发明授权
US09088557B2 Encryption key management program, data management system 有权
加密密钥管理程序,数据管理系统

Encryption key management program, data management system
摘要:
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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