Elliptic Curve (EC) is the most recent and advanced technique of Elliptic Curve
Cryptography (ECC). EC is often used to improve the security of open communication …

Blockchain, an emerging paradigm of secure and shareable computing, is a systematic
integration of 1) chain structure for data verification and storage, 2) distributed consensus …

With the advent of cloud computing, data owners are motivated to outsource their complex
data management systems from local sites to the commercial public cloud for great flexibility …

We initiate the formal study of functional encryption by giving precise definitions of the
concept and its security. Roughly speaking, functional encryption supports restricted secret …

Abstract We propose a Multi-Authority Attribute-Based Encryption (ABE) system. In our
system, any party can become an authority and there is no requirement for any global …

Privacy and data protection constitute core values of individuals and of democratic societies.
There have been decades of debate on how those values-and legal obligations-can be …

We survey the notion of provably secure searchable encryption (SE) by giving a complete
and comprehensive overview of the two main SE techniques: searchable symmetric …

We introduce a new lattice-based cryptographic structure called a bonsai tree, and use it to
resolve some important open problems in the area. Applications of bonsai trees include an …

Storing and sharing of medical data in the cloud environment, where computing resources
including storage is provided by a third party service provider, raise serious concern of …

Predicate encryption is a new paradigm generalizing, among other things, identity-based
encryption. In a predicate encryption scheme, secret keys correspond to predicates and …