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:
Jul. 06, 2010
Filed:
Jul. 10, 2002
Katsuhiko Sato, Soraku-gun, JP;
Yuji Sawada, Osaka, JP;
Katsuhiko Sato, Soraku-gun, JP;
Yuji Sawada, Osaka, JP;
Sharp Kabushiki Kaisha, Osaka-Shi, JP;
Abstract
Data to be encrypted () is partially extracted successively. A result of encrypting a previously extracted portion of the data is used to successively calculate that of encrypting the currently extracted portion of the data successively. Successively calculated results of the encryption are used to generate encrypted data (). In generating the encrypted data, a finally calculated result of the encryption (PF(z+1)) is attached to the generated encrypted data. The finally calculated result is used as falsification detecting data () for detecting whether the data to be encrypted is falsified data.