Patent · US Expired

Computer system for protecting software and a method for protecting software

US6678665B1 · kind B1 · utility

16Cited by

17References

44Claims

0Family size

Assignee

Fujitsu Siemens Computers GmbH · DE

Inventors

Glenn S. Benson · Newton, US
Markus Dichtl · Birkenfeld, DE

Key dates

Filing date	Oct 2, 1997
Grant date	Jan 13, 2004
Priority date	—
Expiry date	Apr 24, 2019

Classification

Technology area (CPC H)Electricity
CPC primaryH04L2209/605
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

A method for protecting an item of software, wherein at least one challenge means is associated with said protected item of software, and at least one response means accesses one private keying material. The challenge means has no access to said private keying material. The response means proves to the challenge means that the response means has access to the private keying material using an asymmetric probabilistic proof, e.g., zero knowledge proof. The challenge means validates this proof using the public keying material that corresponds to the response means' private keying material.

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