Fuzzy matching and direct revocation: a new CP-ABE scheme from multilinear maps

Hao Wang, Debiao He, Jian Shen, Zhihua Zheng, Xiaoyan Yang, Man Ho Allen Au

Research output: Journal article publicationJournal articleAcademic researchpeer-review

17 Citations (Scopus)

Abstract

In the attribute-based encryption (ABE) systems, users could encrypt and decrypt messages based on some attributes or access policies. Due to the functionality and flexibility of ABE, it is considered to be very suitable for secure data sharing in cloud storage environment. However, in the real world, users’ access rights are often dynamic; therefore, we need ABE schemes to support revocation to meet this requirement. In this work, we construct a novel directly revocable ciphertext-policy ABE (DR-CP-ABE) scheme based on the multilinear maps and prove its selective security under (d+ 3) -multilinear decisional Diffie–Hellman assumption in the random oracle model. In addition, we extend our DR-CP-ABE scheme to support verifiable ciphertext delegation property.
Original languageEnglish
Pages (from-to)2267-2274
Number of pages8
JournalSoft Computing
Volume22
Issue number7
DOIs
Publication statusPublished - 1 Apr 2018

Keywords

  • CP-ABE
  • Directly revocable
  • Multilinear map
  • Random oracle
  • Verifiable ciphertext delegation

ASJC Scopus subject areas

  • Software
  • Theoretical Computer Science
  • Geometry and Topology

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