| 摘要 |
Original electronic information Or is divided into small information pieces, which are replaced in order and then classified into a plurality of information groups to form a plurality of divided electronic information G1, G2, ...and a key file K where the division and order replacement method is recorded is created. The key file K and if necessary, one divided electronic information are stored as deposition electronic information in a storage of a third-party deposition organization TTP and the divided electronic information is delivered to concerned parties A, B, ... so as to be stored in their storage devices. As occasion demands, the divided electronic information G1, G2, ... stored in the concerned parties and the deposition electronic information stored in the third-party deposition organization TTP are collected and the original electronic information Or is restored in accordance with the division and order replacement method stored in the key file K. Thus, the electronic information is verified according to the aforementioned method without disclosing the information to the intervening deposition organization.
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