The drone's open and untrusted environment may create problems for authentication and data sharing. To address this issue, we propose a blockchain-enabled efficient and secure data sharing model for 5G flying drones. In this model, blockchain and attribute-based encryption (ABE) are applied to ensure the security of instruction issues and data sharing. The authentication mechanism in the model employs a smart contract for authentication and access control, public key cryptography for providing accounts and ensuring accounts' security, and a distributed ledger for security audit. In addition, to speed up out-sourced computations and reduce electricity consumption, an ABE model with parallel outsourced computation (ABEM-POC) is constructed, and a generic parallel computation method for ABE is proposed. The analysis of the experimental results shows that parallel computation significantly improves the speed of outsourced encryption and decryption compared to serial computation.

中文翻译：

---

5G飞行无人机的高效安全数据共享：基于区块链的方法

无人机的开放和不受信任的环境可能会为身份验证和数据共享带来问题。为了解决这个问题，我们为5G飞行无人机提出了一种基于区块链的高效，安全的数据共享模型。在此模型中，应用了区块链和基于属性的加密（ABE）以确保指令问题和数据共享的安全性。该模型中的身份验证机制使用智能合约进行身份验证和访问控制，使用公钥密码术提供帐户并确保帐户的安全，并使用分布式账本进行安全审核。此外，为了加快外包计算速度并减少用电量，构建了带有并行外包计算的ABE模型（ABEM-POC），并提出了一种通用的ABE并行计算方法。