Thursday, June 20, 2024

IoT Security Solutions Based On Embedded TLS Stack

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32-bit RA family, RX family and Synergy Platform MCU customers can obtain free wolfSSL license for TLS stack

Renesas Electronics Corporation and wolfSSL have jointly announced a multi-year licensing agreement whereby customers of Renesas’ 32-bit MCU offerings can obtain a free commercial license for the wolfSSL TLS (Transport Layer Security) stack with integrated Renesas hardware security engine support plus the FIPS-certified wolfCrypt crypto library. All customers of Renesas RA Family, RX Family and Synergy Platform MCUs are eligible for the commercial license, which includes technical support from wolfSSL.

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TLS is the worldwide standard for securing internet communications. A TLS solution built on certified, integrated hardware security engines such as the Renesas TSIP (Trusted Secure IP) and SCE (Secure Crypto Engine) provides the ultimate mechanism to create secure IoT products. The wolfSSL embedded TLS stack is a lightweight TLS solution written in ANSI C and targeted for embedded, RTOS and resource-constrained environments – primarily because of its small size, speed and feature set. wolfSSL supports industry standards up to the current TLS 1.3 and DTLS 1.2 levels and is up to 20 times smaller than OpenSSL. In addition to full integration with the Renesas MCU’s hardware security engines, wolfSSL includes the wolfCrypt lightweight crypto library, which has been certified to FIPS 140-2 Level 1. wolfCrypt supports the most popular algorithms and ciphers as well as progressive ones such as post-quantum key exchange available through the Open Quantum Safe project’s liboqs.

Security is a key differentiator for MCU customers, particularly in the fast-growing IoT market, and Renesas has established leadership in security with a wide range of solutions and certifications. Earlier this year, Renesas announced FIPS 140-2 Level 3 certification of the RX65N, the first such certification for a general-purpose MCU. RA Family Arm Cortex-M MCUs have achieved both PSA Certified Level 2 and Security Evaluation Standard for IoT Platforms (SESIP) certifications, with additional NIST certifications planned. Renesas offers MCU devices with protections against timing and SPA/DPA side-channel attacks on crypto operations. All Families offer devices with unlimited secure key storage, with the RA Family offering simplified secure key installation.

Renesas 32-bit MCU customers can download the WolfSSL TLS stack, including the wolfCrypt Cryptography library today at


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