Journal on Communications ›› 2017, Vol. 38 ›› Issue (5): 157-164.doi: 10.11959/j.issn.1000-436x.2017109

• Papers • Previous Articles     Next Articles

Resplittable threshold multi-broker proxy re-encryption scheme from lattices

Ju-yan LI1,Chun-guang MA1,2(),Qian ZHAO1   

  1. 1 College of Computer Science and Technology,Harbin Engineering University,Harbin 150001,China
    2 State Key Laboratory of Information Security,Institute of Information Engineering,Chinese Academy of Sciences,Beijing 100093,China
  • Revised:2017-04-13 Online:2017-05-01 Published:2017-05-28
  • Supported by:
    The National Natural Science Foundation of China(61472097);The Special Research Found for the Doctoral Program of Higher Education of China(20132304110017);The Open Fund of the State Key Lab of Information Security(2016-MS-10)

Abstract:

Two different encryption schemes and Lagrange polynomial were used to construct a resplittable threshold multi-broker proxy re-encryption scheme on the lattice,namely the encryption in the ciphertext input and output side was different from the encryption in the re-encryption side which make the bound of noise was more relaxed.Threshold multi proxy not only ensure the safety of re-encryption key,but also ensure re-encryption scheme can still work even if the individual proxy could not provide normal services.The scheme is proven IND-UniRTPRE-CPA secure.

Key words: proxy re-encryption, threshold multi-proxy, learning with error, IND-UniRTPRE-CPA secure

CLC Number: 

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