Patent · US Active

Methods and apparatus for digital attestation

US9077543B2 · kind B2 · utility

13Cited by

6References

19Claims

0Family size

Assignee

Apple Inc. · US

Inventors

Achim Luft · Braunschweig, DE
Maik Bienas · Braunschweig, DE
Andreas Schmidt · Braunschweig, DE

Key dates

Filing date	Oct 9, 2009
Grant date	Jul 7, 2015
Priority date	—
Expiry date	Jan 21, 2033

Classification

Technology area (CPC H)Electricity
CPC primaryH04W64/00
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

Methods and apparatus for providing proof of multiple entities being co-located at a specific time and location. An attestor transmits an attestation message via short range communication; the attestation message includes a time stamp, a location stamp, and a verifiable digital signature. An attestee that stores the attestation message can produce the attestation message at a later time to any interested party, as proof of co-location with the attestor at the specified time and location. In one exemplary embodiment, the methods and apparatus are substantially “open” for public implementation. Such public implementation enables attestors and attestees without prior affiliation, to provide attestation. Furthermore, the device-agnostic methods and apparatus can provide attestation capabilities even in previously deployed systems and devices.

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