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RT-660 Programmable Root of Trust

With DPA and FIA

The Rambus RT-660 Root of Trust (formerly the CryptoManager RT-660) is a fully programmable, FIPS 140-2 and FIPS 140-3 compliant hardware security anti-tamper core offering security by design for government and military mission-critical applications. The RT-660 protects against a wide range of hardware and software attacks with state-of-the-art anti-tamper security techniques. Government and military hardware require the highest security protections due to sensitive information being stored and processed. The RT-660 is a military grade security co-processor, built on a custom-designed 32-bit RISC-V architecture, along with dedicated secure memories. The RT-660 offers superior anti-tamper attack protection through the implementation of Differential Power Analysis (DPA) countermeasures and state-of-the-art fault injection attack (FIA) protections. The RT-660 implements DPA and FIA protected AES, RSA, and ECC cryptographic accelerator cores. The RT-660 provides hardware implementations of a NIST SP800-90a/b/c compliant TRNG (true random number generator), Public Key Engine (RSA up to 8192 bits and ECC up to 521 bits), AES (all modes), HMAC and SHA-2/-3 crypto accelerators. The RT-660 core is both FIPS 140-2 and FIPS 140-3 CAVP/CMVP compliant. It is the ideal choice for chip and system architects designing FPGA and ASIC solutions for applications requiring the highest level of security.
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

While built upon a RISC-V architecture, the RT-660 RISC-V CPU is a custom implementation designed specifically for security use cases. Rambus employed over 20 years of device security experience to build a security co-processor providing the highest levels of siloed and layered security. The RT-660 is designed for integration into military and government ASICs and FPGAs, offering secure execution of authenticated user applications, tamper detection and protection, and secure storage and handling of keys and security assets.

Root of Trust diagram

The Root of Trust offers 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. The Rambus Root of Trust RT-660 supports all commonly deployed host SoC processor architectures, including ARM, RISC-V, x86 and others.

The Rambus 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.

Dedicated FPGA Configuration

The RT-660 is available in an FPGA configuration for synthesis in programmable logic. This configuration is designed to map optimally (for maximum utilization and frequency) into an FPGA fabric and connect either to on-board or external CPUs. In addition, the RT-660 is expanded with an additional OTP emulation model to overcome the lack of (or limitation of) true nonvolatile one-time programmable memory in certain FPGA families. This module allows storing secure assets in external flash in a secure way.

Secure Applications

Included with the RT-660 Hardware Root of Trust are a series of standard secure applications (“containers”) to speed development, including secure boot, identity management, HSM reference, and others. A container development kit (CSDK) is also included to allow the development of custom containers for specific use cases.

Deep Anti-Tamper Experience

As the inventor and pioneer of DPA and an acknowledged leader in device security, Rambus is uniquely qualified to provide anti-tamper solutions for the most stringent requirements. Rambus technologies protect more than 9 billion chips per year, and as a US-based, independent company, Rambus has the experience and pedigree to be the solution provider of choice. Rambus has for more than 20 years supplied solutions for government and defense applications, including anti-tamper cores, software libraries, and testing workstations.

Introduction to Side-Channel Attacks eBook

Introduction to Side-Channel Attacks

Side-channel attacks, including simple power analysis and differential power analysis, conducted against electronic gear are relatively simple and inexpensive to execute. An attacker does not need to know specific implementation details of the cryptographic device to perform these attacks and extract keys. As all physical electronic systems routinely leak information, effective side-channel countermeasures should be implemented at the design stage to ensure protection of sensitive keys and data.

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