Network Security Based on Quantum Cryptography & Multi-qubit Hadamard Matrices
An approach is described for generating a secret key using polarized photons in quantum systems. A message is encoded and decoded by using code generated through the properties of Hadamard matrices. The algorithm uses the features of certain existing algorithms and makes the transmission of data through an insecure channel less vulnerable to various attacks. The algorithm uses the concept of bases: rectilinear and diagonal for the sender and the receiver respectively [1]. This is a deterministic algorithm in which the two communicating parties use the same orthogonal bases to measure each qubit in the transmitted message. The algorithm uses the concept described by Lester-Hill [2] in the intermediate steps of the cryptographic process. The key that is transmitted over the network is made less vulnerable to the man-in-the-middle attack using the Diffie-Hellman concept of key exchange [3].
