%0 Journal Article
%A 狄曼
%A 何业锋
%A 李国庆
%A 刘继祥
%A 庞一博
%A 岳玉茹
%T New controlled quantum key agreement protocols based on Bell states
%D 2022
%R 10.19682/j.cnki.1005-8885.2022.2018
%J 中国邮电高校学报（英文）
%P 42-50
%V 29
%N 4
%X The controlled quantum key agreement (CQKA) protocol requires a controller to oversee the process of all participants negotiating a key, which can satisfy the needs of certain specific scenarios. Existing CQKA protocols are mostly two-party or three-party, and they do not entirely meet the actual needs. To address this problem, this paper proposes new CQKA protocols based on Bell states and Bell measurements. The new CQKA protocols can be successfully implemented for any N-party, not just two-party. Furthermore, the security and efficiency analyses demonstrate that the new CQKA protocols are not only secure but also more efficient in terms of quantum bit.<br>
%U https://jcupt.bupt.edu.cn/CN/10.19682/j.cnki.1005-8885.2022.2018