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. 20, 2022
Filed:
Dec. 22, 2020
Fujitsu Limited, Kawasaki, JP;
FUJITSU LIMITED, Kawasaki, JP;
Abstract
A verification method implemented by a first system including a plurality of computers, the method includes: calculating a first hash value for an original document; calculating a second hash value for an original document by using the first hash value; calculating a first modified version's first hash value for the first modified version document; calculating a first modified version's second hash value that is a hash value obtained by combining the first modified version's first hash value and the original document's second hash value; in response to a second modified version document obtained by modifying the first modified version document, calculating a second modified version's first hash value for the second modified version document; and calculating a second modified version's second hash value that is a hash value obtained by combining the second modified version's first hash value and the first modified version's second hash value.