Hash data structure used for file comparison,hash comparison system and method

A data and hashing technology, applied in the field of hashing, can solve problems such as time increase
CN102945241AInactive Publication Date: 2013-02-27NEOWIZ GAMES CO LTD
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Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
NEOWIZ GAMES CO LTD
Publication Date
2013-02-27
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention relates to a hash data structure used for file comparison, a hash comparison system and a method. The hash data comparison system according to the embodiment types can compare the source files by using the hash data comprising the file information and the hash value. The hash data comparison system comprises a file information generation unit, a hash generation unit, and a control unit. The file information generation unit examines the attribute of each of the source files, and generates the file information related to the source files. The hash generation unit can calculate the hash value by applying the hash function algorithm on at least a part of the source files. The control unit can generate the hash data by aiming at the corresponding source files, and the hash value comprises the file information and the hash value. Therefore the invention is advantageous in that all the hash values are not required to be compared in different files, and the files can be compared more quickly.
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Description

technical field

[0001] The present invention relates generally to hashing techniques for data files, and more particularly, to hashed data structures and hash comparison systems and methods utilizing the hashed data structures, which compare hash values ​​with unique characteristic information of source files together, so faster file comparisons. Background technique

[0002] Comparisons between multiple data, especially data files, have been used in various operations. For example, such file comparison has been substantially used in various operations to check changes between files in an operating system (OS) or to compare a patch file with a source file to execute a predetermined patch.

[0003] Conventional file comparison techniques that have been used include a method of comparing all files, a method of assigning version information to files and checking files based on the version information, a method of applying a hash function to files and then comparing files, and ...

Claims

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