Lattice Based Cryptography : Its Applications, Areas of Interest & Future Scope

With a recent increase in the advancement of the technology, computer system and it’s sensitive data are getting exhibited to unauthorised users, with steadily corroding the fundamentals of computer security. This, in fact, demanded fundamental innovations that require several cryptographic paradigms and security protocol. Previously it was thought that asymmetric cryptographic key like RSA, Diffie-Hellman, are very hard to decrypt by classical computation, but with the implementation of quantum computation, it is proved that this kind of cryptographic algorithm is very easy to decrypt and hackers can steal important Data [3], [6]. After the release of Ajtai’s research paper " Generating Hard Instances of Lattice Problem" [2], a million reasons arose in the minds of the researchers to develop on methods based on lattice-based cryptography to improve their security needs. Firstly, it provided much stronger security, and the average-case of several problems in lattice-based cryptography seems equivalent to the worst-case problem of these problems [2]. Moreover, lattices have the potential to persuade the cryptanalytic attacks created by any quantum computers i.e Quantum Computational Secure [3]. In this paper, we will discuss lattice-based cryptosystem, it’s security dimensions, a general brief on how it works, future scope, applications and areas of Interest.