Escrypt, Renesas jointly develop secure automotive platform

November 24, 2016 // By Christoph Hammerschmidt
Semiconductor supplier Renesas and Escrypt GmbH, a Bochum, Germany based system provider for embedded security, are joining their forces to develop and market an integrated hardware and software platform that will feature high security for automotive electronic systems.

The planned platform solution comprises Renesas' RH850/P1x-C Series of automotive safety microcontrollers (MCUs) with Escrypt’s CycurHSM, a security software stack, to realize highly complex automotive security solutions. The new solution reduces development time and integrates security functions in safety-critical automotive ECU applications. Additionally, the solution serves as a stepping stone to achieve autonomous driving by accelerating the integration of safety and security functions.

In the autonomous driving era, in-vehicle infotainment, vehicle-to-vehicle (V2V), and vehicle-to-infrastructure (V2I) networks are expected to become mainstream. The connectivity between these networks requires robust security measures to ensure the systems are protected from unauthorized external access.

Renesas’ RH850/P1x-C Series integrates a hardware security module with a co-processor supporting data encryption, authentication, and random number generation to address these mission-critical security requirements in vehicle systems. CycurHSM is a security software stack that fits RH850/P1x-C MCUs and complements the security features in hardware with additional security services, such as secure boot, secure flashing, and debugging.

Upcoming novel use cases such as software and firmware updates Over-the-Air (SOTA/FOTA) or advanced driver assistance systems (ADAS) and the resulting in-vehicle communications require higher ECU protection levels against unauthorized or malicious access and manipulation. Therefore, in addition to protection software, hardware security protection within the ECU has also become essential.

The solution is intended to accelerate safety and security functions required for vehicles of the autonomous era with highly optimized HSM technology. The ICU-M provides security services based on private and public key cryptography that allow advanced cyber-security use case implementations. The ICU-M includes dedicated secure code/data flash, enhanced debug control methods by dynamic authentication, fast AES engine with multiple execution contexts and complex ciphering modes, pseudo random number generation seeded by true random number generator compliant with AIS-31 and many other security features.

CycurHSM is a scalable solution, ranging from SHE (Note 4) and SHE+ up to full HSM functionality (such as secure flashing, secure onboard communication, advanced mechanisms for secure