Open AccessA method to improve the BB84 protocol
Author(s) -
Liliana Zisu
Publication year - 2019
Publication title -
scientific bulletin
Language(s) - English
Resource type - Journals
eISSN - 2392-8956
pISSN - 1454-864X
DOI - 10.21279/1454-864x-19-i1-023
Subject(s) - bb84 , quantum key distribution , quantum cryptography , cryptography , encryption , computer science , cryptographic protocol , key (lock) , theoretical computer science , protocol (science) , key generation , quantum , computer engineering , computer security , quantum mechanics , physics , quantum information , medicine , alternative medicine , pathology
Quantum cryptography, the principles of which are based on classical mechanics laws, solves exceptionally the issue of key distribution in classical cryptography. BB84, the first quantum key distribution created by Charles Bennett and Gilles Brassard in 1984 offers unconditional security and allows the transmission of a key with the length equal to the length of the message. According to Vernom, using the key with the above feature once together with an encryption algorithm leads to the formation of a most secure cryptographic system. The paper presents a method for improving the BB84 quantum protocol, using ten states of polarization, quantum memory and direct communication in both directions. The implementation of both the proposed method and the BB84 protocol was done through a C# application.