Cryptography Research, Inc..
is a San Francisco
based cryptography company specializing in applied cryptographic engineering, including technologies for building tamper-resistant semiconductors. The company licenses patents for protecting cryptographic devices against power analysis
attacks. The company's CryptoFirewall-brand ASIC cores are 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