File packing and reading method based on Hash

Abstract

The invention discloses a file packing and reading method based on Hash. The packing method comprises the steps as follows: reading files required to be packed in sequence; calculating the Hash values of the paths of the files; writing the files into a file data region; writing the Hash values and the offset values of the files into a Hash table; and finishing the writing operation of all the files. The reading method comprises the steps as follows: obtaining the Hash values of the paths of the files in the packs through read-in file index information; searching the corresponding offset values in the Hash table; and reading data files corresponding to the offset values in the file data region. According to the file packing and reading method, the identifications of the files in the packs adopt the Hash values and the string matching operation does not need to be performed in the search process; the indexes adopt the Hash table, so that the offset addresses can be quickly positioned; and the original directory structure cannot be recovered through the files in the packs. The file packing and reading method can be widely applied to the field of computer software.

Description

technical field [0001] The invention relates to a file packaging and reading method, in particular to a hash-based file packaging and reading method. Background technique [0002] Existing software client resources are usually stored in a packaged manner, so as to obtain advantages such as convenient transmission, resource confidentiality, and faster access speed. In the packaging process, due to the use of traditional index methods such as binary or B+ trees, the indexing speed still needs to be improved; at the same time, because the traditional package file uses the file path name as the unique identifier of the file in the package, it is necessary to perform string The one-by-one comparison of characters in is relatively time-consuming. During the reading process, since the index information in the package file stores the path information of the files in the package, malicious users can use this information to completely restore the directory structure of the file befor...

AI Technical Summary

Problems solved by technology

In the packaging process, due to the use of traditional index methods such as binary or B+ trees, the indexing speed still needs to be improved; at the same time, because the traditional package file uses the file path name as the unique identifier of the file in the package, it is necessary to perform string The one-by-one comparison of characters in is relatively time-consuming

During the reading process, since the index information in the package file stores the path information of the files in the package, malicious users can use this information to completely restore the directory structure of the file before packaging, which brings security risks to software products

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