Sentinel LDK

Thales's premiere licensing and protection product.

The Sentinel LDK software licensing toolkit secures and monetizes all software, including AI-powered software, while defending against license misuse and protecting against AI-assisted reverse engineering.

BENEFITS

Why Choose Thales Sentinel LDK

Protect Your Software and Revenue

Protect Your Software and Revenue

Stop unauthorized use before it puts software revenue at risk.

  • Prevent piracy, copying, and license misuse with secure runtime enforcement.
  • Protect code, AI models, and intellectual property from tampering and reverse engineering.
  • Control access to applications and premium features based on valid license rights.

Sell the Way Your Customers Want to Buy

Support go-to-market with licensing capabilities that scale with every stage of business growth.

  • Launch subscription, usage-based, feature-based, user-based, and perpetual offerings from a single solution.
  • Support new pricing and packaging strategies as customer expectations change.
  • Shift models over time without adding complexity to how you sell, deliver, or enforce software access.
Sell the Way Your Customers Want to Buy

Scale Without Adding Licensing Complexity

Scale Without Adding Licensing Complexity

Deliver licensing that adapts to your business needs and customers’ environments.

  • Deliver licenses through hardware keys, software-based licenses, or cloud licensing.
  • Use the same API approach across different license containers and deployment models.
  • Support customer-managed and offline environments without separate licensing workflows.
CORE CAPABILITIES

The Smarter Way to License

Sentinel LDK's powerful capabilities put everything you need in one place to protect your software, give customers flexible licensing that's easy to use, and streamline operations from day one.

    Sentinel LDK helps vendors operationalize modern licensing and monetization models.

    Launch subscription, usage-based, feature-based, and hybrid offerings without rebuilding enforcement.

    • Subscription licensing
    • Time-based licensing
    • Feature-based licensing
    • Usage-based licensing
    • User-based licensing
    • Concurrent licensing
    • Perpetual licensing

    Need something you don’t see on the list. We can probably support it. Get in touch here.

    Sentinel LDK enforces the commercial rights behind every software sale.

    This ensures customers can only access the products, features, and usage rights they have purchased.

    • Enforcement based on access to specific product features
    • Enforcement based on purchased capacity limits
    • Enforcement based on a defined license term or expiration date
    • Enforcement based on a device fingerprint
    • Enforcement based on named or authenticated users
    • Enforcement based on authenticated machines
    • Enforcement based on usage limits, including pre- and postpaid models
    • Enforcement based on the number of users or sessions active at the same time
    • Enforcement based on shared license access from a central license pool

    Sentinel LDK protects licenses against copying, tampering, and unauthorized reuse. This ensures licenses remain secure and enforceable throughout their lifecycle. Optimized for security-sensitive deployments.

    • Cryptographically secure licenses
    • Anti-cloning and copy protection
    • License integrity validation
    • Secure storage of license data
    • Protection against license tampering and tracing
    • Trusted enforcement at runtime

    Learn more about Envelope

    LDK integrates with Envelope protection to protect software IP, proprietary algorithms, AI models, and from AI-assisted reverse engineering and vulnerability detection.

    • Executable and library encryption
    • Code obfuscation
    • Anti-debugging
    • Anti-tampering
    • Key disabling
    • And more

    Learn more about Envelope

    One licensing foundation supports desktop, SaaS, embedded, IoT, hybrid, and air-gapped environments with hardware-based, software-based, and cloud-based enforcement technologies.

    • Sentinel HL hardware-based licensing
    • Sentinel SL software-based licensing
    • Sentinel CL cloud licensing
    • Virtual machine support
    • Container support
    • Air-gapped environments
    • Embedded and edge deployments

    Sentinel LDK enables deployed licenses to be renewed, extended, revised, or revoked remotely whether products are deployed online or offline. Vendors can adapt customer entitlements without replacing keys or disrupting deployments.

    Capabilities

    • Remote license renewal
    • License extension
    • License revision
    • License revocation
    • Updates to deployed Sentinel protection keys
    • Post-deployment entitlement changes

    Sentinel LDK toolkit works in parallel with Sentinel EMS to connect enforcement with entitlement management. This creates a unified foundation for translating commercial models into operational reality.

    • Fast, code-free product configuration so you can bundle features for quick and flexible new product introduction.
    • Full ecosystem integration with enterprise business and subscription management platforms as well as with MCP servers.
    • Collection, mediation, and management of usage data from hundreds of applications and services.
    • Customer self-service portals.
    • Configurable webhooks and notifications.
    • Integration with third-party licensing.

    Learn more about Entitlement Management

    Sentinel LDK captures software usage data, allowing customers to route, analyze, and use usage data for critical business needs.

    • Usage to power new billing models. LDK collects usage in online or offline deployments, and independently from your billing system, so you can use usage data with the system and model of your choice. Support all consumption-based billing models, including prepaid, postpaid, and pay-per-use.
    • Usage to power revenue expansion. Give sales and customer success teams usage and entitlement insights directly in their CRM. Make it easy to stay ahead with alerts that surface expansion opportunities, adoption gaps, and accounts that need attention. (Powered by Sentinel Pulse
    • Usage to prioritize your product roadmap. See which products and features customers use most. Give product teams trusted data to prioritize development around demonstrated demand.

    Learn more about Usage Monetization

    How it Works

    Sentinel LDK Fits Into Your Licensing and Fulfillment Workflow

    • Customers get exactly what they paid for. LDK pulls entitlement data from your Entitlement Management System or business systems like your CRM and e-commerce platform.
    • No manual work, no gaps in enforcement. LDK activates, validates, and protects your software the moment it reaches the end user.
    • Usage becomes a lever for the business, not just data. LDK captures usage in real time, so it can be metered and mediated to support core business goals.
    • Explore the complete Thales software licensing platform for monetization, entitlement management, and license enforcement.
    Sentinel LDK

    Sentinel Envelope

    Software Monetization for the Age of AI

    AI expands what software can do and raises the value of the IP behind it. It also gives attackers faster, AI-assisted ways to reverse engineer products and circumvent licensing controls.

    Sentinel LDK gives vendors a proven way to respond, with the ability to monetize any software product, including AI-powered applications, while keeping control of how it is used. As products and threats evolve, LDK gives you the confidence to bring new technology to market and protect its value.

    Trusted by Industry Leaders Across the Globe

    With Thales, we can both validate our licensing and protect our software – a double win.”
    Sheena Skinner Product Manager Golden Software
    Golden Software
    Our life was complicated. You spend days and days days to make sure software is licensed correctly and protected correctly. With your solution, we saved a lot of time.
    Ali Rezgui Business Director Michelin Simulation Services
    Michelin
    We are an equipment manufacture... but we are focused on software sales and monetization ... and Thales is the expert in monetization. "
    Satoshi Okada Manager of K-D2 PLANNER® Kobelco
    Kobelco
    Sentinel helps us achieve our business goals, including IP protection, customer satisfaction, streamlined operations, and revenue generation."
    Subin Lee CEO Cochl
    Cochl
    Our customers look to us for efficient farming software. They therefore appreciate that our software is licensed and distributed with utmost efficiency in a customer-centric way."
    Ilija Panov Head of Global IT INF-Cloud, Integration & Identities CLAAS
    CLAAS
    Thales has played a vital role in protecting the core technology of our AI solution…"
    Minhong Jang Co-founder & Chief Business Officer Lunit
    Lunit

    Explore Sentinel LDK with a Free Trial

    See how Sentinel LDK can license and protect your software through a free 30-day trial tailored to your business goals. Work with Thales's licensing experts to assess how it fits your products, deployment environments, and monetization plans.