Chinese Journal of Network and Information Security ›› 2017, Vol. 3 ›› Issue (5): 54-61.doi: 10.11959/j.issn.2096-109x.2017.00141

• Papers • Previous Articles     Next Articles

Group-oriented ciphertext-policy attribute-based encryption with expressive access policy

Yang LI1,2,Jiang-hua LIU1,2,Wei WU1,2   

  1. 1 School of Mathematics and Computer Science,Fujian Normal University,Fuzhou 350007,China
    2 Fujian Provincial Key Lab of Network Security and Cryptology,Fuzhou 350007,China
  • Revised:2016-12-22 Online:2017-05-01 Published:2017-05-13
  • Supported by:
    The National Natural Science Foundation of China(61402110);The National Natural Science Foundation of China(61472083);The Innovation Team Project of Fujian Normal University(IRTL1207)

Abstract:

Based on the study of the traditional attribute-based encryption,a scheme called group-oriented ciphertext-policy attribute-based encryption was proposed.In the scheme,the access policy consists of AND-gate and OR-gate.Users were split up into different groups.Users from the same group can merge their attributes to decrypt successfully,if the union of their attributes satisfies the access structure embedded in the ciphertext.But users from different groups cannot realize this cooperative decryption.A concrete construction and security model was given.Finally,the security proof for the proposed scheme was given.

Key words: attribute-based encryption, group-oriented, access policy, cooperative decryption

CLC Number: 

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