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Patent Searching and Data


Title:
INFORMATION MASKING METHOD
Document Type and Number:
Japanese Patent JPH09244959
Kind Code:
A
Abstract:

To secure the access execution capability that is equivalent to a global data variable without performing any excessive decision processing in an execution mode and with no consciousness of the data variable type by previously converting and registering the name of the data variable to be masked by a certain conversion rule.

The name of the data variable to be masked is previously converted and registered by a certain conversion rule. That is, the name of a private slot that is described by a user is converted into a unique name based on a fixed rule in an internal structure. At the same time, the private slot included in the method of a definer is also converted into a unique name based on the same rule in the internal structure. When the user designates a private slot, the character string of the slot name is converted based on a fixed rule and registered in an internal table. The character string of the private slot name included in the definer method is also converted into a unique name based on the same rule and then registered in the internal table.


Inventors:
TAKAOKA KAZUHIRO
FUJISATO HISAMI
SHIRAISHI YOSHITO
Application Number:
JP5441396A
Publication Date:
September 19, 1997
Filing Date:
March 12, 1996
Export Citation:
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Assignee:
HITACHI LTD
HITACHI SOFTWARE ENG
International Classes:
G06F12/14; G06F9/44; G06F21/62; G06N5/04; (IPC1-7): G06F12/14; G06F9/44
Attorney, Agent or Firm:
Ogawa Katsuo