Product Licensing

wolfSSL’s software is available under two distinct licensing models: open source and standard commercial licensing. Please see the relevant section below for information on each type of license.

Open Source

CyaSSL, yaSSL, wolfCrypt, yaSSH and TaoCrypt software are free software downloads and may be modified to the needs of the user as long as the user adheres to version two of the GPL License. The GPLv2 license can be found on the website (

Commercial Licensing

Businesses and enterprises who wish to incorporate wolfSSL products into proprietary appliances or other commercial software products for re-distribution must license commercial versions. Commercial licenses for CyaSSL, yaSSL, and wolfCrypt are available for $5,000 USD per end product or SKU. Licenses are generally issued for one product and include unlimited royalty-free distribution. Custom licensing terms are also available.

FIPS Validation

The wolfCrypt software library is under testing at the leading Cryptographic Security Testing (CST) Laboratory. A FIPS 140-2 Level 1 certificate is expected to be issued in 1Q2015. For additional information, visit our FIPS FAQ page or contact

Support Packages

Support packages for wolfSSL products are available on an annual basis directly from wolfSSL.  With three different package options, you can compare them side-by-side and choose the package that best fits your specific needs.  Please see our Support Packages page for more details.

Need Clarification or Help?

We understand that licensing issues can be thorny and confusing. If you have licensing questions on our products, please contact us at or call us directly at +1 425 245 8247.  We'll be happy to help you work through it.


Copyright 2015 wolfSSL Inc.  All rights reserved.


Please feel free to contact us with any questions you might have.

yaSSL 2.3.7

This release of yaSSL fixes the potential to process duplicate handshake messages by explicitly marking/checking received handshake messages.

wolfSSL 3.4.0

Release 3.4.0 changes CyaSSL to wolfSSL, adds Curve25519, includes updates to AIX, PIC32MZ, TI-RTOS, PowerPC, Xcode, memory optimizations, warnings, and more.

embedded ssl

Questions? +1 (425) 245-8247