Method and apparatus for protecting information and privacy

US8327453B2 · kind B2 · utility

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: Apr 27, 2010
• Grant date: Dec 4, 2012
• Expiry date: May 29, 2030

Classification

• Technology area (CPC G): Physics
• CPC primary: G06F21/1077
• WIPO field: Computer technology
• WIPO sector: Electrical 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.