Towards revocable fine-grained encryption of cloud data: Reducing trust upon cloud

Yanjiang Yang, Joseph Liu, Zhuo Wei, Xinyi Huang

    Research output: Chapter in Book/Report/Conference proceedingConference PaperResearch

    4 Citations (Scopus)


    ABE (Attribute-based encryption) is capable of fine-grained data encryption, and thus has been studied for secure cloud data sharing. While a number of efforts have been dedicated to resolving the user revocation issue in the multi-user cloud data sharing setting, the trust assumption placed upon the cloud server is still high. In this work, we identify the necessity of achieving verifiability of cloud decryption in the proxy-assisted user revocation approach, so as to weaken the trust assumption on the cloud server. We further formulate a model for the system, and present two independent constructions following the formulation. Experimental results show the practicality of our proposed schemes.

    Original languageEnglish
    Title of host publicationInformation Security and Privacy
    Subtitle of host publication22nd Australasian Conference, ACISP 2017, Auckland, New Zealand, July 3–5, 2017, Proceedings, Part I
    EditorsJosef Pieprzyk, Suriadi Suriadi
    Place of PublicationCham, Switzerland
    Number of pages18
    ISBN (Electronic)9783319600550
    ISBN (Print)9783319600543
    Publication statusPublished - 2017
    EventAustralasian Conference on Information Security and Privacy 2017 - Massey University, Auckland, New Zealand
    Duration: 3 Jul 20175 Jul 2017
    Conference number: 22nd (Proceedings)

    Publication series

    NameLecture Notes in Computer Science
    ISSN (Print)0302-9743
    ISSN (Electronic)1611-3349


    ConferenceAustralasian Conference on Information Security and Privacy 2017
    Abbreviated titleACISP 2017
    Country/TerritoryNew Zealand
    OtherThe 22nd Australasian Conference on Information Security and Privacy (ACISP) will be held in Auckland New Zealand on 3-5 July 2017, organised by Massey University in collaboration with other New Zealand universities. ACISP has been running annually since 1996. Now in its 22nd year, is an established key forum for international researchers and industry experts to present and discuss the latest research, trends, breakthroughs, and challenges in the domain of information security and privacy.
    Internet address


    • ABE (Attribute-Based Encryption)
    • Authenticated encryption
    • Cloud computing
    • Fine-grained encryption
    • User revocation

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