A Quantum Key Distribution Protocol Based on Challenge-Response Mechanism

Abstract

Abstract:

A quantum key distribution protocol based on BB84 protocol and a challenge-response mechanism is proposed. Through a secure channel, Alice and Bob have pre-shared three different Hash functions (denoted by , and ) and a random bit string . Every time, Alice first generates two random bit strings (challenge) and (key), then prepares a photon sequence based on BB84 protocol using , , and . Alice sends and to Bob and Bob receives the corresponding and . Bob measures according to BB84 protocol and gets corresponding . In the ideal case, should be the same as . Bob uses , , and to generate (response). At last, Alice and Bob use their own sequences and to generate and respectively, then they update their own . In our protocol, the utilization rate of photons is 100. The security of the protocol is similar as that of the BB84 protocol. Furthermore, it is a one-way identification authentication protocol.

Key words: quantum optics, quantum key distribution protocol, challenge-response mechanism, BB84 protocol, utilization rate of photons, identification authentication

CLC Number:

O431.2

WANG Hai-hong, ZHAO Sheng-mei, GONG Long-yan. A Quantum Key Distribution Protocol Based on Challenge-Response Mechanism[J]. J4, 2015, 32(4): 452-458.

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