论文标题
安全多党量子密钥协议，以防止犯罪攻击
Secure multiparty quantum key agreement against collusive attacks
论文作者
论文摘要
Quantum密钥协议使远程参与者能够根据其私人输入公平建立一个安全的共享密钥。在循环型多党量子密钥协议模式下，两个或多个恶意参与者可以勾结在一起，以窃取诚实参与者的私人意见或单独生成最终密钥。在这项工作中，我们专注于一种强大的辅助攻击策略，其中两个或多个恶意参与者可以在特定位置上学习敏感信息或单独生成最终钥匙而不会揭示其恶意行为。当前许多循环型量子量子关键协议协议协议没有针对这种犯罪攻击策略的安全。例如，我们分析了最近提出的多方密钥协议协议的安全性，以显示现有的循环型多方量子量子密钥协议协议针对这一犯罪攻击的脆弱性。此外，我们设计了一个通用安全的多方密钥协议模型，该模型将从这种循环类型的密钥协议协议中消除此漏洞，并描述实现此模型的必要步骤。提出的模型是一般的，不取决于量子密钥协议的特定物理实施。
Quantum key agreement enables remote participants to fairly establish a secure shared key based on their private inputs. In the circular-type multiparty quantum key agreement mode, two or more malicious participants can collude together to steal private inputs of honest participants or to generate the final key alone. In this work, we focus on a powerful collusive attack strategy in which two or more malicious participants in particular positions, can learn sensitive information or generate the final key alone without revealing their malicious behaviour. Many of the current circular-type multiparty quantum key agreement protocols are not secure against this collusive attack strategy. As an example, we analyze the security of a recently proposed multiparty key agreement protocol to show the vulnerability of existing circular-type multiparty quantum key agreement protocols against this collusive attack. Moreover, we design a general secure multiparty key agreement model that would remove this vulnerability from such circular-type key agreement protocols and describe the necessary steps to implement this model. The proposed model is general and does not depend on the specific physical implementation of the quantum key agreement.
