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:
Aug. 11, 2020
Filed:
Feb. 04, 2016
International Business Machines Corporation, Armonk, NY (US);
Yinnon Haviv, Herzliya, IL;
Roee Hay, Haifa, IL;
Marco Pistoia, Hawthorne, NY (US);
Guy Podjarny, London, GB;
Adi Sharabani, Herzliya, IL;
Takaaki Tateishi, Yamato, JP;
Omer Tripp, Herzliya, IL;
Omri Weisman, Tel Aviv, IL;
INTERNATIONAL BUSINESS MACHINES CORPORATION, Armonk, NY (US);
Abstract
A system and method for static detection and categorization of information-flow downgraders includes transforming a program stored in a memory device by statically analyzing program variables to yield a single assignment to each variable in an instruction set. The instruction set is translated to production rules with string operations. A context-free grammar is generated from the production rules to identify a finite set of strings. An information-flow downgrader function is identified by checking the finite set of strings against one or more function specifications.