Embedded TLS and Cryptography Library

wolfSSL’s Cybersecurity products are currently in service in the sky protecting space based assets from compromise.

Does your device or application need FIPS or DO-178 based TLS or Cryptography?

wolfBoot, our secure bootloader, secures satellites by ensuring that any firmware update is signed and verified by our wolfCrypt FIPS 140-3 cryptography library. We also support TLS 1.3 or SSH for secure delivery of the updated firmware, should you be concerned about the security of your network connection and potentially subject to man in the middle attacks. wolfSSL can run ‘over the top’ of the various satellite communications standards.

wolfTPM is a portable open-source TPM 2.0 stack tailored for embedded systems applications. Notably versatile, it runs seamlessly on RTOS, bare metal, and resource constrained environments. It can support FPGA based fTPM’s as well as all popular hardware TPM’s.

Howling Wolf

Does Your Application or Device Need TLS?

The wolfSSL embedded TLS library is a lightweight, portable, C-language-based TLS library targeted at IoT, embedded, and RTOS environments primarily because of its size, speed, and feature set. It works seamlessly in desktop, enterprise, and cloud environments as well. wolfSSL supports industry standards up to the current TLS 1.3 and DTLS 1.2, is up to 20 times smaller than OpenSSL, offers a simple API, an OpenSSL compatibility layer, OCSP and CRL support, is backed by the robust wolfCrypt cryptography library, and much more.

The CMVP has issued FIPS 140-2 Certificates #3389 for the wolfCrypt Module developed by wolfSSL Inc.  wolfSSL is on track to be one of the first crypto modules to be FIPS 140-3 validated. For more information, see our FIPS FAQ.


Talk to us at these upcoming events:


Black Hat Europe

London, UK
Dec 4th to the 7th

AMD-Xilinx Security Working Group

Munich, Germany
Dec 5th to the 6th

Embedded Software Engineering Kongress

Sindelfingen, Germany
Dec 5th to the 7th

ST Technology Tour

Santa Clara, CA, US
Dec 7th

DoDIIS Worldwide Conference

Portland, OR, US
Dec 12th to the 14th


Brussels, Belgium
Feb 2nd to the 4th

SmallSat Symposium

Mountain View, CA, US
Feb 6th to the 8th


Everything You Need to Know about FIPS 140-3

Embedded Security for Avionics


wolfSSL focuses on creating high quality, portable, embedded security software.  Current products include the wolfSSL embedded TLS library, wolfCrypt embedded crypto engine, wolfMQTT, wolfSSH, and wolfSSL JNI wrapper. As strong believers in open source, the majority of wolfSSL’s products are dual licensed under both the GPLv2 as well as standard commercial licensing.

wolfSSL now has support for TLS 1.3 Try it out today by downloading wolfSSL today!

To learn more about wolfSSL and the wolfSSL embedded TLS library, we invite you to read our About Us page, or visit a respective Product Page.


Are you curious about where wolfSSL products are used? wolfSSL is actively being used in a wide range of markets and products including the smart grid, IoT, industrial automation, connected home, M2M, auto industry, games, applications, databases, sensors, VoIP, routers, appliances, cloud services, and more.

Over 2 Billion applications and devices are secured with wolfSSL products.

To learn more about specific markets which are currently using wolfSSL products, please visit our Case Studies page.

Securing the connected world with wolfSSL seamless TPM 2.0 integration


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