A computer-readable recording medium storing a program for causing a computer to execute the method originality assurance electronic storage device, and originality assurance electronic storage method

摘要

PROBLEM TO BE SOLVED: To efficiently guarantee the originality of a composite document comprising multiple files by providing an access control means which performs access control of different level between electronic data of an original stored by a storage means and electronic data other than the electronic data of the original. SOLUTION: A processor 106 reads out and executes various programs such as a main control program, a hash program, a key generation program, a ciphering program, and a deciphering program stored on a program storage medium 103. Electronic data composed of multiple content files are saved as one original on a large-capacity storage medium 101 and when the processor 106 accesses the electronic data on this large-capacity storage medium 101, the level of access control is made different between the original and others, so the originality of the composite document formed of the files can efficiently be guaranteed.