Patent · US Active

Method and apparatus for protecting information and privacy

US7991995B2 · kind B2 · utility

55Cited by

85References

20Claims

0Family size

Assignee

ShieldIP, Inc. · US

Inventors

Michael O. Rabin · Cambridge, US
Dennis Shasha · New York, US
Yossi Beinart · New York, US
Ramon Caceres · New York, US
Timir Karia · New York, US
David Molnar · Seattle, US
Sean Rolinson · New York, US

Key dates

Filing date	Jun 20, 2008
Grant date	Aug 2, 2011
Priority date	—
Expiry date	Oct 10, 2029

Classification

Technology area (CPC G)Physics
CPC primaryG06F21/1077
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

A system for protecting software against piracy while protecting a user's privacy enables enhancements to the protection software in a user device and extended protections against piracy. The protection system allows the user device to postpone validation of purchased tags stored in a tag table for installed software and to re-establish ownership of a tag table to recover from invalidation of a tag table identifier value resulting from revelation of a tag table identifier value. Continued use of the tag table is provided by the use of credits associated with a tag table. A protection center is protected against denial of service attacks by making calls to the protection center cost time or money to the attackers.

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