Patent · US Active

Cryptographic security using fuzzy credentials for device and server communications

US8762723B2 · kind B2 · utility

7Cited by

1References

16Claims

0Family size

Assignee

Verayo, Inc. · US

Inventors

Meng-Day Yu · Fremont, US
Srinivas Devadas · Lexington, US
David M'Raihi · Redwood City, US
Eric Duprat · Los Altos, US

Key dates

Filing date	Jul 6, 2012
Grant date	Jun 24, 2014
Priority date	—
Expiry date	Jul 6, 2032

Classification

Technology area (CPC H)Electricity
CPC primaryH04L9/0866
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

An approach to cryptographic security uses a “fuzzy” credential, in contrast to a “hard” credential, to eliminate cryptographic algorithmic repeatability on a device that may be subject to physical attacks. By eliminating repeatability performed at an algorithmic (e.g., gate or software) level, a device inherently lacks one of the fundamental setup assumptions associated with certain classes of side channel, fault injection, timing, and related attacks, thus helps to protect the system against such attacks while preserving the cryptographic security of the system.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.