Checking system, checking method and compiling method of system start-up file

A checking method of a system start-up file, comprising:

• acquiring the system start-up file and a mapping table from the system firmware partition;
• reading first check data and addressing data associated with the first check data from the mapping table;
• reading segmentation data corresponding to the first check data from the system start-up file, according to the addressing data;
• determining whether the first check data is a first type or a second type;
• determining whether the segmentation data is a repeated permutation of the first check data when the first check data is the first type, and when the segmentation data is not the repeated permutation of the first check data a security error exists in the system start-up file;
• and
• determining whether second check data, acquired through calculating the segmentation data according to a check algorithm, is consistent with the first check data when the first check data is the second type, and when the second check data is inconsistent with the first check data a security error exists in the system start-up file.

A compiling method of a system start-up file, comprising:

• acquiring the system start-up file;
• determining whether the system start-up file includes first segmentation data formed by a repeated permutation of bytes or byte combinations;
• when the first segmentation data exists, associating the bytes or byte combination, regarded as check data, with addressing data of the first segmentation data and storing the check data in a mapping table;
• determining second segmentation data other than the first segmentation data;
• associating check data obtained by the second segmentation data through a check algorithm, with addressing data of the second segmentation data, and storing the check data in the mapping table;
• and
• storing the mapping table together with the system start-up file into a preset system firmware partition.