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Security

Root of Trust RT-640

The Rambus Root of Trust RT-640 (formerly the CryptoManager 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 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, AXI Multi Issue Out-of-Order, and Fast DMA capability. Additional algorithms such as Whirlpool (SHE), SHA-1 (legacy), AES-CMAC, SHA-3, Poly1305 & ChaCha and OSCCA SM2-3-4 are available as optional HW crypto accelerators.

Additionally, the RT-640 is certified by TÜV-SGS as ISO26262 ASIL-B ready satisfying the ASIL-B Single Point Fault Metric (SPFM ≥ 90 % of faults detected) and Latent Fault Metric (LFM ≥ 60 % of faults detected). 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.

Satisfying use cases such as secure boot, EVITA HSM, and protection of propriety algorithms, the ISO-26262 ASIL-B ready RT-640 is ideally suited for automotive applications where security is imperative. If higher SPFM and LFM rates are required, the RT-645 ASIL-D ready configuration is available.

Security in the ARM Ecosystem cover

Security in the ARM Ecosystem

Building security in an SoC aiming to meet the goals set by the ARM Platform Security Architecture (PSA) is a complex matter. This is compounded by the complexity of modern-day SoCs comprising multiple processors, security domains and security levels. The Rambus root of trust provides a solid foundation for the SoC security architecture ticking ‘all the boxes’ for reaching the security goals, while offering extensive support for effective integration into a complex TrustZone-based SoC infrastructure.

How the Root of Trust Works

The Rambus Root of Trust RT-640 is an independent hardware security co-processor design for integration into semiconductor devices, offering secure execution of user applications, tamper detection and protection, and secure storage and handling of keys and security assets. The Root of Trust offers chipmakers a siloed approach to security; while located on the same silicon as the main processor, the secure processing core is physically separated. A layered security approach enforces access to crypto modules, memory ranges, I/O pins, and other resources, and assures critical keys are available through hardware only with no access by software. While based on a custom processor, the Rambus Root of Trust supports all common main processor architectures, including ARM, RISC-V, x86 and others.

Root of Trust diagram

The Root of Trust supports multi-tenant deployments by offering true multiple root of trust capabilities. Each individual Secure Application can be assigned its own unique keys, meaning permissions and access levels are set completely independent of others. Secure Applications are siloed from each other, ensuring the best approach to security. OEMs can determine access levels and permissions for each and all processes operating within the secure processor.

Secure Applications

Included with the RT-640 Hardware Root of Trust are a series of standard secure applications (“containers”) to speed development, including secure boot, identity management, HSM reference, and others. Dedicated EVITA-Full and EVITA-Medium Secure Applications can be offered on request. A container development kit (CSDK) is also included to allow the development of custom containers for specific use cases.

The Road to Post Quantum Cryptography cover

The Road to Post Quantum Cryptography

Quantum computing offers the promise of tremendous leaps in processing power over current digital computers. But for the public-key cryptography algorithms used today for e-commerce, mobile payments, media streaming, digital signatures and more, quantum computing represents an existential event. Quantum computers may be able to break the widely used RSA and ECC (Elliptic-Curve Cryptography) algorithms in as little as days. Learn about our solutions and recommendations to ready customers for a post-quantum world.

Solution Offerings

Full Disk Encryption of Solid State Drives and Root of Trust Cover

Full Disk Encryption of Solid State Drives and Root of Trust

File encryption, file system encryption and full disk encryption (FDE) are methods offered by the industry to allow users to protect their data stored on non-volatile storage devices, such as Solid State Disks (SSD). The main feature of FDE is to protect stored system and user date from unauthorized reading, writing, alteration, moving or rolling back. However, extended security features are key to securing FDE implementation.