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High Entropy Quantum Communication Framework for Secure Key Distribution and Secure Messaging

Authors:
Rohit De

Keywords: PKI; QKD; Deutsch-Jozsa; MITM; Qubit

Abstract:
This work explores quantum computing and quantum communication with a focus on cybersecurity. A high entropy quantum communication framework is set up for secure Quantum Key Distribution (QKD) and secure short messaging, based on the Deutsch-Jozsa (DJ) algorithm. QKD allows Alice and Bob to securely share a secret key and improves over the Public Key Infrastructure (PKI), which can become vulnerable as quantum computing matures. However, QKD itself can be compromised by sophisticated Man In The Middle (MITM) quantum attacks, such as intercept-resend and quantum cloning. Recent research on QKD improved the entropy by reordering the qubits within a DJ-packet and by hopping to a different size for each run of the DJ-algorithm. This paper further increases the entropy by additionally using multiple orthogonal bases for the different qubits in a DJ-packet, called the HRB (Hopping Reorder Basis) scheme. Furthermore, the HRB scheme does not require any pre-sharing to establish the protocol. Functionality of the HRB scheme is tested on Google’s Cirq quantum simulator. Simulations show that an attacker's interception success drops 200-times in the HRB scheme when using two orthogonal bases vs. 12-times in the previous work. When three orthogonal bases are used, the attacker's interception success drops more than 1000-times, improving the secrecy of the communication.

Pages: 6 to 11

Copyright: Copyright (c) IARIA, 2022

Publication date: June 26, 2022

Published in: conference

ISSN: 2308-3484

ISBN: 978-1-61208-961-4

Location: Porto, Portugal

Dates: from June 26, 2022 to June 30, 2022