Rambus Enhances Enterprise-Grade Security for Data Center and AI SoCs with CryptoManager™ Root of Trust Supporting the Caliptra™ Specification

Rambus launches a Caliptra-compatible Root of Trust platform to help chip designers deploy enterprise-grade security in data center and AI SoCs.

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CryptoManager Root of Trust for use with Caliptra specification provides a production-ready Root of Trust and security orchestration solution that accelerates deployments and enables advanced security for mission-critical data center and AI infrastructure devices

• Provides Root of Trust and security orchestration interoperable with the open-source Caliptra framework
• Accelerates customer deployments with a complete hardware and software integration framework, including dedicated drivers, APIs, and system-level security applications
• Delivers best-in-class side-channel protection, cryptographic agility, integration flexibility, and support for data center and AI SoC designs

CryptoManager Root of Trust Supporting Caliptra Specification

Caliptra is an open-source silicon Root of Trust designed for integration into data center-class SoCs. Initiated through the Open Compute Project and now developed within the CHIPS Alliance, it combines hardware, firmware and specifications to provide a common foundation for device identity, measured boot and attestation across CPUs, GPUs, AI accelerators, DPUs, networking devices and other infrastructure components. Its transparent, collaborative model supports greater consistency across devices from different suppliers.

Production-Ready Security for Customer Caliptra Deployments

With the CryptoManager Root of Trust supporting the Caliptra specification, designers can build on the open-source foundation to implement a complete production security subsystem. This addresses integration into the wider platform, provides the software and security orchestration needed for deployment, adds protection against advanced attacks, supports evolving cryptographic requirements, enables additional security certifications and maintains the solution throughout the device lifecycle.

“As the Caliptra ecosystem gains momentum, organizations need a practical path to deploy scalable and supportable security solutions in demanding production environments,” said Simon Blake-Wilson, SVP and general manager of Silicon IP at Rambus. “CryptoManager Root of Trust supporting the Caliptra specification provides the hardware, software, advanced protections and commercial support needed to accelerate deployment of differentiated, enterprise-grade security that is interoperable with the Caliptra framework.”

The CryptoManager Root of Trust supporting the Caliptra specification provides dedicated hardware-level security in an SoC, combining a secure RISC-V processor, protected memory, secure key and data storage, cryptographic accelerators, and secure interfaces. Operating alongside an unmodified open-source Caliptra Project core, it mediates interactions between the Caliptra Project core, the host processor and other SoC components so that security-sensitive operations can remain within a protected boundary while trust is extended across the wider platform.

Through specialized drivers and security applications, CryptoManager Root of Trust provides platform-level awareness enabling security monitoring, policy enforcement, secure lifecycle management, and coordinated protection of critical system resources. The CryptoManager architecture supports classical, post-quantum, and regional cryptographic algorithms, along with advanced protections against side-channel and fault injection attacks, and certification support for security standards such as FIPS 140-3 and SESIP.

By combining enterprise-grade security with simplified integration and certification readiness, the CryptoManager Root of Trust delivers a production-ready security platform for next-generation data center and AI semiconductor devices.

More Information

Learn more about the Rambus CryptoManager Root of Trust supporting the Caliptra specification here.

About Rambus Inc.

Rambus delivers industry-leading chips and silicon IP for the data center and AI infrastructure. With over three decades of advanced semiconductor experience, our products and technologies address the critical bottlenecks between memory and processing to accelerate data-intensive workloads. By enabling greater bandwidth, efficiency and security across next generation computing platforms, we make data faster and safer. For more information, visit rambus.com.

Source: Rambus Inc.

Forward-Looking Statements

Information set forth in this press release, including statements as to Rambus’ outlook and financial estimates and statements as to the expected timing and effects of Rambus products, constitute forward-looking statements within the meaning of the safe harbor provisions of the Private Securities Litigation Reform Act of 1995.

These statements are based on various assumptions and the current expectations of the management of Rambus and may not be accurate because of risks and uncertainties surrounding these assumptions and expectations. Factors listed below, as well as other factors, may cause actual results to differ significantly from these forward-looking statements. There is no guarantee that any of the events anticipated by these forward-looking statements will occur, or what effect they will have on the operations or financial condition of Rambus. Forward-looking statements included herein are made as of the date hereof, and Rambus undertakes no obligation to publicly update or revise any forward-looking statement unless required to do so by federal securities laws.

Major risks, uncertainties and assumptions include, but are not limited to: any statements regarding anticipated operational and financial results; any statements of expectation or belief; other factors described under “Risk Factors” in Rambus’ Annual Report on Form 10-K and Quarterly Reports on Form 10-Q; and any statements of assumptions underlying any of the foregoing. It is not possible to predict or identify all such factors. Consequently, while the list of factors presented here is considered representative, no such list should be considered to be a complete statement of all potential risks and uncertainties.

Caliptra™ is a trademark of The Linux Foundation and is managed under the CHIPS Alliance project. All rights reserved. Any use of the Caliptra name or logo in this document is purely for descriptive, educational, or reference purposes and does not imply endorsement, sponsorship, or affiliation with The Linux Foundation or CHIPS Alliance.

View source version on businesswire.com: https://www.businesswire.com/news/home/20260914528439/en/

Press Contact
Cori Pasinetti  
Rambus Corporate Communications  
t: (650) 309-6226  
cpasinetti@rambus.com

Source: Rambus Inc.

Key Terms

root of trust technical

A root of trust is a small, tamper-resistant component inside a device or system that serves as the secure anchor for identity and data protection—think of it as a locked safe that holds the master keys and proof that the system is genuine. It matters to investors because a strong root of trust reduces the risk of hacks, supports regulatory compliance and customer confidence, and therefore can protect a product’s value and a company’s reputation.

risc-v technical

A royalty-free, open instruction set architecture (ISA) that acts like a blueprint for how a computer’s brain understands and executes commands. Because it is not owned by a single company and can be freely implemented and customized, RISC‑V can lower licensing costs, speed product development, and encourage competition and supply-chain diversification—factors investors watch because they affect margins, market share, and the pace of innovation in chips and devices.

side-channel technical

A side-channel is an indirect way information or value leaks out of a system through unintended paths—like noise, timing, power use, or physical signals—rather than through its main, designed channels. For investors, side-channel risks matter because they can expose confidential data, enable fraud, disrupt products, or trigger regulatory penalties and costly fixes; think of it as a hidden crack that can let trouble sneak into an otherwise secure building.

fault injection technical

Fault injection is a testing technique that deliberately introduces errors or failures into hardware, software or control systems to see how they behave under stress. For investors, it reveals how well a company can prevent outages, safety incidents or cyberattacks, much like intentionally tripping a circuit breaker to confirm backup power works; stronger resilience reduces the risk of costly downtime, regulatory penalties and damage to reputation.

fips 140-3 regulatory

A U.S. government standard that sets detailed security requirements for cryptographic modules—software or hardware components that encrypt data and manage keys. Think of it as a rigorous safety inspection for digital locks: passing the test signals that a product meets recognized security practices, which matters to investors because certification can affect a company’s ability to sell to governments and regulated industries, reduce legal and operational risk, and support customer trust.