JOURNAL OF SHANDONG UNIVERSITY(NATURAL SCIENCE) ›› 2017, Vol. 52 ›› Issue (6): 64-68.doi: 10.6040/j.issn.1671-9352.2.2016.215

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Identity-based encryption in multiple PKG environment based on ring signature

LUO Peng1, YANG Xiao-yuan1,2   

  1. 1.Key Laboratory of Cryptology &
    Information Security of APF, Engineering University of APF, Xian 710086, Shaanxi, China;
    2. Research Institution of Information Security of APF, Engineering University of APF, Xian 710086, Shaanxi, China
  • Received:2016-08-16 Online:2017-06-20 Published:2017-06-21

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Abstract: Combining ring signatures with identity-based encryption, a new identity-based encryption with multiple private key generators was constructed, that is, scheme of multiple private key generators identity-based encryption based on ring signatures. Then a multiple private key generator identity-based encryption scheme on lattice based on ring signatures in the standard model was constructed, the security of the scheme was based on the difficulty of small integer solution problems and learning with errors on lattice. Compared with the existing scheme of identity-based encryption and its variation, the new scheme decreased the burdens of private key generator which more applicable to huge system and had higher application flexibility.

Key words: lattice, ring signature, Identity-based encryption

CLC Number: 

  • TP309
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