The wolfSSL embedded SSL library (formerly CyaSSL) 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 1.2 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.

wolfSSL relies on the FIPS 140-2 validated wolfCrypt library for all cryptographic functionality. Visit http://wolfssl.com/wolfSSL/fips.html for more info!

Features

  • TLS version 1.3
  • TLS version 1.2
  • DTLS
  • Reduced memory footprint
  • Drop in Replacement for OpenSSL
  • cross-platform
  • embedded environments
  • Designed for use in IoT devices
  • Active Development
  • Support
  • Intel® Software Guard Extensions (Intel® SGX)
  • Secure Enclave (SGX)
  • Hardware Crypto
  • Asynchronous Crypto
  • Cavium NITROX®
  • Intel® Quick Assist Technology (Intel® QAT)
  • MAC
  • Windows
  • Linux
  • Unix
  • FreeRTOS
  • Embedded OS

Project Samples

Project Activity

See All Activity >

License

GNU General Public License version 2.0 (GPLv2), Other License

Follow wolfSSL

wolfSSL Web Site

Other Useful Business Software
Gen AI apps are built with MongoDB Atlas Icon
Gen AI apps are built with MongoDB Atlas

Build gen AI apps with an all-in-one modern database: MongoDB Atlas

MongoDB Atlas provides built-in vector search and a flexible document model so developers can build, scale, and run gen AI apps without stitching together multiple databases. From LLM integration to semantic search, Atlas simplifies your AI architecture—and it’s free to get started.
Start Free
Rate This Project
Login To Rate This Project

User Reviews

Be the first to post a review of wolfSSL!