The research of access control based on attribute encryption has been implemented in cloud storage
which is mostly based on single authorization center
may result in the leakage of key.Proposing a CP-ABE design of a multi access control scheme based on reference proxy server (Proxy Server
PS)
to help users to undertake a large number of decryption operation; Problems with high security attributes revocation algorithm for processing; Finally
using the bilinear decision (Decision Bilinear Diffie-Hellman
DBDH) proved to be the chosen plaintext attack security.
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references
Pedersen T P. A threshold cryptosystem without atrustedparty[M]//Advancesin Cryptology- EURO-CRYPT ' 91. Springer Berlin Heidelberg, 1994: 522-526.
Yang K, Jia X, Ren K, et al. DAC-MACS: Effective data access control for multi-authority cloud storage systems[C]//INFOCOM, 2013 Proceedings IEEE. IEEE, 2014: 2895-2903.
Li W, Xue K, Xue Y, et al. TMACS: A robust and verifiable threshold multi-authority access control system in public cloud storage[J]. IEEE Transactions on Parallel % amp; amp; Distributed Systems, 2016, 27 (5): 1484-1496. DOI: 1484