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:
Aug. 16, 2016
Filed:
Feb. 20, 2012
Kyoji Shibutani, Tokyo, JP;
Toru Akishita, Tokyo, JP;
Takanori Isobe, Tokyo, JP;
Taizo Shirai, Kanagawa, JP;
Harunaga Hiwatari, Kanagawa, JP;
Atsushi Mitsuda, Tokyo, JP;
Kyoji Shibutani, Tokyo, JP;
Toru Akishita, Tokyo, JP;
Takanori Isobe, Tokyo, JP;
Taizo Shirai, Kanagawa, JP;
Harunaga Hiwatari, Kanagawa, JP;
Atsushi Mitsuda, Tokyo, JP;
SONY CORPORATION, Tokyo, JP;
Abstract
Included is an encryption processing unit configured to divide and input configuration bits of data to be data processed into a plurality of lines, and to repeatedly execute data conversion processing of data for each line. The encryption processing unit includes an F function execution unit to input data from one line configuring the plurality of lines and generate converted data, an XOR calculation unit to execute an XOR calculation with other lines of data corresponding to the output from the F function, an intermediate data storage register to store intermediate data during the process of generating converted data in the F function execution unit, and an inverse calculation executing unit to calculate input data regarding the F function execution unit on the basis of the data stored in the intermediate storage register.