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

SAN JOSE, Calif.--(BUSINESS WIRE)--Sep 14, 2026--

Rambus Inc. (NASDAQ: RMBS ), a premier chip and silicon IP provider making data faster and safer, today announced its CryptoManager™ Root of Trust supporting the Caliptra™ specification, a production-ready Root of Trust and security orchestration solution designed to deliver enterprise-grade security for mission-critical data center and AI SoCs. Interoperable with the open Caliptra framework, the Rambus solution helps semiconductor designers accelerate deployments with added protection, flexibility and support. CryptoManager Root of Trust delivers platform-wide security awareness with proven side-channel and fault-injection protections and best-in-class cryptographic agility for a low-risk path to volume implementations of highly secure data center and AI infrastructure devices.

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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.

CryptoManager Root of Trust Supporting Caliptra Specification

WASHINGTON (AP) — A U.S. government watchdog released its first report Monday on the impact of the Iran war, acknowledging the military's advanced weapons shortfalls and offering the first public look at the damage to American aircraft, bases and diplomatic outposts in the Middle East.

Much of the information has been previously reported over the past six months, but the Pentagon inspector general's report offered the fullest official accounting so far of the conflict's costs in American lives, taxpayer dollars and physical damage. It included information from the watchdogs for the Defense and State departments as well as the U.S. Agency for International Development.

The report, whose publication was first reported by NBC News, noted that the U.S. war with Iran “has resulted in strategic inventory shortfalls and revealed industrial base bottlenecks for munitions resupply” in regard to advanced weapons. Experts have previously said it will take about three years for military contractors to replenish advanced missiles and defensive missile interceptors to prewar levels.

The Pentagon has repeatedly pushed back against reports of any munitions shortage, saying the U.S. military has all the weapons it needs to fight any conflict. President Donald Trump said in a social media post Monday that the U.S. is “producing more Exquisite and Elite Weapons than at any time in our History.”

“They are being delivered on a daily basis to our Forces in the Middle East, and beyond,” he wrote.

The watchdog report, which covers April 1 to June 30, also acknowledged that Iranian strikes damaged and destroyed hundreds of buildings and other structures at U.S. bases in Kuwait, Bahrain, Qatar, the United Arab Emirates, Saudi Arabia, Iraq, Oman and Jordan.

It noted that the U.S. naval base in Bahrain, a Navy logistics hub in the region, was targeted with Iranian drones and ballistic missiles. U.S. Central Command had to shift to supply lines to alternate hubs that were much farther away, including Diego Garcia, a U.S.-U.K. base on an island in the Indian Ocean. It required “14- to 18-day logistics cycles" to support operations in the Middle East, the report said.

Acting Navy Secretary Hung Cao acknowledged in an interview with The Epoch Times last week that “they blew the hell out of Bahrain” and said he has a task force looking into whether the Navy would need to repair the base in Bahrain to sustain its forces in the region.

Dozens of American aircraft and drones also were destroyed or damaged by Iran, including the destruction of as many as 30 MQ-9 Reaper drones that cost around $30 million apiece, the report said. Seven KC-135 refueling aircraft were damaged or destroyed, including five that were struck by Iranian munitions while on the ground in Saudi Arabia.

Another KC-135 crashed in Iraq, killing six service members, following a collision with another KC-135. Those deaths, and the death of a pilot of a helicopter that crashed into the Arabian Sea, are listed as occurring during non-hostile events. Eleven other service members are listed as “killed in action” in Kuwait, Iraq, Jordan and Saudi Arabia.

Defense Secretary Pete Hegseth told Congress in late July that the war had cost $37.5 billion so far.

The costs in physical damage to U.S. diplomatic facilities, however, had not been previously publicly released. Such outposts in Iraq, Kuwait, Saudi Arabia and the UAE were damaged by Iranian strikes, with an estimated cost of $184 million, according to the report.

The State Department reported in early June that its other costs from the conflict came to $113 million, with nearly $80 million used to respond to contingency plans, including evacuation expenses for U.S. personnel and their families as well as other American citizens and eligible third-country nationals.

The State Department reported that in the weeks and months after the U.S. and Israel first struck Iran on Feb. 28, the Trump administration evacuated about 9,000 U.S. citizens from countries in the Middle East and Europe. Through private and commercial flights as well as land and water travel, the cost of the department’s evacuation operation was more than $11 million as of late June.

“State determined that consular officers would not be able to fully document travel itineraries required to seek reimbursement from evacuees and therefore it would be impracticable to seek reimbursement from them,” the report states.

The majority of the evacuations were made from Israel, with Iraq and Jordan following shortly behind. While the U.S. only evacuated 1,200 Americans from the United Arab Emirates, those trips to Istanbul, Athens and Washington cost the most, at more than $4 million.

The State Department reported that more than $44 billion in emergency and non-emergency military sales also were made in that span of time, with the majority of sales going to Saudi Arabia. Sales included military helicopters, munitions and munitions support as well as advanced precision weapons system.

Other regional countries, including Qatar, Kuwait, UAE and Israel, also received billions in sales, as Iran retaliated against nearly every country in the region that hosted a U.S. military base.

Amiri reported from New York.

FILE - U.S. embassy personnel inspect the damage caused by a bombing in Baghdad, March 14, 2026. (AP Photo/Hadi Mizban, File)