SECRET DOCUMENT MANAGEMENT DEVICE, SECRET DOCUMENT MANAGEMENT METHOD, AND SECRET DOCUMENT MANAGEMENT PROGRAM

摘要

PROBLEM TO BE SOLVED: To prevent leak of secret information even in case of an operation error by a regular user.

SOLUTION: An application monitoring mean 4 intercepts an event message. An application state management means 6 estimates the execution state of application software 2 based on application knowledge 5, and updates an application state table. A coding/decoding determination means 9 updates a coding/decoding determination table based on the update result and secret document treatment knowledge 11. A secret document file access control means 7 intercepts read data or written data. The secret document file access control means 7 makes the coding/decoding determination means 9 determine whether a document is to be coded or decoded and, as occasion demands, makes a coding/decoding means 8 code or decode the document.

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