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:
Sep. 13, 2016
Filed:
Mar. 31, 2011
Jonathan Emmett, Almonte, CA;
Philip Allan Eisen, Ottawa, CA;
James Muir, Kanata, CA;
Daniel Murdock, Nepean, CA;
Jonathan Emmett, Almonte, CA;
Philip Allan Eisen, Ottawa, CA;
James Muir, Kanata, CA;
Daniel Murdock, Nepean, CA;
Irdeto B.V., Hoofddorp, NL;
Abstract
A method of protecting the execution of a cryptographic hash function, such as SHA-256, in a computing environment where inputs, outputs and intermediate values can be observed. The method consists of encoding input messages so that hash function inputs are placed in a transformed domain, and then applying a transformed cryptographic hash function to produce an encoded output digest; the transformed cryptographic hash function implements the cryptographic hash function in the transformed domain.