Patent · US Active

Master key encryption functions for transmitter-receiver pairing as a countermeasure to thwart key recovery attacks

US9094191B2 · kind B2 · utility

23Cited by

2References

39Claims

0Family size

Assignee

QUALCOMM Incorporated · US

Inventors

Roberto Avanzi · Munich, DE
Boris Dolgunov · San Jose, US
Gregory G. Rose · Mortlake, AU

Key dates

Filing date	Mar 14, 2013
Grant date	Jul 28, 2015
Priority date	—
Expiry date	Aug 14, 2033

Classification

Technology area (CPC H)Electricity
CPC primaryH04L2209/76
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

A method operational on a receiver device for exchanging and/or generating security keys is provided. A first encrypted master key Km is received at the receiver device from a transmitter device, the first encrypted master key Km secured by a receiver public key Kpub-rx. The first encrypted master key Km may be decrypted with a receiver private key Kpri-rx to obtain the master key Km. The master key Km may be encrypted using a block cipher that applies a receiver secret key Kh to obtain a second encrypted master key.

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