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
  • Application No.: US12756483
    Application Date: 2010-04-08
  • Publication No.: US08438377B2
    Publication 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
Information processing apparatus, method and computer-readable storage medium that encrypts and decrypts data using a value calculated from operating-state data
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.
Information query
Patent Agency Ranking
0/0