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Ciphertext Policy - Attribute Based Encryption (CPABE) has emerged as a feasible solution to address challenges of access control to a diverse set of users. In CP-ABE, owner encrypts its data under a policy of attributes, while any data consumer satisfying it can decrypt the data. Problem of existing CP-ABE schemes is that the access matrix is sent in plaintext along with the ciphertext. Hence, to...
The popularity of big data has resulted in the pro-liferation of applications and services with a lot of conveniences in social networks. Unfortunately, the diverse data sets contain users' privacy-sensitive information, which brings about privacy concerns potentially if the information is released or shared to the service provider. The existing practical techniques for big data privacy protection...
The roaming service enables mobile subscribers to access the internet service anytime and anywhere, which can fulfill the requirement of ubiquitous access for the emerging paradigm of networking, e.g., the Internet of Things (IoT). In this paper, we propose a conditional privacy-preserving authentication with access linkability (CPAL) for roaming service, to provide universal secure roaming service...
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