The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 09, 2010
Filed:
Sep. 13, 2006
Philip Mackenzie, San Jose, CA (US);
Zulfikar Amin Ramzan, San Mateo, CA (US);
Craig B. Gentry, Mountain View, CA (US);
Philip Mackenzie, San Jose, CA (US);
Zulfikar Amin Ramzan, San Mateo, CA (US);
Craig B. Gentry, Mountain View, CA (US);
NTT DoCoMo, Inc., Tokyo, JP;
Abstract
A protocol for closing all active communication links between one device () and one or more other devices in a group provides that the first device sets up the group by generating an input to a predefined function (e.g. one-way function) according to some random distribution, computing the output of the one-way function, and sharing the output value with all other devices in the group. Then to close all communication links, the first device broadcasts the stored input to all other devices in the group. The other devices may check that the one-way function applied to this input results in the shared output value, and if so, close the communication link.