Quantum Key Distribution for Secure Communications

Data protection and information security have been the essence of communication in today's digital era. Authentication secrecy secure are achieved using key-based cryptographic primitives; which significantly relies upon underlying computationally complex mathematics. Moreover, these existing primitives considered to be non-deterministic on basis computational capabilities. However, considerable advancements development quantum computers enhanced parallel computations; thereby, posing a great threat encryption primitives. Thus, future, physical manifestation large successful computer is likely break all public-key algorithms no time. This has led remarkable surge interest propelling mechanics into existence; subsequently, leading cryptographers research various viable domains offer quantum-resistant communications. Resultantly, cryptography/quantum key distribution emerged as futuristic replacement for classical cryptography it offers unconditionally along with inherent detection any unintended user. keeping view significance this relatively newer domain cryptography, focuses presenting consolidated review Quantum Key Distribution (QKD) protocols. A comparative analysis working mechanism prominent QKD protocols presented an overview emerging trends that proposed optimize implementational efficiency BB84 protocol.