WolfSSL

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wolfSSL

Developer(s)	Todd Ouska
Initial release	February 19, 2006 (2006-02-19)[1]
Stable release	5.7.4[2]  / 24 October 2024
Repository	github.com/wolfssl/wolfssl
Written in	C
Operating system	Multi-platform
Type	Cryptography library
License	GPL-2.0-or-later or proprietary[3]
Website	www.wolfssl.com

wolfSSL is a small, portable, embedded SSL/TLS library targeted for use by embedded systems developers. It is an open source implementation of TLS (SSL 3.0, TLS 1.0, 1.1, 1.2, 1.3, and DTLS 1.0, 1.2, and 1.3) written in the C programming language. It includes SSL/TLS client libraries and an SSL/TLS server implementation as well as support for multiple APIs, including those defined by SSL and TLS. wolfSSL also includes an OpenSSL compatibility interface with the most commonly used OpenSSL functions.^[4][5]

A predecessor of wolfSSL, yaSSL is a C++ based SSL library for embedded environments and real time operating systems with constrained resources.