RT-640 Programmable Root-of-Trust Security Processor for Automotive ASIL-B-ready Rambus Hardware Root of Trust RT-640 is a fully programmable, ISO-26262 ASIL-B ready hardware security core offering security by design for automotive applications. It protects against a wide range of failures such as permanent, transient and latent faults and hardware and software attacks with state-of-the-art anti-tamper and security techniques. As the connected nature of automobiles evolves, device architects face a growing array of emerging security threats. Whether V2X, ADAS, infotainment, or other application, one constant in automotive design is the need for a hardware root of trust-based security implementation. The Rambus RT-640 is the ideal security co-processor for ISO-26262 ASIL-B applications.