Invention Grant
US08155320B2 Data storage device, management server, integrated circuit, data update system, home electric apparatuses, data update method, encryption method, and encryption/decryption key generation method
有权
数据存储装置，管理服务器，集成电路，数据更新系统，家用电器，数据更新方法，加密方法以及加密/解密密钥生成方法
- Patent Title: Data storage device, management server, integrated circuit, data update system, home electric apparatuses, data update method, encryption method, and encryption/decryption key generation method
- Patent Title (中): 数据存储装置，管理服务器，集成电路，数据更新系统，家用电器，数据更新方法，加密方法以及加密/解密密钥生成方法
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Application No.: US12303420Application Date: 2007-06-05
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Publication No.: US08155320B2Publication Date: 2012-04-10
- Inventor: Hisashi Takayama
- Applicant: Hisashi Takayama
- Applicant Address: JP Osaka
- Assignee: Panasonic Corporation
- Current Assignee: Panasonic Corporation
- Current Assignee Address: JP Osaka
- Agency: Greenblum & Bernstein, P.L.C.
- Priority: JP2006-160284 20060608; JP2007-146869 20070601
- International Application: PCT/JP2007/061383 WO 20070605
- International Announcement: WO2007/142240 WO 20071213
- Main IPC: H04L9/00
- IPC: H04L9/00
Abstract:
Provided is a data storage device capable of safely and effectively updating software of a home electric apparatus. In the home electric apparatus (100) in which currently used data is to be updated to new data, a reception unit (140) receives encrypted new data and a serial number of data to be updated. A key generation unit (112) generates a key by executing a predetermined irreversible calculation on the unique information correlated to the currently used data by a number of times based on the serial number of the data to be updated. An update unit (113) decrypts the new data by using the key.
Public/Granted literature
Information query
