dorsal/arxiv
View SchemaReply to comment on Y-00 quantum secure communication protocol
| Authors | Osamu Hirota |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0312029 |
| URL | https://arxiv.org/abs/quant-ph/0312029 |
Abstract
In 2000, an attractive new quantum cryptography was discovered by H.P.Yuen, which can realize secure communication with high speeds and at long distance by conventional optical devices. Recently, a criticism of the Yuen protocol, so called Y-00, was made by Nishioka, and Imai group(Mitsubishi and University of Tokyo), and they claimed Y-00 is essentially a classical stream cipher. This paper shows that the claim is incorrect. In particular, it is shown that the relation $l_i=r_i\oplus \tilde{k}_i$, which is their basis for attack, has no essential role for any security analysis. In addition, we give a brief introduction of the general logic for the security of Y-00 as direct encryption and also for key generation. Several industries have started to make a test-bed of Y-00 for digital optical fiber highway, following Kumar's leading work. We hope that this discussion encourages experimental works which realize a secure communication against quantum computer and quantum attacks based on physical principle.
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"abstract": "In 2000, an attractive new quantum cryptography was discovered by H.P.Yuen,\nwhich can realize secure communication with high speeds and at long distance by\nconventional optical devices. Recently, a criticism of the Yuen protocol, so\ncalled Y-00, was made by Nishioka, and Imai group(Mitsubishi and University of\nTokyo), and they claimed Y-00 is essentially a classical stream cipher. This\npaper shows that the claim is incorrect. In particular, it is shown that the\nrelation $l_i=r_i\\oplus \\tilde{k}_i$, which is their basis for attack, has no\nessential role for any security analysis. In addition, we give a brief\nintroduction of the general logic for the security of Y-00 as direct encryption\nand also for key generation.\n Several industries have started to make a test-bed of Y-00 for digital\noptical fiber highway, following Kumar\u0027s leading work. We hope that this\ndiscussion encourages experimental works which realize a secure communication\nagainst quantum computer and quantum attacks based on physical principle.",
"arxiv_id": "quant-ph/0312029",
"authors": [
"Osamu Hirota"
],
"categories": [
"quant-ph"
],
"title": "Reply to comment on Y-00 quantum secure communication protocol",
"url": "https://arxiv.org/abs/quant-ph/0312029"
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