Cryptography Research Announces Licence Agreement for Differential Power Analysis Countermeasures Patents with Renesas Technology

SAN FRANCISCO, Calif.—(BUSINESS WIRE)—September 16, 2008— Cryptography Research Inc. (CRI) today announced an agreement with Renesas Technology Corp. regarding the use of CRI's patents to enhance the security of tamper-resistant smart card chips against Differential Power Analysis (DPA) and related attacks.

Renesas has the freedom to use CRI's patents as part of its strategy to develop and enhance its secure chips and related software for smart cards and other security-conscious applications. The license also covers software executing on Renesas chips, allowing 'Reneasas' customers to develop their own security countermeasures without a separate license from CRI.

"Renesas is one of the leading international semiconductor device manufacturers and has a track-record of offering intelligent microchip solutions to its customers," said Kit Rodgers, vice president of licensing at CRI. "We are pleased that Renesas licensed our patents to help with its ongoing efforts to produce state-of-the-art security chips for smart cards and other applications."

DPA is a form of attack that involves monitoring the fluctuating electrical power consumption of a target device and then using advanced statistical methods to derive cryptographic keys and other secrets. Strong countermeasures to DPA help protect keys contained in tamper-resistant devices, such as smart cards or electronic IDs, which may be used in banking, pay television, mass transit, secure ID, wireless telecommunications, and other industries.

Cryptography Research has been awarded a portfolio of patents covering countermeasures to DPA attacks, including U.S. patents #6,278,783; #6,298,442; #6,304,658; #6,327,661; #6,381,699; #6,510,518; #6,539,092; #6,654,884 and other US and international patents pending.

About Cryptography Research, Inc.

Cryptography Research, Inc. develops and licenses technology to solve complex security problems. In addition to security evaluation and applied engineering work, the company is actively involved in long-term research in areas including tamper resistance, content protection, network security and financial services. The company has a broad portfolio of patents covering countermeasures to differential power analysis and other vulnerabilities, and is committed to helping companies produce secure smart cards and other tamper resistant devices. Security systems designed by Cryptography Research engineers protect more than USD100 billion of commerce annually for wireless, telecommunications, financial, digital television, entertainment, and Internet industries. For additional information, please visit


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