摘要 |
The user mounts a distributed storage medium in his or her terminal unit, selects desired information from stored information, and notifies the host central computer through a network. The host computer generates key information for use in deciphering the selected information by combining the identifier of the selected information, user identification, etc. and sends the key information to a user terminal unit. The user deciphers the selected information according to the transmitted key information, and then accesses the information.
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