Shared Authority Based Privacy-Preserving Authentication Protocol in Cloud Computing
Abstract— Shared Authority Based Privacy-Preserving Authentication Protocol in Cloud Computing. Cloud computing is an emerging data interactive paradigm to realize users’ data remotely stored in an online cloud server. Cloud services provide great conveniences for the users to enjoy the on-demand cloud applications without considering the local infrastructure limitations. < Final Year Project 2016 > During the data accessing, different users may be in a collaborative relationship, and thus data sharing becomes signiﬁcant to achieve productive beneﬁts. The existing security solutions mainly focus on the authentication to realize that a user’s privative data cannot be illegally accessed, but neglect a subtle privacy issue during a user challenging the cloud server to request other users for data sharing. The challenged access request itself may reveal the user’s privacy no matter whether or not it can obtain the data access permissions.
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