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A file processing and file detection method and device

A file processing and file technology, applied in the field of information processing, can solve the problem of whether the unfavorable fingerprint file has been tampered with, and achieve the effect of low collision rate

Active Publication Date: 2021-02-12
NEW H3C SECURITY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, since the length and content of the above fields are fixed, it is easy for an attacker to know the above fields in the fingerprint file, so as to avoid the above fields and tamper with the fingerprint file, and the fingerprint file generated by the above method is not conducive to the detection of fingerprints. Whether the file has been tampered with

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  • A file processing and file detection method and device
  • A file processing and file detection method and device
  • A file processing and file detection method and device

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Embodiment Construction

[0040] The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0041] Since the fingerprint file generated by applying the solution provided by the prior art is not conducive to detecting whether the fingerprint file has been tampered with, in order to solve this technical problem, the embodiment of the present application provides a file processing and file detection method and device.

[0042] In one embodiment of the present application, a file processing method is provided, the above method includes:

[0043] Obtain the target file of the s...

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Abstract

The embodiment of the present application provides a file processing and file detection method and device, which relate to the field of information processing technology, wherein the file processing method includes: obtaining the target file of the summary information of the file to be generated; using a preset hash algorithm and the first Perform hash calculation and encryption processing on the target file with a key to obtain encrypted file summary information; use a second key to perform asymmetric encryption processing on the first key to obtain an encrypted first key ; Adding the encrypted file summary information and the encrypted first key to a preset location of the target file. After the file is processed by applying the solution provided by the embodiment of the present application, it is beneficial to detect whether the file has been tampered with.

Description

technical field [0001] The present application relates to the technical field of information processing, in particular to a file processing and file detection method and device. Background technique [0002] With the development of network technology, the application of network in people's work and life is becoming more and more common. But now the network is full of massive files. Based on factors such as saving network resources, maintaining copyright, and data protection, it is necessary to deduplicate and filter the files flooding the network. [0003] Currently, deduplication and filtering of files are usually based on fingerprint files. In the prior art, in order to prevent the fingerprint file used in the deduplication and filtering process from being a tampered file, when generating the fingerprint file, in addition to considering the fingerprint of the file, a fixed field with a fixed length is also set in the fingerprint file , for example, a fixed-length all-zer...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F21/60G06F16/14
CPCG06F21/602
Inventor 张志凯刘亚龙
Owner NEW H3C SECURITY TECH CO LTD