Empowering personal health records with cloud computing: How to encrypt with forthcoming fine-grained policies efficiently

Clémentine Gritti*, Willy Susilo, Thomas Plantard, Kaitai Liang, Duncan S. Wong

*Corresponding author for this work

    Research output: Contribution to journalArticleScientificpeer-review

    6 Citations (Scopus)


    The issue of empowering patients to be well informed with regards to their health records has been well accepted in the community, which is known as the Personal Health Record (PHR). PHR has been believed as the solution for better management of an individual’s health, and as the tool that will empower the patient in correlation with healthcare providers through the ability to provide his/her own medical history. In this work, we aim to take one step further by equipping patients with the ability to “control” the access to their PHR efficiently and easily, by incorporating the emerging cloud technology. Specifically, we aim to provide the patients with the luxury of using the power of the cloud to conduct the outsourced work efficiently. To realize this, we present the notion of online/offline ciphertext-policy attribute-based proxy re-encryption scheme, which is very useful primitive in empowering personal health records in cloud computing. We present such a notion as well as a set of security requirements. More specifically, we define two security models covering both outsider and insider attacks. Furthermore, we present a concrete construction of such a scheme, and prove that it is secure under the well known complexity assumptions and following our security models.

    Original languageEnglish
    Pages (from-to)3-28
    Number of pages26
    JournalJournal of Wireless Mobile Networks, Ubiquitous Computing and Dependable Applications
    Issue number4
    Publication statusPublished - 1 Dec 2014
    MoE publication typeA1 Journal article-refereed


    • CCA security
    • Ciphertext-policy attribute-based encryption
    • Online/Offline encryption
    • Proxy re-encryption


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