Rambus Launched Caliptra-Compatible Security Solution
The new CryptoManager Root of Trust provides advanced security features for open-source hardware designs.
Updated on Oct. 7, 2026 in Semiconductors
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Rambus has introduced a CryptoManager Root of Trust solution designed to support the open-source Caliptra specification for systems-on-chip. The hardware-based subsystem is built to streamline the development of secure, commercial-grade semiconductors.
Why it matters
By providing a pre-integrated security subsystem, Rambus aims to reduce the engineering complexity required to move Caliptra-based chip designs into commercial production. The solution helps developers meet rigorous industry security standards more efficiently.
The subsystem integrates a RISC-V processor with dedicated secure storage, protected memory, and hardware countermeasures against side-channel and fault-injection attacks. It supports FIPS 140-3, PSA, and SESIP certification compliance.
The players
Rambus
Rambus is a technology company that specializes in providing silicon IP and high-speed memory architectures for the semiconductor industry.
Caliptra
Caliptra is an open-source hardware specification designed to establish a consistent root of trust architecture for semiconductors.
The details
The CryptoManager Root of Trust operates alongside an unmodified Caliptra core to handle critical security operations within a chip. Developers can integrate the system into their architecture using provided drivers, APIs, and verification resources.
Timeline
October 6, 2026: Rambus officially announced the Caliptra-compatible security solution.
The Tech Race
As silicon designs move toward standardized open-source security models, vendors are competing to provide the most robust and compliant subsystems that accelerate time-to-market. This shift replaces the previous reliance on entirely bespoke, closed-source security architectures.
For chip developers and hardware engineers, this solution provides a ready-to-use path to achieving high-level security certifications for their products. The integration of established APIs and verification tools can significantly reduce the development time required for secure consumer electronics.
The takeaway
Security is increasingly moving to the hardware level through standardized open-source specifications like Caliptra. Engineers should evaluate how pre-integrated commercial subsystems can simplify the path to achieving complex industry security certifications.
Further reading
Learn more about the latest innovations in Semiconductors.
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