Embedded TLS and Cryptography Library

for Applications, Devices, IoT, and the Cloud

Does your device or application need FIPS based TLS or Cryptography?

Providing secure communication for IoT, smart grid, connected home, automobiles, medical devices, 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:

Booth #4042

San Diego, CA, USA
Apr 22nd to the 25th

MDEX Michigan Defense Expo

Booth #D16

Detroit, MI, USA
Apr 23rd to the 25th


Booth #14

Paris, France
Apr 24th to the 25th

AAAA 2024 Summit - Army Aviation Mission Solutions Summit

Booth #3621

Denver, CO, USA
Apr 24th to the 26th

Live Webinar: An introduction to Stateful Hash-Based Signature Schemes

April 25th | 10am PT
Booth #6471

San Francisco, CA, USA
May 6th to the 9th

SOF Week
Booth #3802

Tampa, FL, USA
May 6th to the 9th

CSfC Conference
Booth #302

University of Maryland, MD, USA
May 7th


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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