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:
May. 27, 2014
Filed:
Apr. 28, 2010
Takeshi Umezuki, Kawasaki, JP;
Takeshi Umezuki, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A user terminal reads out an encrypted content from a removable memory medium, assigns data forming the read encrypted content to the same hash function, and computes a first hash value. The management apparatus acquires the computed first hash value and management information from the user terminal, reads out, from a management information memory that stores a second hash value previously computed by assigning data forming the encrypted content retaining its authenticity to the hash function in association with the management information, the corresponding second hash value by using the acquired management information as a retrieval key, authenticates whether the acquired first hash value and the second hash value are identical, and permits a decryption process when the authentication result is an authentication success.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile