Information processing device, information processing method, and computer program product

An information processing method implemented by a computer, the method comprising:

• storing, to a memory, a flag table in which file information for individually identifying one or more pieces of software is associated with a flag used for execution control of a corresponding one of the pieces of software;
• when rewrite of first software being one of the pieces of software is detected, performing a rewrite process of extracting first file information being the file information corresponding to the first software and changing a first flag corresponding to the first file information in the flag table to a first value indicating that verification of integrity of the first software for which rewrite is detected is required, based on the extracted first file information;
• and
• performing a software authorized change process of changing a file of the first software in an authorized manner,
• wherein the software authorized change process includes changing, when the changing a file of the first software in an authorized manner is performed, the first value, which has been changed by the rewrite processing, to a second value indicating permission of execution of the first software.

A computer program product comprising a non-transitory computer-readable recording medium on which an executable program is recorded, the program instructing a computer to:

• store, to a memory, a flag table in which file information for individually identifying one or more pieces of software is associated with a flag used for execution control of a corresponding one of the pieces of software;
• when rewrite of first software being one of the pieces of software is detected, perform a rewrite process of extracting first file information being the file information corresponding to the first software and changing a first flag corresponding to the first file information in the flag table to a first value indicating that verification of integrity of the first software for which rewrite is detected is required, based on the extracted first file information;
• and
• perform a software authorized change process of changing the first software in an authorized manner,
• wherein the software authorized change process includes changing, when the changing a file of the first software in an authorized manner is performed, the first value to a second value indicating permission of execution of the first software.