Abstract
The key formation is a crucial primitive for constructing secure networks: in a multi- party setting, it permits two parties using public authenticated communication to create a secret session key, which used to encrypt messages. QKD is an innovative technology that exploits the laws of quantum mechanics to generate and distribute unconditionally secure shared key for use in cryptographic applications. Currently, many symmetric key cryptographic tools, which are known to be quantum-safe. They all share secret symmetric keys, through untrusted communication, which finished with public-key systems, which are prone to quantum attacks. One of the recommended solutions to the key distribution problem is Quantum Key Distribution (QKD). QKD can be used to generate secret keys that are secure against any future algorithmic / computational improvements. QKD utilizes an authenticated communication channel along with a quantum communication channel so that a secret key generated. Whatever may be the protocol to implement proposed QKD, they all need both a quantum channel and an authenticated classical. OTP (One Time Pad) is a randomly generated key. Therefore, this key length is equal to the message. The proposed QKD result is 35.67% smaller keys for quantum security. The performance of a QKD system against a modeled photon number splitting attack analysed in simulation results and standard key agreement protocols can be secure.