Privacy-Preserving cloud-Aided broad learning system

Abstract Broad Learning System (BLS) is a new deep learning model proposed recently, which shows its effectiveness in many fields, such as image recognition and fault detection. In this paper, we propose a secure, efficient, and verifiable outsourcing algorithm for BLS. This algorithm enables resource constrained devices to outsource BLS algorithm to untrusted cloud server to complete model training, which is of great significance for the promotion and application of BLS algorithm. Compared with the original BLS algorithm, this algorithm not only improves the efficiency of the algorithm on the client, but also ensures that the sensitive information of the client will not be leaked to the cloud server. In addition, in our algorithm, the client can verify the correctness of returned results with a probability of almost 1. Finally, we analyze the security and efficiency of our algorithm in theory and prove our algorithms feasibility through experiments.