Twin-field-based multi-party quantum key agreementQuantum Key Agreement • September 9th, 2024
Multiparty Quantum Key AgreementQuantum Key Agreement • September 13th, 2018
Abstract—Quantum Key Agreement (QKA) signifies that two or more participants together generate a key and QKA has to satisfy the following conditions: 1 Every participant can change the key and the key is not decided by any participant individually. 2 Only participants can know the key; nonparticipants cannot get the key through illegal means. Because of the condition 1 of par- ticipating together, it makes transport inefficient in the current mainstream protocols. They use unicast to exchange messages one by one, so it will considerably limit transmission efficiency and increase cost time spent. This study proposes a protocol based on Multiparty Quantum Secret Direct Communication (MQSDC) with multicast. In addition to satisfying the above conditions, it uses multicast to not only achieve the effect and purpose of QKA, but also to defend against internal and external attacks at the same time. In regard to resource consumption, this study involves linear growth and is more efficient tha
Quantum Key Agreement in a Classical WorldQuantum Key Agreement • June 25th, 2010
Quantum key distribution (QKD) promises secure key agreement by using quantum mechanical systems. Assuming practical and affordable QKD systems become widely available, what role will QKD play in future cryptographic infrastructures?
