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DEStech Transactions on Engineering and Technology Research

Quantum Secure Communication Protocol with Signature

Junluo Wen, Zheng Xing

Published Jun 26, 2017• 0 citations
Publisher

Abstract

Combining the idea of quantum secure communication and quantum homomorphic signature, we propose a quantum secure communication protocol with signature via EPR pairs, in which the identities of the sender and the recipient could be certified and the integrity of the message transmitted is guaranteed according to their signatures. Comparing with the previous quantum secure communication scheme without signature, our protocol is not only feasible in practice but also can effectively guarantee the reliability and security of the quantum communication. The security of the protocol is analyzed.

DOI
10.12783/dtetr/apetc2017/10919

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Combining the idea of quantum secure communication and quantum homomorphic signature, we propose a quantum secure communication protocol with signature via EPR pairs, in which the identities of the sender and the recipient could be certified and the integrity of the message transmitted is guaranteed according to their signatures. Comparing with the previous quantum secure communication scheme without signature, our protocol is not only feasible in practice but also can effectively guarantee the reliability and security of the quantum communication. The security of the protocol is analyzed.
Two quantum digital signature schemes using the entanglement character of Einstein-Podolsky-Rosen(EPR) pairs were researched,and a protocol based on comparing the measurement result and the other protocol based on teleportation were proposed.In the first protocol,the communicators measured their EPR and compared the measurement results with the message M to implement signature and verification,in the meantime using quantum one-way function to guarantee its security.In the second protocol,the sender sent M to the receiver via quantum teleportation to implement signature and verification,whose security was guaranteed by the physical characteristics of quantum teleportation.These two protocols did not need a third party who was worthy of being trusted,neither need any keys in the communication process.Furthermore,they had unconditional security.
We present a quantum secure direct communication scheme achieved by swapping quantum entanglement. In this scheme a set of ordered Einstein-Podolsky-Rosen (EPR) pairs is used as a quantum information channel for sending secret messages directly. After insuring the safety of the quantum channel, the sender Alice encodes the secret messages directly by applying a series local operations on her particle sequences according to their stipulation. Using three EPR pairs, three bits of secret classical information can be faithfully transmitted from Alice to remote Bob without revealing any information to a potential eavesdropper. By both Alice and Bob's GHZ state measurement results, Bob is able to read out the encoded secret messages directly. The protocol is completely secure if perfect quantum channel is used, because there is not a transmission of the qubits carrying the secret message between Alice and Bob in the public channel.
Most of quantum secure direct communication protocols need a pre-established secure quantum channel. Only after insuring the security of quantum channel, could the sender encode the secret message and send them to the receiver through the secure channel. In this paper, we present a quantum secure direct communication protocol using Einstein-Podolsky-Rosen pairs without insuring the security of quantum channel before transmitting the secret message. Compared with the protocol proposed by Deng et al. [Phys. Rev. A 68, 042317 (2003)] and the scheme proposed by Yan et al. [Euro. Phys. J. B 41, 75 (2004)], the present protocol provides higher efficiency.
Most of the quantum secure direct communication protocol needs a pre-established secure quantum channel. Only after insuring the security of quantum channel, could the sender encode the secret message and send them to the receiver through the secure channel. In this paper, we present a quantum secure direct communication protocol using Einstein-Podolsky-Rosen pairs without insuring the security of quantum channel before transmitting the secret message. Compared with the protocol proposed by Deng et al. [Phys. Rev. A68, 042317 (2003)] and the scheme proposed by Yan et al. [ Euro. Phys. J. B41, 75 (2004)], the present protocol provides higher efficiency.
We present a quantum secure direct communication scheme achieved by swapping quantum entanglement. In this scheme a set of ordered Einstein-Podolsky-Rosen (EPR) pairs is used as a quantum information channel for sending secret messages directly. After insuring the safety of the quantum channel, the sender Alice encodes the secret messages directly by applying a series local operations on her particles sequence according to their stipulation. Using three EPR pairs, three bits of secret classical information can be faithfully transmitted from Alice to remote Bob without revealing any information to a potential eavesdropper. By both Alice and Bob's GHZ state measurement results, Bob is able to read out the encoded secret messages directly. The protocol is completely secure if perfect quantum channel is used, because there is not a transmission of the qubits carrying the secret message between Alice and Bob in the public channel.