Postquantum Cryptography, Part 2

Postquantum Steering.

The discovery of postquantum nonlocality, i.e., the existence of nonlocal correlations that are stronger than any quantum correlations but nevertheless consistent with the no-signaling principle, has deepened our understanding of the foundations of quantum theory. In this work, we investigate whether the phenomenon of Einstein-Podolsky-Rosen steering, a different form of quantum nonlocality, ca...

On the Postquantum Cipher Scheme

We discuss the general theoretical ideas of the possibility using cryptosystems based on the partial differential equations (PDE) and the role of inverse scattering problem for the cryptanalysis as the possible way to the postquantum cipher scheme. An application of the nonlinear Schrödinger equation and optical fibre technology in cryptology is presented.

Cryptography , Statistics and Pseudo - Randomness ( Part I )

In the classical approach to pseudo-random number generators, a generator is considered to perform well if its output sequences pass a battery of statistical tests that has become standard. In recent years, it has turned out that this approach is not satisfactory. Many generators have turned out to seriously bias the outcome of some simulation experiments in which they were put to use. From a t...

2 Public-key Cryptography

Secure transmission of private information is a crucial issue in today’s highly computerized world. Cryptographic algorithms are used to provide privacy of message transmission and to certify authenticity of sender and/or receiver of a message and message integrity as well as undeniability of transmitted messages (Menezes et al., 1996). The message that is sent by the sender is called the plain...

A Quantum Information Science and Technology Roadmap Part 2 : Quantum Cryptography