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:
Dec. 13, 2011
Filed:
Dec. 30, 2004
Hideo Yamamoto, Kanagawa, JP;
Naofumi Hanaki, Kanagawa, JP;
Katsuyuki Teruyama, Tokyo, JP;
Tomohiko Nagayama, Tokyo, JP;
Masahiro Sueyoshi, Kanagawa, JP;
Yoshiaki Hirano, Kanagawa, JP;
Hideo Yamamoto, Kanagawa, JP;
Naofumi Hanaki, Kanagawa, JP;
Katsuyuki Teruyama, Tokyo, JP;
Tomohiko Nagayama, Tokyo, JP;
Masahiro Sueyoshi, Kanagawa, JP;
Yoshiaki Hirano, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
An encryption apparatus capable of effectively preventing encryption data from being illegally generated is provided. Based on apparatus identification data of an integrated circuit (IC), which is input from a computer, a secure application module (SAM) selects an encryption method from among a plurality of different encryption methods. Based on the code of the IC, the SAM selects plaintext data to be encrypted from among the plurality of different pieces of plaintext data. The SAM outputs encryption data such that the selected plaintext data is encrypted by the selected encryption method.