Improved Functional Encryption Schemes by Using Novel Techniques

Abstract

Nowadays more and more people or enterprises prefer to outsource their data to the remote cloud servers. However how to efficiently and flexibly share the outsourced data storage secure is a very challenge problem, the cryptographic primitive of functional encryption is such a technique to solve this problem. In this paper, we show several new functional encryption schemes, which are more efficient than the original schemes, by using a novel technique. This technique maybe also has potential applications in other related schemes. Finally we conclude our paper with many interesting open problems.