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A self-adaptive real-time gzip data decompression method and system combining software and hardware

An adaptive and decompression technology, applied in the field of network security, which can solve the problem of high cost of decompression of gzip data

Active Publication Date: 2020-05-22
INST OF INFORMATION ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem of high cost of gzip data decompression, the present invention provides a method and system for adaptive real-time gzip data decompression combining software and hardware, which is mainly applicable to intrusion detection systems deployed in high-speed networks

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  • A self-adaptive real-time gzip data decompression method and system combining software and hardware
  • A self-adaptive real-time gzip data decompression method and system combining software and hardware

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Embodiment Construction

[0037] The present invention will be described in detail below in conjunction with the embodiments and accompanying drawings, but it is not intended to limit the present invention.

[0038] The overall framework of the system of the present invention is as figure 1 As shown, it consists of three parts: adaptive selector, module controller, and decompression module. The operation steps are as follows:

[0039] 1) When compressed traffic enters the system, the adaptive selector obtains the compressed data length, obtains the load status information of the system CPU, and obtains the module status of the hardware decompression module from the module controller;

[0040] 2) The adaptive selector performs module selection judgment through an adaptive selection algorithm;

[0041] 3) The module controller sends the compressed data to the corresponding decompression module according to the result determined by the adaptive selector;

[0042] 4) The decompression module performs fas...

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Abstract

The invention discloses a software and hardware combined self-adaptive real-time gzip data decompression method and system. The method comprises the following steps of: (1), a self-adaptive selector obtains the length of compression data to be decompressed from compression flow, obtains the current CPU load state information of the system, and obtains the state of a hardware decompression module from a module controller; (2), the self-adaptive selector determines software decompression or hardware decompression of the current compression data to be decompressed according to the obtained information and a set self-adaptive strategy, and then, sends a determination result to the module controller; and (3), the module controller sends the compression data to a corresponding decompression module according to the determination result. By means of the self-adaptive gzip data decompression method provided by the invention, the average decompression performance speed-up ratio can be up to 5-7 times.

Description

technical field [0001] The invention relates to a real-time self-adaptive gzip data decompression method and system applied to a network intrusion detection system combined with software and hardware, belonging to the field of network security. Background technique [0002] There are a large amount of gzip-compressed data in the network traffic, including a large amount of gzip-compressed webpage traffic, large files transmitted by mail, and network layer and application layer traffic of virtual private networks. However, most network security devices make different choices in processing compressed traffic: 1) Modify the header field of the data packet to notify the server that the compressed data in gzip format is not accepted locally, thereby avoiding gzip data in http traffic case where detection cannot be performed. But this approach will reduce the transmission efficiency; 2) convert the received gzip format compressed data to offline processing. This method has great...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03M7/40H03M13/00H04L29/06
CPCH03M7/40H03M13/6502H04L63/14
Inventor 周舟张曦刘庆云郑超杨威杨嵘郭莉
Owner INST OF INFORMATION ENG CHINESE ACAD OF SCI