Secure Data Retrieval Using Blockchain
Medical IoT devices are gradually being widely used, and acquisition requirements such as image type and quantity are also changing. Retrieving medical images can help diagnose the condition and improve treatment timeliness. However, medical images contain a large amount of sensitive patient information, which can easily cause privacy leakage. At the same time, existing research cannot protect the sensitive information of medical images or achieve data sharing. Therefore, it is of practical significance to study the realization of medical image data sharing and retrieval under privacy protection. This chapter proposes a medical image retrieval system based on emerging blockchain technology that can protect image privacy and give a system model and a threat model. Later, we not only capture specific feature vectors based on medical images but also design the transaction structure accordingly, so as to achieve the purpose of privacy protection.