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In the original copy Characteristic guarantee electronic retention device which guarantees the original copy Characteristic of the electronic data which the original copy Characteristic guarantee electronic retention device, possesses the first storage which is the storage
In the original copy Characteristic guarantee electronic retention device which guarantees the original copy Characteristic of the electronic data which the original copy Characteristic guarantee electronic retention device, possesses the first storage which is the storage
PROBLEM TO BE SOLVED: To efficiently prevent a large capacity storage medium from being illegally replaced as it is brought back into a past state.;SOLUTION: When electronic data are stored, a medium authentication code list 34 consisting of a pair of a medium identification number and a list device signature 29 is pre-stored in an internal recording medium, and when the large capacity storage medium 13 is loaded on a device main body and mount- processed the validity of the large capacity storage medium 13 is verified by processing a stored file list by verification operation.;COPYRIGHT: (C)2001,JPO
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