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• W2032958248 abstract "With the popularity of group data sharing in public cloud computing, the privacy and security of group sharing data have become two major issues. The cloud provider cannot be treated as a trusted third party because of its semi-trust nature, and thus the traditional security models cannot be straightforwardly generalized into cloud based group sharing frameworks. In this paper, we propose a novel secure group sharing framework for public cloud, which can effectively take advantage of the cloud servers' help but have no sensitive data being exposed to attackers and the cloud provider. The framework combines proxy signature, enhanced TGDH and proxy re-encryption together into a protocol. By applying the proxy signature technique, the group leader can effectively grant the privilege of group management to one or more chosen group members. The enhanced TGDH scheme enables the group to negotiate and update the group key pairs with the help of cloud servers, which does not require all of the group members been online all the time. By adopting proxy re-encryption, most computationally intensive operations can be delegated to cloud servers without disclosing any private information. Extensive security and performance analysis shows that our proposed scheme is highly efficient and satisfies the security requirements for public cloud based secure group sharing." @default.
• W2032958248 created "2016-06-24" @default.
• W2032958248 creator A5023767649 @default.
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• W2032958248 date "2014-10-01" @default.
• W2032958248 modified "2023-10-10" @default.
• W2032958248 title "A Dynamic Secure Group Sharing Framework in Public Cloud Computing" @default.
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• W2032958248 doi "https://doi.org/10.1109/tcc.2014.2366152" @default.
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