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International Journal of Research in Computer & Information Technology (IJRCIT)
More and more companies begin to provide different kinds of cloud computing services for Internet users at the same time these services also bring some security problems. Currently the majority of cloud computing systems provide digital identity for users to access their services, this will bring some inconvenience for a hybrid cloud that includes multiple private clouds and/or public clouds. Today most cloud computing system use asymmetric and traditional public key cryptography to providefatcat:f7j4nkrsvfdgzn2zio6rwusw3a