Forward-secure ciphertext-policy attribute-based encryption scheme

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To mitigate the damage of key exposure in the context of ciphertext-policy attribute-based encryption (CP-ABE). The syntax and security model of forward-secure CP-ABE was presented. Then, a concreted forward-secure CP-ABE scheme was constructed. Under the l-BDHE assumption, the proposed scheme was p...

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Bibliographic Details
Published in:Tongxin xuebao
Main Authors: EIJiang-hong W, IUWen-fen L, UXue-xian H
Format: Article
Language:Chinese
Published: Editorial Department of Journal on Communications 2014-07-01
Subjects:
forward-secure;key exposure;attribute-based encryption;provable security
Online Access:http://www.joconline.com.cn/thesisDetails#10.3969/j.issn.1000-436x.2014.07.005
Description
Summary:To mitigate the damage of key exposure in the context of ciphertext-policy attribute-based encryption (CP-ABE). The syntax and security model of forward-secure CP-ABE was presented. Then, a concreted forward-secure CP-ABE scheme was constructed. Under the l-BDHE assumption, the proposed scheme was proved secure in the stan-dard model. Furthermore, the performance of the proposed scheme was discussed in terms of security and efficiency. The results demonstrate that the proposed scheme strengthens the security of CP-ABE, without getting overmuch cost of computation and storage, and thus is more feasible for practical applications.
ISSN:1000-436X

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