摘要：Cloud computing has become a victorious archetype for data storage, aswell as for computation purposes. Greater than ever it concerns user’s privacy, sothat data security in a cloud is increasing day by day. Ensuring security andprivacy for data organization and query dispensation in the cloud is important forsuperior and extended uses of cloud based technologies. Cloud users can barelyhave the full benefits of cloud computing if we can ensure the real user’s privacyand his data security concerns this approach along with storing thin-skinnedpersonal information in databases and software spread around the cloud. There arenumerous service suppliers in WWW (World Wide Web), who can supply eachservice as a cloud. These cloud services will switch over data with a supplementarycloud, so that when the data is exchanged between the clouds, the problem ofconfidentiality revelation exists. So the privacy revelation problem concerning aperson or a corporation is unavoidably open when releasing or data distributing inthe cloud service. Confidentiality is a significant issue in any cloud computingenvironment. In this paper we propose and implement a mechanism to maintainprivacy and secure data storage for group members or a community in cloudenvironment.
关键词：Cloud computing; privacy; data security; community; GDH
