Information Encryption for Digital Libraries Using a Cloud–Fog Hybrid <scp>SD</scp>‐<scp>CFIIoT</scp> Architecture

ABSTRACT With the increasing improvement of Internet technology, more and more libraries use computer network technology to manage library information data. However, there are currently numerous technological means for information security, and a reasonable selection of scientifically effective network architecture can effectively improve information security and management efficiency. Therefore, the study attempts to combine cloud computing with fog computing and improve the traditional ant colony algorithm to construct a library information cloud–fog hybrid network architecture based on the improved industrial Internet of Things. The test results show that when the data transmission volume is 50 MB, the data transmission latency is 2.3 s. When the security constraint is 0.9, the data transmission latency of the cloud–fog hybrid network architecture is 5.9 s. When the number of library users is 1000, the total data transmission latency of the cloud–fog hybrid network architecture is 514 s. The experiment outcomes denote that the improved network architecture proposed by the research can effectively improve the efficiency of library information management, ensuring high security and low latency scientific management.