Attribute based generalized signcryption for online social network

作者:Yiliang Han; Wanyi Lu
来源:34th Chinese Control Conference, CCC 2015, 2015-07-28 To 2015-07-30.
DOI:10.1109/ChiCC.2015.7260653

摘要

Online social network has brought varies and flexible secure demands. Attribute based generalized signcryption (ABGSC) could bring the combined or separate confidentiality and authentication adaptively, and eliminate the bottleneck of traditional public key encryption. We proposed an attribute based generalized signcryption with non-monotonic access structures, which can perform signcryption, encryption and signature adaptively. The non-monotonic access structure is used to realize the 'OR', 'AND', 'NEG'and 'Threshold'operations;the Inner Product is used to achieve constant cipher text. Under the encryption mode, the cipher text length is 2G+nm, under the signature mode it is 3G+nm, and under the signcryption mode is 5G+nm, so we can improve the efficiency greatly. Under the q-DBDHE assumption in the stand model, the scheme is proved confidential under the signcryption and encryption mode, and is proved unforgeable under the signcryption and signature mode.

  • 出版日期2015

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