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:
Mar. 01, 2016
Filed:
Nov. 05, 2010
Applicants:
Augustin J. Farrugia, Cupertino, CA (US);
Mathieu Ciet, Paris, FR;
Pierre Betouin, Boulonge, FR;
Inventors:
Assignee:
APPLE INC., Cupertino, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 12/14 (2006.01); G06F 21/12 (2013.01); G06F 21/14 (2013.01); G06F 21/64 (2013.01); H04L 9/00 (2006.01); H04L 9/32 (2006.01);
U.S. Cl.
CPC ...
G06F 12/1408 (2013.01); G06F 21/125 (2013.01); G06F 21/14 (2013.01); G06F 21/64 (2013.01); H04L 9/002 (2013.01); H04L 9/3239 (2013.01); H04L 2209/043 (2013.01); H04L 2209/16 (2013.01);
Abstract
In the field of computer software (code) security, it is known to include verification data such as hash values in or associated with the code to allow subsequent detection of tampering by a attacker with the code. This verification technique is used here in a 'White Box' cryptographic process by tying the verification data to the content of functional table lookups present in the object (compiled) code, where values in the table lookups are selectively masked (prior to the source code being compiled into the subject code) by being subject to permutation operations.