Title:
MEMORY MANAGEMENT DEVICE
Document Type and Number:
WIPO Patent Application WO/2011/096073
Kind Code:
A1
Abstract:
In the conventional method of maintaining the confidential a program, wherein a program to be executed in an information processing device is stored in a hard disk, etc., in an encrypted state and the program is decrypted when it is executed, because a decrypted program is written in memory, the program may be illicitly analyzed by a third person. Provided is memory management method wherein code information or data of a program written in a virtual memory is data which is encrypted and inaccessible by a CPU, and when code fetching or data access to the encrypted area occurs, an interruption process is performed wherein with respect to a management unit of the memory management device including the area, an inaccessible state is changed to an accessible state to perform decryption.
Inventors:
OGAWA MUTSUMI (JP)
Application Number:
PCT/JP2010/051747
Publication Date:
August 11, 2011
Filing Date:
February 08, 2010
Export Citation:
Assignee:
OGAWA MUTSUMI (JP)
International Classes:
G06F21/14; G06F21/74; G06F21/78; G06F21/79; G06F21/80
Foreign References:
| JP2001230770A | 2001-08-24 | |||
| JP2004272816A | 2004-09-30 | |||
| JP2010039576A | 2010-02-18 |
Attorney, Agent or Firm:
KUDO ICHIRO (JP)
Ichiro Kudo (JP)
Ichiro Kudo (JP)
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Claims: