Secured fog-based vehicular crowd-sensing protocol by Modified Attribute based Encryption Model

The contemporary fog computing paradigm evolved from traditional cloud computing to give storage and computation resources at the network’s edge. Fog enabled vehicular processing is anticipated to be a fundamental component that may expedite a variety of applications, notably crowd-sensing, when applied to vehicular networks. As a result, the confidentiality and safety of vehicles participating in the crowd-sensing platform are now recognized as critical challenges for smart police and cyber defence. Furthermore, sophisticated access control is essential to meet the requirements of crowd-sensing users of information. This work presents a novel secured fog-based protocol for vehicular crowd sensing utilizing an attribute-based encryption model. The proposed framework incorporates a two-layered fog architecture termed fog layer A and fog layer B. Fog layer A includes data owners (vehicles) and fog nodes, while fog layer B consists of fog nodes integrated with Road Side Units (RSUs). The Transport Triggered Architecture (TTA) governs the retrieval of regular or specialized data as per the request of data users. The data collection procedure varies based on the type of data being processed. Regular data is gathered from data owners, aggregated using the Multiple Kernel Induced in Kernel Least Mean Square (MKI-KLMS) technique, which employs kernel least mean square and hierarchical fractional bidirectional least mean square methods to handle redundancy in data aggregation. Subsequently, the aggregated data is encrypted using the Proposed Fusion Key for Encryption (PFKE) technique, which employs a fusion key for message encryption. Additionally, an enhanced Blowfish algorithm is applied for an extra layer of encryption on the already encrypted data. The encrypted data is then transmitted to the TTA. The decryption process utilizes the same key to retrieve the original message. The Modified Attribute based Encryption Model (MAEM) scheme achieves the highest efficiency of 90.9476.