Encryption key management program, data management system
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United States of America Patent
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Jul 21, 2015
Grant Date -
Jun 26, 2014
app pub date -
Jul 18, 2013
filing date -
Dec 25, 2012
priority date (Note) -
In Force
status (Latency Note)
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Abstract
An objective of the present invention is to ensure security of the file sharing function provided by cloud storages without significantly decreasing the convenience of cloud storages. The encryption key management program according to the present invention encrypts, using authentication information of a user, a group shared key shared in a user group and stores it as an encrypted group shared key. The encryption key management program, upon receiving a request from a user, sends the encrypted group shared key corresponding to the requesting user.
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