Invention Grant
US08438377B2 Information processing apparatus, method and computer-readable storage medium that encrypts and decrypts data using a value calculated from operating-state data
有权
信息处理装置,方法和计算机可读存储介质,其使用从操作状态数据计算的值对数据进行加密和解密
- Patent Title: Information processing apparatus, method and computer-readable storage medium that encrypts and decrypts data using a value calculated from operating-state data
- Patent Title (中): 信息处理装置,方法和计算机可读存储介质,其使用从操作状态数据计算的值对数据进行加密和解密
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Application No.: US12756483Application Date: 2010-04-08
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Publication No.: US08438377B2Publication Date: 2013-05-07
- Inventor: Shigeya Senda
- Applicant: Shigeya Senda
- Applicant Address: JP Tokyo
- Assignee: Ricoh Company, Limited
- Current Assignee: Ricoh Company, Limited
- Current Assignee Address: JP Tokyo
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2009-100706 20090417; JP2010-025656 20100208
- Main IPC: G06F9/00
- IPC: G06F9/00 ; G06F15/177

Abstract:
An information processing apparatus includes a main memory unit storing while on-power; an auxiliary storage unit functionable even off-power; a control unit performing hibernation of generating operating-state data indicating a state when the power is lost, storing the data in the auxiliary storage unit, and, when restored, reading the data from the auxiliary storage unit; and a security chip that including a configuration register, encrypts data, and storing the data in the auxiliary storage unit. The control unit includes: a first registration unit performing, when the data is generated, calculation based thereon to obtain a calculated value; a second registration unit performing, when the data is read from the auxiliary storage unit at the hibernation, calculation based on the data to obtain a calculated value to write it into the configuration register; and a verification unit performing verification at boot-up from the hibernation based on the value written.
Public/Granted literature
- US20100268967A1 INFORMATION PROCESSING APPARATUS, AND METHOD AND COMPUTER PROGRAM PRODUCT FOR VERIFICATION Public/Granted day:2010-10-21
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