Provably Secure Quantum Key Distribution By Applying Quantum Gate

V. Padmavathi ； B. Vishnu Vardhan ； A. V. N. Krishna

《International Journal of Network Security》 20卷1期 (2018/01) Pp. 88-94

https://doi.org/10.6633/IJNS.201801.20(1).10

摘要

The need for Quantum Key Distribution (QKD) is strengthening due to its inalienable principles of quantum mechanics. QKD commences when sender transforms bits into qubits or quantum states by applying photon polarization and sends to the receiver. The qubits are altered when measured in incorrect polarization and cannot be reproduced according to quantum mechanics principles. BB84 protocol is the primary QKD protocol announced in 1984. This paper introduces a new regime of secure QKD using Hadamard quantum gate named as PVK16 QKD protocol. Applying quantum gate to QKD makes tangle to the eavesdroppers to measure the qubits. For a given length of key, it is shown that the error rate is negligible. Also, the authentication procedure using digital certificates prior to QKD is being performed which confers assurance that the communicating entities are legitimate users. It is used as a defensive mechanism on man in the middle attack.

關鍵字

Authentication ； Quantum Cryptography ； Hadamard Gate ； QKD ； Qubits