Method for storing massive MD5 feature codes

A feature code and MD5 technology, which is applied in the storage field of massive MD5 feature codes, can solve the problems of time-consuming, unfavorable rapid matching of massive data, etc., and achieve the effect of improving efficiency.

Pending Publication Date: 2022-04-12
BEIJING KINGSOFT SECURITY MANAGEMENT SYST TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1) In the process of storing hundreds of millions of signatures, a large amount of system memory will be used, which brings many restrictions to the promotion and use of this technology;
[0004] 2) The calculation method of character string matching takes a long time in the computer, which is not conducive to fast matching of massive data

Method used

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  • Method for storing massive MD5 feature codes
  • Method for storing massive MD5 feature codes
  • Method for storing massive MD5 feature codes

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Embodiment Construction

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0021] According to an embodiment of the present invention, a method for storing a large amount of MD5 feature codes is provided, figure 1 It is the flow chart of described storage method, comprises the following steps: read the MD5 character string in the MD5 data file, according to the content of first two bytes, MD5 character string is classified, generate 256 sub-block files; Establish linked list array , use the file name of the block file as the data in the l...

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Abstract

The massive MD5 feature code storage method provided by the invention comprises the following steps: reading MD5 character strings in an MD5 data file, classifying the MD5 character strings according to the content of the first two bytes, and generating 256 block files; establishing a linked list array, and taking the file names of the block files as data in the linked list array; respectively processing the block files, converting each MD5 character string in the block files into integer data, and establishing an array for each MD5 character string for storing the converted integer data; adding the array into a linked list array according to the file name of the block file where the array is located; sorting the arrays; and storing the sorted data. According to the method, the storage and matching efficiency of the massive MD5 feature codes is greatly improved.

Description

technical field [0001] The invention relates to the technical field of password management, in particular to a method for storing massive MD5 feature codes. Background technique [0002] In the process of searching and matching computer virus files, it is inevitable to use file MD5 features for matching calculations to find traces of virus files. In the existing system, the storage and matching of MD5 of files adopts the general string matching method, which is very bloated when dealing with hundreds of millions of MD5 signatures: [0003] 1) In the process of storing hundreds of millions of signatures, a large amount of system memory will be used, which brings many restrictions to the promotion and use of this technology; [0004] 2) The calculation method of character string matching takes a long time in the computer, which is not conducive to fast matching of massive data. [0005] Therefore, when there are hundreds of millions of MD5 signatures, efficient storage and m...

Claims

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Application Information

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IPC IPC(8): G06F21/56
Inventor林凯
OwnerBEIJING KINGSOFT SECURITY MANAGEMENT SYST TECH CO LTD