In unmanned aerial vehicle networks (UAVNs), unmanned aerial vehicles with restricted computing and communication capabilities can perform tasks in collaborative manner. However, communications in UAVN confront many security issues, for example, malicious entities may launch impersonate attacks. In UAVN, the command center (CMC) needs to perform mutual authentication with unmanned aerial vehicles in clusters. The aggregator (AGT) can verify the authenticity of authentication request from CMC; then, the attested authentication request is broadcasted to the reconnaissance unmanned aerial vehicle (UAV) in the same cluster. The authentication responses from UAVs can be verified and aggregated by AGT before being sent to CMC for validation. Also, existing solutions cannot resist malicious key generation center (KGC). To address these issues, this paper proposes a pairing-free authentication scheme (CLAS) for UAVNs based on the certificateless signature technology, which supports batch verification at both AGT and CMC sides so that the verification efficiency can be improved greatly. Security analysis shows that our CLAS scheme can guarantee the unforgeability for (attested) authentication request and (aggregate) responses in all phases. Performance analysis indicates that our CLAS scheme enjoys practical efficiency.

中文翻译：

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一种用于无人机网络的无证书免配对认证方案

在无人机网络（UAVNs）中，计算和通信能力受限的无人机可以协同执行任务。然而，UAVN 中的通信面临许多安全问题，例如，恶意实体可能会发起冒充攻击。在UAVN中，指挥中心（CMC）需要与成群的无人机进行相互认证。聚合器（AGT）可以验证来自CMC的认证请求的真实性；然后，经过证明的认证请求被广播到同一集群中的侦察无人机（UAV）。来自无人机的身份验证响应可以由 AGT 验证和聚合，然后发送到 CMC 进行验证。此外，现有解决方案无法抵抗恶意密钥生成中心（KGC）。为了解决这些问题，本文提出了一种基于无证书签名技术的无人机免配对认证方案（CLAS），该方案支持AGT和CMC双方的批量验证，从而大大提高了验证效率。安全性分析表明，我们的 CLAS 方案可以保证（已证明的）认证请求和（聚合）响应在所有阶段的不可伪造性。性能分析表明，我们的 CLAS 方案具有实用的效率。安全性分析表明，我们的 CLAS 方案可以保证（已证明的）认证请求和（聚合）响应在所有阶段的不可伪造性。性能分析表明，我们的 CLAS 方案具有实用的效率。安全性分析表明，我们的 CLAS 方案可以保证（已证明的）认证请求和（聚合）响应在所有阶段的不可伪造性。性能分析表明，我们的 CLAS 方案具有实用的效率。