Private company

Cryptography Research

Cryptography Research, Inc. was a San Francisco based cryptography company specializing in applied cryptographic engineering, including technologies for building tamper-resistant semiconductors.1

Last updated Oct 18, 2026.

Overview

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Cryptography Research, Inc. was a San Francisco based cryptography company specializing in applied cryptographic engineering, including technologies for building tamper-resistant semiconductors. It was purchased on June 6, 2011, by Rambus for $342.5M and remained active as a subsidiary until 2015. The company licensed patents for protecting cryptographic devices against power analysis attacks. The company's CryptoFirewall-brand ASIC cores were used in pay TV conditional access systems and anti-counterfeiting applications. CRI also developed BD+, a security component in the Blu-ray disc format, and played a role in the format war between HD DVD and Blu-ray. The company's services group assisted with security testing, disaster recovery, and training.2

Sources

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