A method, device, equipment and medium for managing the entire life cycle of information data

Abstract

The present invention relates to a method, device, equipment and medium for the full life cycle management of information data, belonging to the field of information management. The method includes inputting information data and obtaining a sub-database; encrypting the sub-database through a database key; the user accesses the sub-database through the database key after real-name authentication, the terminal obtains watermark data in real time, and generates a binary image original watermark through the watermark data; based on the improved matrix transformation, the binary image original watermark is processed and a scrambled watermark is obtained, and the user downloads the information data carrying the scrambled watermark; a low access cycle is preset, the user's comprehensive similarity is obtained, and the low access data is matched according to the user's comprehensive similarity and pushed to the user end. The present invention realizes hierarchical encryption protection of different data and tracks and traces the suspected leaked data through scrambled watermarks, and at the same time matches the data that has not been accessed for a long time for the user according to the similarity between users to prevent the data from being buried.