Proficient capability of QKD in Wi-Fi network system implementation
B K Sujatha, Sukhwant Raju, G. Srinivasa Rao · 2016
There are many types of ‘Mobile Wireless Networks’ (MWN) are existing. These Networks are Wi-Fi Mobile Wireless Networks which are built on the IEEE 802.11 standard. These Networks are ‘Wireless Local Area Networks (WLAN) which are utilized in various public and private places. In this kind of restricted ‘Network Coverage Area’ (NCA), IEEE 802.11 standard provided as ‘Building Oriented Environment’ (BOE), provides a way to implement Quantum Cryptography based ‘Quantum Key Distribution’ (QKD) Protocol which provides a secured communication. Security attacks are possible for this kind of Public & Private places. QKD is based on the Quantum Physical Laws that assures that it is impossible to measure the state of the photon which is arbitrarily polarized which carries the information without having the disturbances that can be received by the authentic receiver. Now we can use a new protocol with the help of QKD based 4-phase handshake process. In the BB84 protocol each photons carry only one bits. So to improve the efficiency in Efficient High Capacity Quantum Cryptography based Key Distribution in WI-FI Network each photons carry two bits. The channels used in the QKD are quantum channel and classical channel. The polarized photons are transmitted through the quantum channel and the classical channel deals with recovering identical secrete keys at both ends. The classical channel comprises of four stages, namely Sifting, Error Estimation, Reconciliation and Privacy Amplification. The ‘Quantum Bit Error Rate’ (QBER) is the measurement of the error probability in the key distributed via the quantum channel. This value allows the users to estimate the maximum amount of information that an eavesdropper could have on the key.