A traceable threshold attribute-based signcryption for mHealthcare social network Online publication date: Tue, 05-Dec-2017
by Yanfei Lu; Xu Wang; Chunqiang Hu; Hui Li; Yan Huo
International Journal of Sensor Networks (IJSNET), Vol. 26, No. 1, 2018
Abstract: With the rapid development of wireless sensor technologies, mobile healthcare social network (MHSN) built upon wireless body sensor network (WBSN), has evolved into an innovative next-generation healthcare system in our aging society. Nevertheless, it is vital to focus on the security issues and the tradeoff between privacy preserving and traceability. A novel security mechanism named as the traceable threshold attribute-based signcryption (TTABSC) can permits patients to be friends and make a proper tradeoff between privacy and traceability. The proposed scheme leverages a four-party model to prevent the leak of a patient's sensitive information, including symptom information, identity and patient's health information (PHI). Combining the digital signatures and encryption, we provide a series of performance analysis, including correctness, unforgeability, traceability and privacy. Compared with previous works, our most efficient scheme generates a constant signcryption size.
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