With every release of the wolfSSL embedded SSL/TLS library, there are multiple feature additions, port additions, and updates. One of the ports that was added to the wolfSSL library recently was a port to Contiki! You can checkout the changes for Contiki in PR #2500 against the contiki-os/contiki github repository!
Contiki is an open source operating system for the Internet of Things. It connects tiny low-cost, low-power microcontrollers to the Internet. Contiki is a perfect match for wolfSSL, which was built for use on embedded and resource-constrained devices with portability in mind. In addition to being highly portable, wolfSSL provides support for the latest and greatest version of the TLS protocol, TLS 1.3! Using the wolfSSL port with your device running Contiki will allow your IoT device to connect to the internet in one of the most secure ways possible.
The Contiki port in wolfSSL is activated by using the "WOLFSSL_CONTIKI" macro when compiling wolfSSL. An example of this on embedded devices would be placing WOLFSSL_CONTIKI into a user_setttings.h file, or by including the option CPPFLAGS="-DWOLFSSL_CONTIKI" if compiling wolfSSL by using autotools.
For more information, please contact firstname.lastname@example.org.
The most recent version of wolfSSL can be downloaded from our download page, here: https://www.wolfssl.com/download/
wolfSSL support for TLS 1.3: https://www.wolfssl.com/docs/tls13/
Contiki OS homepage: http://www.contiki-os.org