Dynamic Group Multi-party Quantum Key Agreement

Chou, Yao-Hsin; Zeng, Guo-Jyun; Chang, Zhe-Hua; Kuo, Shu-Yu

doi:10.1038/s41598-018-21658-6

Cited by 13 publications

(5 citation statements)

References 81 publications

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“…Although eavesdroppers can be detected in intercept-and-resend attacks, there is a possibility that they will use unitary operation to entangle a random particle on the decoy particles and measure the random particle in the Z -basis or the X -basis to steal the secret 39 , 40 . In the following, an eavesdropper performs unitary operation to entangle a particle on the decoy particles in states .…”

Section: Resultsmentioning

confidence: 99%

Multiparty weighted threshold quantum secret sharing based on the Chinese remainder theorem to share quantum information

Chou

Zeng

Chen

et al. 2021

Sci Rep

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Secret sharing is a widely-used security protocol and cryptographic primitive in which all people cooperate to restore encrypted information. The characteristics of a quantum field guarantee the security of information; therefore, many researchers are interested in quantum cryptography and quantum secret sharing (QSS) is an important research topic. However, most traditional QSS methods are complex and difficult to implement. In addition, most traditional QSS schemes share classical information, not quantum information which makes them inefficient to transfer and share information. In a weighted threshold QSS method, each participant has each own weight, but assigning weights usually costs multiple quantum states. Quantum state consumption will therefore increase with the weight. It is inefficient and difficult, and therefore not able to successfully build a suitable agreement. The proposed method is the first attempt to build multiparty weighted threshold QSS method using single quantum particles combine with the Chinese remainder theorem (CRT) and phase shift operation. The proposed scheme allows each participant has its own weight and the dealer can encode a quantum state with the phase shift operation. The dividing and recovery characteristics of CRT offer a simple approach to distribute partial keys. The reversibility of phase shift operation can encode and decode the secret. The proposed weighted threshold QSS scheme presents the security analysis of external attacks and internal attacks. Furthermore, the efficiency analysis shows that our method is more efficient, flexible, and simpler to implement than traditional methods.

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Section: Resultsmentioning

confidence: 99%

Multiparty weighted threshold quantum secret sharing based on the Chinese remainder theorem to share quantum information

Chou

Zeng

Chen

et al. 2021

Sci Rep

Self Cite

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“…By this means, the message receiver can confirm that the transmitter signed the message legitimately, while the attacker cannot identify the signature and cannot forge it, because QSDC secures the quantum channel. Similarly, if the particles of each entangled states are held by two different users [439] or even more than two users [440]- [442], then every one in the group has the right to modify a key by applying his/her operation to the qubits in hand and the final key is jointly determined by all members.…”

Section: The Cryptographic Applications Of Point-to-point Qsdc Protocolsmentioning

confidence: 99%

“…[439], [440] Three-party QSDC with GHZ states [66] [441], [442] of high-security communication. Thus QSDC is eminently suitable for a wide variety of quantum cryptographic tasks, which require a direct transport of deterministic information over the quantum channel.…”

Section: Two-step Quantum Key Agreementmentioning

confidence: 99%

The Evolution of Quantum Secure Direct Communication: On the Road to the Qinternet

Pan,

Long,

Yin

et al. 2024

IEEE Commun. Surv. Tutorials

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Communication security has to evolve to a higher plane in the face of the threat from the massive computing power of the emerging quantum computers. Quantum secure direct communication (QSDC) constitutes a promising branch of quantum communication, which is provably secure and overcomes the threat of quantum computing, whilst conveying secret messages directly via the quantum channel. In this survey, we highlight the motivation and the status of QSDC research with special emphasis on its theoretical basis and experimental verification. We will detail the associated point-to-point communication protocols and show how information is protected and transmitted. Finally, we discuss the open challenges as well as the future trends of QSDC networks, emphasizing again that QSDC is not a pure quantum key distribution (QKD) protocol, but a fully-fledged secure communication scheme.

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“…In 2010, Chong and Hwang [17] proposed a quantum group key distribution scheme based on BB84 in which the key is formed by consent of all participants. Recently, Chou et al [18] proposed a dynamic multi‐party group key distribution scheme which is able to achieve arbitrary number of groups and users under the same resources.…”

Section: Introductionmentioning

confidence: 99%