As more and more cars have networking and autopilot capabilities, embedded information security for automotive communications becomes even more important. Infineon Technologies AG and ESCRYPT Ltd. ("ESCRYPT") are working closely together in the field of automotive network security to introduce a solution designed to encrypt in-vehicle communications and enhance communications security while meeting future security needs. The solution is based on Infineon's second-generation AURIXTM (TC3xx) multi-core microcontroller family and ESCRYPT's tailor-made CycurHSM security software.
This hardware-software integration solution increases the difficulty of manipulating electronic control units (ECUs). Hyundai vehicles typically carry about 60 ECUs that communicate with each other, and this solution will help improve the information security of applications such as software over-the-air (SOTA) and autonomous driving.
This software-based and hardware-based solution, AURIX and CycurHSM, significantly improves security compared to pure software-based solutions. Hardware Security Modules (HSMs) are embedded in every TC3xx microcontroller today. By physically packaging the security functions in the HSM, the ECU's main controller can focus on performing its own tasks.
ECU manufacturers can also benefit from other aspects: because this hardware-software solution is very easy to implement. It meets AUTOSAR requirements and eliminates the need to develop additional security features—supporting the configuration of CycurHSM software. This total solution can reduce development costs for up to 90% of automotive communication information security. Thanks to this, system vendor developers can focus on developing advanced software for new applications.
The AURIX microcontroller family is a key component of automotive embedded security solutions. They control communication processes, perform monitoring and security tasks, and also support security protocols. Among them, the key is generated and saved by the HSM, thus achieving secure boot, flashing and debugging. With symmetric encryption and asymmetric encryption (AES-128, ECC 256, SHA2), HSM improves tamper protection such as automotive software, internal or external data transfer, and avoids installing malware and updating unauthorized software. .
As the world's first provider of embedded security software systems, ESCRYPT has tailored a software stack for CycurHSM for AURIX and HSM. It implements a range of hardware-based security features such as data encryption and authentication, true random number generator (TRNG) applications, and secure flash. Not only that, but the solution also has a range of security features, such as operational monitoring, which monitors application certification at runtime.
Thomas Boehm, senior director of Infineon chassis and ADAS application microcontrollers, said: "AURIX has increased the complexity of trying to manipulate ECUs, so it is a key component of the car, now and in the future. AURIX and the coordination software stack CycurHSM The combination will further improve the safety of in-vehicle information and reduce the related development tasks of system suppliers."
Frederic Stumpf, Head of Product Management at ESCRYPT, believes that ensuring information security is a prerequisite for networked autonomous driving: "The combination of high-end hardware platform AURIX and advanced HSM software brings an advanced model for the automotive industry. Future cooperation with Infineon Prove that cooperation can achieve the best results in car information security."
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