Infineon: TPM for cybersecurity in the connected car

Infineon Technologies is enabling a crucial step toward greater cybersecurity in the connected car by putting a Trusted Platform Module (TPM) specifically for automotive applications on the market. The new OPTIGA TPM 2.0 protects communication between the car manufacturer and the car which increasingly turns into a computer on wheels. The TPM is a hardware-based security solution that has proven its worth in IT security. By using it, car manufacturers can incorporate sensitive security keys for assigning access rights, authentication and data encryption in the car in a protected way. The TPM can also be updated so that the level of security can be kept up to date throughout the vehicle’s service life.

Mobility of the future requires the exchange of huge volumes of data. Cars send real-time traffic information to the cloud or receive updates from the manufacturer “over the air”, for example to update software quickly and in a cost effective manner. The senders and recipients of that data, whether car makers or individual components in the car, require cryptographic security keys to authenticate themselves. These critical keys are particularly protected against logical and physical attacks in the OPTIGA TPM as if they were in a safe.

Furthermore, incorporating the first or initial key into the vehicle is a particularly sensitive moment for car makers. When the TPM is used, this step can be carried out in Infineon’s certified production environment. After that, the keys are protected against unauthorized access; there is no need for further special security precautions throughout the various stages of the – often globally distributed – value chain. The TPM likewise generates, stores and administers further security keys for communication within the vehicle. And it is also used to detect faulty or manipulated software and components in the vehicle and initiate troubleshooting by the manufacturer in such a case.

The new OPTIGA TPM 2.0 SLI 9670 from Infineon is a plug & play solution for automotive applications. It is especially suited for use in a central gateway, the telematics unit or the infotainment system of the vehicle. The SLI 9670 consists of an attack-resistant security chip and high-performance firmware developed in accordance with the latest security standard. The firmware enables immediate use of security features, such as encryption, decryption, signing and verification. The TPM can be integrated quickly and easily in the system thanks to the open source software stack (TSS stack) for the host processor, which is also provided by Infineon. It has an SPI interface, an extended temperature range and the advanced encryption algorithms RSA-2048, ECC-256 and SHA-256.

The new TPM complies with the internationally acknowledged Trusted Computing Group TPM 2.0 standard, is certified for security according to Common Criteria and is qualified in accordance with the automotive standard AEC-Q100. It is available now available and manufactured in security-certified production facilities of Infineon Germany and the Philippines.

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