Attacks against a Simplified Experimentally Feasible Semiquantum Key Distribution Protocol
A semiquantum key distribution (SQKD) protocol makes it possible for a quantum party and a classical party to generate a secret shared key. However, many existing SQKD protocols are not experimentally feasible in a secure way using current technology. An experimentally feasible SQKD protocol, “class...
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Veröffentlicht in: | Entropy (Basel, Switzerland) Switzerland), 2018-07, Vol.20 (7), p.536 |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | A semiquantum key distribution (SQKD) protocol makes it possible for a quantum party and a classical party to generate a secret shared key. However, many existing SQKD protocols are not experimentally feasible in a secure way using current technology. An experimentally feasible SQKD protocol, “classical Alice with a controllable mirror” (the “Mirror protocol”), has recently been presented and proved completely robust, but it is more complicated than other SQKD protocols. Here we prove a simpler variant of the Mirror protocol (the “simplified Mirror protocol”) to be completely non-robust by presenting two possible attacks against it. Our results show that the complexity of the Mirror protocol is at least partly necessary for achieving robustness. |
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ISSN: | 1099-4300 1099-4300 |
DOI: | 10.3390/e20070536 |