wolfSSL 5.6.3 adds support for Renesas TSIP v1.17 and extends some of the TLS handshake operations to use this cryptographic accelerator. TSIP v1.17 adds the ability to handle CertificateVerify messages over TLS. This feature is used for both validation and generation of messages exchanged with the server. Of course, both TLS1.2 and 1.3 can handle both ECC and RSA certificates.
Example applications for Renesas RX series MCUs with Renesas IDE e2studio project files are provided in the wolfSSL package, included in the /IDE/Renesas/e2studio/RXxx folders. Detailed instruction manuals written both in English and Japanese will help you get started with wolfSSL on these platforms quickly.