data originality secure method and system, as well as data originality reserved for the program

摘要

PROBLEM TO BE SOLVED: To provide a method and a system for securing data originality and a program for securing data originality capable of preserving data while more easily securing its originality.;SOLUTION: A system 1 for securing data originality comprises: a divided data generation part 13 which uses a secret dispersion method to divide source data into a plurality of pieces of division data D(1) to D(4) respectively from which the source data can be restored; and a plurality of storage servers 3a1 to 3a4 which are independent in a hardware manner to respectively store the plurality of pieces of divided division data D(1) to D(4).;COPYRIGHT: (C)2014,JPO&INPIT