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Several advanced features exist in fifth-generation (5G) correspondence than in fourth-generation (4G) correspondence. Centric cloud-computing architecture achieves resource sharing and effectively handles big data explosion. For data security problems, researchers had developed many methods to protect data against cyber-attacks. Only a few solutions are based on blockchain (BC), but are affected by expensive storage costs, network latency, confidence, and capacity. Things are represented in digital form in the virtual cyberspace which is the major responsibility of the communication model based on cybertwin. A novel cybertwin-based UAV 6G network architecture is proposed with new concepts such as cloud operators and cybertwin in UAV. Here, IoE applications have to be energy aware and provide scalability with less latency. A novel Compute first networking (CFN) framework named secure blockchain-based UAV communication (BC-UAV) is designed which offers network services such as computing, caching, and communication resources. The focus of the blockchain was to improve the security in the cloud using hashing technique. Edge clouds support core clouds to quickly respond to user requests.

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Now a day"s cloud computing is the changing way to store, compute and use the data and resources which are stored on the remote servers due its properties such as it provides on demand self-service, robustness, broad network access, measured resources and low cost. But data security is a major issue that prevents users from storing files on the cloud. Every day enormous amount of data is generated in multi-specialist hospitals. This article presents various techniques to protect electronic medical reports (EMR) stored on cloud. If doctors of various specialization want to go through the reports it will be easy for them if those are placed on the cloud. This will also help patient in not carrying the prescriptions or big size reports. This article addresses these issues by proposing Visual Cryptography Scheme (VCS) and multi secret sharing for securing the multiple EMR. In order to prevent issues like breaches and malware attacks on cloud, this innovative scheme helps in high level security to safeguard the files or reports that are stored on the cloud.