Quantum Hash function and its application to privacy amplification in quantum key distribution, pseudo-random number generation and image encryption.

ABSTRACT: Quantum information and quantum computation have achieved a huge success during the last years. In this paper, we investigate the capability of quantum Hash function, which can be constructed by subtly modifying quantum walks, a famous quantum computation model. It is found that quantum Hash function can act as a hash function for the privacy amplification process of quantum key distribution systems with higher security. As a byproduct, quantum Hash function can also be used for pseudo-random number generation due to its inherent chaotic dynamics. Further we discuss the application of quantum Hash function to image encryption and propose a novel image encryption algorithm. Numerical simulations and performance comparisons show that quantum Hash function is eligible for privacy amplificatio

SUBMITTER: Yang YG 

PROVIDER: S-EPMC4731770 | biostudies-literature | 2016 Jan

REPOSITORIES: biostudies-literature