The proposed study was primarily concerned with the creation of a lightweight data security model for an IoT data transmission-based application for data transmission and storage in smart cities. The suggested security model's primary contribution is the development of a unique hashing algorithm based on the distinctive pattern of the previous sequential change in value. The Delta Probabilistic Hashing (DPH) based architecture of key extraction technique for data security may do this. Based on the hash key signature approach, this kind of safe data handling procedure provides a random key for data encryption, which may simplify the model and speed up the algorithm's operation. The size of the architecture can be reduced by reducing the number of iterations. This value is the retrieved bit size from the encrypted data. To verify the improvement in our technique, the suggested work is compared to other existing research techniques.

Data security, Hashing algorithm, Key generation, Lightweight security