Attribute-Based Encryption Scheme Supporting Outsourcing and Revocation in Fog Computing

• Published in: Jisuanji gongcheng
• Main Author: HUANG Fengming, TU Shanshan, MENG Yuan
• Format: Article
• Language: English
• Published: Editorial Office of Computer Engineering 2020-05-01
• Subjects: fog computing|attribute-based encryption(abe)|encryption and decryption outsourcing|attribute revocation|attribute group key|ciphertext policy
• Online Access: https://www.ecice06.com/fileup/1000-3428/PDF/20200505.pdf

Fog computing extends the computing power and data analysis applications of cloud computing to the edge of the network,meeting the requirements of low latency and mobility of the Internet of Things(IoT) devices,but at the same time generating new data security and privacy protection problems.The Attribute-Based Encryption(ABE) technology in the traditional cloud computing is not suitable for the IoT devices with limited computing resources in the fog environment,and the attribute change is difficult to manage.Therefore,this paper proposes an ABE scheme that supports encryption and decryption outsourcing and revocation in fog computing.A three-layer system model of "cloud-fog-terminal" is constructed,and by introducing the technology of the attribute group key,the key is dynamically updated,thus the requirement of immediate cancellation of the attribute is satisfied.Some complicated encryption and decryption operations in the terminal device are outsourced to the fog node,which greatly improves the calculation efficiency.Experimental results show that the scheme has better computational efficiency and reliability than KeyGen and Enc schemes.