Skip to content


This manual is written as a technical guide to the wolfSSL embedded SSL/TLS library. It will explain how to build and get started with wolfSSL, provide an overview of build options, features, portability enhancements, support, and much more.

You can find the PDF version of this document here.

Why Choose wolfSSL?

There are many reasons to choose wolfSSL as your embedded SSL solution. Some of the top reasons include size (typical footprint sizes range from 20-100 kB), support for the newest standards (SSL 3.0, TLS 1.0, TLS 1.1, TLS 1.2, TLS 1.3, DTLS 1.0, and DTLS 1.2), current and progressive cipher support (including stream ciphers), multi- platform, royalty free, and an OpenSSL compatibility API to ease porting into existing applications which have previously used the OpenSSL package. For a complete feature list, see Features Overview.