older operating system versions are likely to be fully compatible as well, but are not guaranteed. For reasons of compatibility and security, SafeNet recommends to always keep your operating system up to date with the latest fixes and service packs.


Supported VM Platforms

Sentinel LDK supports installing protected applications on the following VM platforms:

  • Virtual Box 4.3.28
  • VMware Player 6.0.3
  • Hyper-V Server 2012 R2 (SL only)
  • VMware Workstation 11.1
  • VMware ESXi 5.5
  • XEN 4.5
  • KVM (RHEL 7.0, Ubuntu 14.04 Server, Debian 8.x)
  • Parallel Desktop 9 for Mac


Supported Web Browsers


The Sentinel EMS user interface can be accessed using the following Web browsers:

  • Microsoft Internet Explorer versions 8, 9, 10, 11
  • Mozilla Firefox (32-bit) versions 40 or later

Note: You must use a 32-bit Web browser for any action in Sentinel EMS that accesses a protection key (such as burn, recycle, check in key, or online activation). You can perform all other actions in Sentinel EMS using a 32-bit or 64-bit Web browser.

 Admin Control Center

  • Microsoft Internet Explorer (32-bit) versions 8, 9, 10,11
  • Microsoft Edge
  • Mozilla Firefox (32-bit) version 22
  • Google Chrome (32-bit) version 23 or later
  • (Mac) Safari 5.0, 6.0


View Features & Benefits Resource Library
  • Protect Once, Deliver Many, Evolve Often design philosophy which separates business and engineering processes enabling software publishers to  maximize operational efficiency and business agility. 
  • Flexible Licensing options for supporting the industry’s broadest selection of business models from perpetual and time-based models to usage based and subscription plans.
  • Cross-Locking technology enabling software publishers to enforce their software licensing strategy with any combination of hardware- or software-based keys.
  • Award-Winning Security Features like Sentinel Envelope with AppOnChip, White-box Cryptography and many more for protecting applications from unauthorized use, distribution, tampering, and reverse-engineering.
  • Sentinel EMSa centralized web-based platform which enables software publishers and their end-user to effectively manage their entitlements, from delivery and activation to lifecycle management and tracking.
  • Protection for Video Content enables content providers to protect, encrypt, and license individual video files. Licensing and protection of such video content ensures that the viewers can only view the protected files when a Sentinel LDK license (SL or HL) is present on the machine.
  • Secured Time-Based Licensing with Sentinel V-Clock which prevents time tampering without on-board battery for Real Time Clock.
  • Managed Services for your convenience. Sentinel EMS can be hosted on Sentinel Managed Application Hosting Services which offers improved delivery, reliability and security.
  • Sentinel Insight providing detailed usage tracking and reporting resources for software publishers and their end-users.
  • Maximize Revenue - By preventing unauthorized use and or distribution of your software you ensure fair compensation for all use of your products and services.
  • Enhanced End-User Experience - Empowering end-users to manage certain aspects of their deployment not only reduces costs, but dramatically increases end-user satisfaction.
  • Business Agility - Make changes to your product packaging, licensing, and pricing models on-the-fly to respond instantly to new and evolving markets. 
  • Reduced Cost - Eliminate the packaging burden oftern carried by most development organizations and reduce manual, time-consuming support and customer service tasks.
  • Business Intelligence - Activation history and feature usage information helps drive business decisions
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