Embedded TLS and Cryptography Library

for Applications, Devices, IoT, and the Cloud

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

Used by every branch of US arms services – used in everything from tanks and missile systems to satellites and aircraft.

Providing secure communication for IoT, smart grid, connected home, automobiles, routers, applications, games, IP, mobile phones, the cloud, and more.

Howling Wolf

Does Your Application or Device Need SSL/TLS?

The wolfSSL embedded TLS library is a lightweight, portable, C-language-based SSL/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 and #2425 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!

Automotive Engineering Exposition 2024 YOKOHAMA

Yokohama, Japan
May 22nd to the 24th

Live Webinar: wolfHSM Design for Automotive Hardware Security Modules

May 30th | 10am PT
AFCEA Army Data Summit
Tabletop #507

Fort Liberty, NC, USA
May 29th to the 31st
Auto Tech Detroit
Booth #730

Novi, MI, USA
June 5th to the 6th

Japan Drone | International Advanced Air Mobility Expo 2024

Makuhari Messe, Chiba, Japan
June 5th to the 7th
ILA Berlin
Hall: ILA 4, booth 375

Berlin, Germany
June 5th to the 9th

Booth #14

Glendale, AZ, USA
June 11th to the 13th

NXP Tech Days

Chicago, IL, USA
June 13th

Everything you Need to learn about FIPS 140-3

Embedded Security in 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 SSL/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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