Intelligent password key file storage method based on SKF standard

The invention discloses a smart key file storage method based on an SKF standard, and the method comprises the steps: dividing a NORFLASH space into a directory table, a file distribution table, a data region and a buffer region, and defining a file system mapping process from the directory table to the file distribution table and then to the data region, and for reading the application, the container and the file, firstly retrieving the position of the file distribution table from the directory table, then reading the file data of the data area according to the file distribution table, and when the file is written, adopting a linked list structure, sequentially setting the current distribution table to record the next distribution table address, finding the corresponding directory entry according to the file name, and writing the file into the data area. And obtaining a first chain number of the file distribution table, and performing data writing on a data address corresponding to the address of the file di