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Software Licensing and Software Copy Protection for Windows Applications

CrypKey SDK

Superior software licensing and protection for program developers.

The comprehensive copy protection and software licensing solution.

CrypKey SDK (software developer kit) is a proven encryption tool that protects your software against illegal copying and unauthorized use. It’s a software-based solution, which means customers who use your CrypKey-protected application do not require a hardware key (i.e., a dongle). CrypKey SDK offers developers advanced functionality, customization, and control.

The developer’s choice for software protection and licensing.

CrypKey SDK offers maximum flexibility for implementing customized copy protection and licensing strategies. With CrypKey SDK, you embed the function calls into the source code of your application.

Which CrypKey product is right for you?

Review a comprehensive and comparative description of the features and functionality of CrypKey SDK and CrypKey Instant. Compare Products →
Complex licensing? Review the features and functionality of CrypKey SDK Enterprise with License File Expander.

Product Support

Protect your investment in CrypKey by taking advantage of our flexible and comprehensive technical support. We maximize our software protection service by offering three Annual Subscription support options: Silver, Gold, and Platinum.

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