Windows Software Developer Tools Java Extension available
Providing Superior Protection
and Licensing Tools since 1992
CrypKey SDK

Superior software protection for program developers.

  • Flexible API keeps you (the developer) in control
  • Flexible licensing models include perpetual, day limited, use limited, floating network and USBKey locked
  • Exclusive CloneBuster and Stealth anti-hacking technologies

The comprehensive software copy protection and 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 is Right for You?

Review a comprehensive and comparative description of CrypKey SDK and CrypKey Instant features and functionality.

Complex licensing? Review the features and functionality of CrypKey SDK Enterprise with License Expander.

Product Support

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

System Requirements
  • 133 MHz (or higher) Pentium-compatible CPU
  • 64 MB of RAM (recommended minimum)
  • 2GB hard disk with a minimum of 650MB of free space
  • Windows 2003, XP, Vista, Windows 7 (32 and 64 bit)
back to top



The purpose of this letter is to thank you and your staff for all of the commitment you have shown in helping provide VSS with a turn-key registration e-commerce solution. A special compliment goes out to your customer support. Your customer support demonstrated a high level of technical knowledge and competence in providing technical service for your product line. Please extend to the group our thanks and appreciation. I'm sure they are a great asset to your department. It will be my pleasure to recommend contacts as future business prospects. Here's to the beginning of a long prosperous relationship between us.
Eddie Imbriano
Development Product Liaison
Virtual Studio Systems, Inc.