Title:
暗号化プログラム復号方法及び暗号化プログラム復号プログラム
Document Type and Number:
Japanese Patent JP4502359
Kind Code:
B2
Abstract:
To provide a data decryption method to prevent a third person from easily performing the reverse engineering of software.
When an execution program is decrypted and developed on the memory of electronic equipment, the position on the memory is made hardly recognizable from a user, and those positions are made different depending on the electronic equipment where the execution program is developed or circumstances such as time when the execution program is developed. Thus, the reverse engineering of the decrypted program can be hardly executed.
COPYRIGHT: (C)2005,JPO&NCIPI
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Inventors:
Hideaki Ogawa
Application Number:
JP2003299298A
Publication Date:
July 14, 2010
Filing Date:
August 22, 2003
Export Citation:
Assignee:
Hypertech Co., Ltd.
International Classes:
G06F12/14; G06F1/00; G06F21/12; G06F21/14; G06F21/60; G06F21/62; G09C1/00
Domestic Patent References:
| JP2001175466A | ||||
| JP10334163A | ||||
| JP11045212A | ||||
| JP2002132364A |
Attorney, Agent or Firm:
Ichiro Kudo