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arXiv quant-ph/0503157quant-phcs.CR
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使用量子比特的安全通信

Secure Communication Using Qubits

Saied Hosseini-Khayat, Iman Marvian

摘要:

提出了一种利用量子比特实现数据安全传输的两层量子协议。该协议是对BB84 QKD协议的改进。BB84与一次性密码本算法相结合,已被证明是无条件安全的。然而,它有两个缺点:(1)它的安全性依赖于假设爱丽丝的量子位源是完美的,在这个意义上,它不会无意中发出相同量子位的多个副本。如果违反这个假设,就可以发起多量子比特发射攻击。(2)BB84不能传输预定的密钥;它可以分发的密钥是在这个过程中生成的。我们的协议没有这些缺点。在BB84中,我们的协议需要一个经过认证的公共信道,以便检测入侵者与量子信道的交互,但不像在私钥加密,传输数据的机密性不依赖于共享的秘密密钥。

英文摘要:

A two-layer quantum protocol for secure transmission of data using qubits is presented. The protocol is an improvement over the BB84 QKD protocol. BB84, in conjunction with the one-time pad algorithm, has been shown to be unconditionally secure. However it suffers from two drawbacks: (1) Its security relies on the assumption that Alice's qubit source is perfect in the sense that it does not inadvertently emit multiple copies of the same qubit. A multi-qubit emission attack can be launched if this assumption is violated. (2) BB84 cannot transfer predetermined keys; the keys it can distribute are generated in the process. Our protocol does not have these drawbacks. As in BB84, our protocol requires an authenticated public channel so as to detect an intruder's interaction with the quantum channel, but unlike in symmetric-key cryptography, the confidentiality of transmitted data does not rely on a shared secret key.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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