Quantum Computation of Perfect Time-Eavesdropping in Position-Based Quantum Cryptography--Quantum Computing and Eavesdropping over Perfect Key Distribution

摘要

In this paper, we proposed the Implementation of Perfect Time Eavesdropping in Position Based Quantum Cryptography. The Security of Quantum Key Distribution lies in the Laws of Quantum Mechanics and is recognized to be one of the most secure cryptography ever known. The major advantage of Position-Based Key Distribution is that an authenticated server or device will be able to use its InterSpace Positions while authenticating in an environment while exchanging a secure key for communication over the network. In Position Cryptography the Authentication is done by verifying that a particular Device holds a definite and fixed position in Space-Time. In this paper, we proposed the experimental Time-Based Attack which evolved as modern day Decoy-Fake Shift Attack. The key idea is: an Attacker Eve can change the Shift of the Key randomly to T1 or T2 with the probability of shift, F and G= 1-F respectively. Also, the attacker can Authenticate and Randomize the Probability F in such a way so that it ensures the Receiver's Detection Ratio is constant i.e. 1:1. So, as a result, the two parties communicating via a secure Quantum channel will not be able to detect the Eavesdropping caused by the attacker and therefore the attacker can have an Authentication over the shared key and can, therefore, the parties will not be able to conceal its information. Thus the secure Position Quantum Cryptography can be broken by this proposed Architecture model. In this paper, we represented the Architecture Model experimentally and the Security Analysis for such an attack has been proposed.