An efficient hybrid hash based privacy amplification algorithm for quantum key distribution

Quantum key distribution & Privacy Amplification

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

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 sy...

Using Hash-Based Signatures to Bootstrap Quantum Key Distribution

Quantum Key Distribution is a secret distribution technique that requires an authenticated channel. This channel is usually created on top of an un-authenticated communication medium using unconditionally secure Message Authentication Codes (MAC) and an initial common secret. We examine the consequences of replacing this MAC algorithm by a cryptographic hash-based signature algorithm, like the ...

Efficient Quantum Key Distribution

We devise a simple modification that essentially doubles the efficiency of a well-known quantum key distribution scheme proposed by Bennett and Brassard (BB84). Our scheme assigns significantly different probabilities for the different polarization bases during both transmission and reception to reduce the fraction of discarded data. The actual probabilities used in the scheme are announced in ...

An Efficient Hash-Based Algorithm for Sequence Data Searching

In real life, data collected day by day often appear in sequences and this type of data is called sequence data. The technique of searching for similar patterns among sequence data is very important in many applications. We first point out that there are some deficiencies in the existing definitions of sequence similarity. We then introduce a definition of sequence similarity based on the shape...