Cloud computing is a disruptive technology that has transformed the way people access and utilize computing resources. Due to the diversity of services and complexity of environments, there is widespread interest in how to securely and efficiently authenticate users under the same domain. However, many traditional authentication methods involve untrusted third parties or overly centralized central authorities, which can compromise the security of the system. Therefore, it is crucial to establish secure authentication channels within trusted domains. In this context, we propose a secure and efficient authentication protocol, HIDA (Hyperledger Fabric Identity Authentication), for the cloud computing environment. Specifically, by introducing federated chain technology to securely isolate entities in the trust domain, and combining it with zero-knowledge proof technology, users’ data are further secured. In addition, Subsequent Access Management allows users to prove their identity by revealing only brief credentials, greatly improving the efficiency of access. To ensure the security of the protocol, we performed a formal semantic analysis and proved that it can effectively protect against various attacks. At the same time, we conducted ten simulations to prove that the protocol is efficient and reliable in practical applications. The research results in this paper can provide new ideas and technical support for identity authentication in a cloud environment and provide a useful reference for realizing the authentication problem in cloud computing application scenarios.

With the rapid development of 5 G communication technology, small military UAV swarms are increasingly used in reconnaissance, surveillance, and remote sensing fields. Authentication has become a critical factor in ensuring the safe and efficient operation of UAV swarms. Due to their complexity and limitations, traditional methods cannot meet the dynamic deployment and command authority switching requirements of UAV swarms in special wartime environments. Therefore, this study proposes a secure and efficient authentication scheme for UAV swarms based on the CVMerkle tree structure. The scheme integrates distributed digital ledger technology to optimize the authentication process between UAVs and the Airborne Command Center(ACC). This significantly reduces the communication and computational load while improving the security and reliability of authentication. Additionally, the scheme introduces the innovative concept of dynamic authorization in the ACC, which effectively eliminates security threats arising from internal corruption within the core organization. The results of the simulation experiment demonstrate that the scheme offers significant advantages in terms of security, efficiency, and storage requirements. Future research will focus on developing more efficient key management mechanisms and swarm-switching strategies to adapt to the complex and dynamic combat environment, further enhancing the combat effectiveness of UAV swarms.