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Improving security of quantum identity authentication based on ping-pong technique for photons | | Zhan-jun Zhang
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9 Jan 2007 | | Abstract: | Recently Z. S. Zhang et al [Phys. Lett. A 356(2006)199] have proposed an one-way quantum identity authentication scheme and claimed that it can verify the user’s identity and update securely the initial authentication key for reuse. In this paper we will show that, under an eavesdropper’s intercept-measure-resend attack, Zhang et al’s scheme is only a one-time-use scheme for the updated key can be eavesdropped. To fix this leak, we revise their protocol such that the authentication key can be securely updated for reuse. | | Source: | arXiv, quant-ph/0701045 | | Services: | Forum | Review | PDF | Favorites | |
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