The recent advancements in unmanned aerial vehicles (UAVs) upsurges its usages in commercial and civilian applications such as surveillance, rescue, and crowdsensing. UAVs are vulnerable to being destroyed, lost, or stolen in case of security breaches of its network. The network management of UAVs is a crucial task due to its high mobility, which necessitates UAV network softwarization. Then, it becomes indispensable that allows the separation of control functions (i.e., control plane data) from hardware for smooth execution of complex operations. Further, UAV uses the Internet (an open channel) for communication in its complex system that raises a network security concern. The well-known softwarization techniques, i.e., software-defined networking (SDN) and network function virtualization (NFV) can be used to accomplish the secure network services on less expense. Conversely, these softwarization techniques may suffer from various threats like access control, user authentication, controller hijacking, and many more attack. The existing solutions are using a centralized system, which is having a single point of failure issue and vulnerable to security threats. Motivated from these facts, we present a comprehensive and systematic survey on the blockchain-based softwarization for a secure UAV network. Then, we propose a blockchain-enabled UAV softwarization architecture for secure communication and network management. It provides dynamic, flexible, and on-the-fly decision capabilities for communication services over the UAV network. Eventually, we analyzed the open research issues and challenges for future research directions in this emerging area.

无人机（UAV）的最新进展激增了其在商业和民用应用中的使用，例如监视，营救和人群感知。如果其网络存在安全漏洞，则无人机很容易被破坏，丢失或被盗。无人机的网络管理由于其高度的移动性而成为一项至关重要的任务，这就需要对无人机进行网络软化。然后，必不可少的是允许将控制功能（即控制平面数据）从硬件中分离出来，以便顺利执行复杂的操作。此外，无人机在其复杂的系统中使用Internet（开放信道）进行通信，这引起了网络安全问题。众所周知的软化技术，即 软件定义网络（SDN）和网络功能虚拟化（NFV）可用于以更少的费用完成安全的网络服务。相反，这些软化技术可能会遭受各种威胁，例如访问控制，用户身份验证，控制器劫持和更多攻击。现有解决方案使用的是集中式系统，该系统具有单点故障问题，并且容易受到安全威胁的影响。基于这些事实，我们针对安全的无人机网络对基于区块链的软化进行了全面，系统的调查。然后，我们提出了一种基于区块链的无人机软化架构，用于安全通信和网络管理。它为UAV网络上的通信服务提供了动态，灵活和即时的决策功能。最终，