Countermeasure to power analysis attacks through time-varying impedance of power delivery networks

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United States of America Patent

PATENT NO 9755822
APP PUB NO 20150195082A1
SERIAL NO

14307453

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Abstract

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A method and system for a countermeasure to power analysis attacks, where an impedance element is coupled to a power source providing power to a cryptographic module causing a measurable power supply noise, a timing sequence is generated, and the impedance element is decoupled from the power source based on the timing sequence to cause the measurable power supply noise to vary according to the timing sequence.

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Patent Owner(s)

Patent OwnerAddress
CRYPTOGRAPHY RESEARCH INC4453 NORTH FIRST STREET SUITE 100 SAN JOSE CA 95134

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Han, Minghui San Jose, US 7 66
Lan, Hai Fremont, US 24 95
Wachs, Megan San Francisco, US 5 418

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