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Applied Physics B

Impersonation attack on a quantum secure direct communication and authentication protocol with improvement

Ali Amerimehr, Massoud Hadian Dehkordi

Published Feb 14, 2018• 4 citations
Publisher
DOI
10.1007/s00340-018-6907-z

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Abstract Recently, Yan et al . proposed a quantum secure direct communication (QSDC) protocol with authentication using single photons and Einstein-Podolsky-Rosen (EPR) pairs ( Yan L. et al ., Comput. Mater. Contin. , 63 (2020) 1297). In this work, we show that the above QSDC protocol is secure neither against intercept-and-resend attack, nor against impersonation attack. With any of these two types of attacks, an eavesdropper can recover the full secret message. We also propose a suitable modification of this protocol, which not only defeats the above attacks, but also resists all other common attacks. Thus, our modified protocol provides an improvement over the existing one in terms of security.
In this paper, a novel authenticated quantum secure direct communication scheme with three-dimension single photons is presented, where the message is encoded on batches of qutrits, and identity is mutual authenticated with their shared seed key. Security analysis shows that this scheme can efficiently resist Eve's attacks and the impersonator's attacks. Comparing with those protocols using entangled state, the presented scheme is more practical and economic within the present technology.