RT-64x Embedded HSM Family (Root of Trust)

The Rambus RT-64x Embedded Hardware Security Module (Root of Trust) family are fully programmable, ISO 26262 ASIL-B hardware security cores offering security by design for automotive applications. They protect 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 an embedded hardware security module-based security implementation. The Rambus RT-640 is the ideal security co-processor for automotive uses. Built on a custom 32-bit RISC-V siloed and layered secure co-processor, along with dedicated secure memories, the RT-640 features a number of high-capability cryptographic accelerators like AES (all modes), HMAC-SHA-2 (all modes), RSA up to 4096 bits, ECC up to 521 bits, a NIST-compliant Random Bit Generator, and Fast DMA capability.

The RT-640 is certified by TÜV-SGS as ISO-26262 ASIL-B satisfying the ASIL-B Single Point Fault Metric (SPFM ≥ 90 % of faults detected) and Latent Fault Metric (LFM ≥ 60 % of faults detected). The development process for Rambus Root of Trust products is also certified to ISO-26262. To support customers, the RT-640 package comes with the proper ASIL documentation, such as the ASIL-B Failure Modes Effects and Diagnostic Analysis (FMEDA and Safety manuals).

The RT-641 is ASIL-B compliant and builds on the RT-640 with Chinese cipher algorithms SM2, SM3 and SM4, offering security by design for automotive applications that require Chinese crypto-based security support.

If higher SPFM and LFM rates are required, the RT-7xx ASIL-D configuration satisfies the ASIL-D Single Point Fault Metric (SPFM ≥ 99 % of faults detected) and Latent Fault Metric (LFM ≥ 90 % of faults detected). To support customers, the RT-7xx package comes with the proper ASIL documentation, such as the ASIL-D Failure Modes Effects and Diagnostic Analysis (FMEDA), Dependent Failure Analysis (DFA) and Safety manuals.

Satisfying use cases such as secure boot, EVITA and SHE+ HSM and AutoSAR functionality, as well as protection of propriety algorithms, the Rambus RT-64x Root of Trust family is ideally suited for automotive applications where security is imperative.