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:
Apr. 29, 2014
Filed:
Feb. 04, 2008
Kazuhiko Ikeuchi, Kawasaki, JP;
Mikio Ito, Kawasaki, JP;
Hidejirou Daikokuya, Kawasaki, JP;
Kazuo Nakashima, Kawasaki, JP;
Chikashi Maeda, Kawasaki, JP;
Fumio Hanzawa, Kawasaki, JP;
Kazuhiko Ikeuchi, Kawasaki, JP;
Mikio Ito, Kawasaki, JP;
Hidejirou Daikokuya, Kawasaki, JP;
Kazuo Nakashima, Kawasaki, JP;
Chikashi Maeda, Kawasaki, JP;
Fumio Hanzawa, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A code conversion apparatus, a disk drive, a code buffer, and an encryption buffer are included in a storage. The code buffer stores therein first encrypted data present in the disk drive, and the encryption buffer stores therein first unencrypted data present in the disk drive. An encrypting unit encrypts the first unencrypted data present in the encryption buffer to predetermined encrypted data, and a decrypting unit decrypts the first encrypted data present in the code buffer to second unencrypted data. Moreover, a re-encrypting unit decrypts the first encrypted data present in the code buffer to third unencrypted data and encrypts the third unencrypted data to second encrypted data different from the first encrypted data.