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File quick encryption and decryption method for Android platform

An encryption method and file technology, applied in the field of data security, can solve problems such as low efficiency of encrypted files, and achieve the effect of convenient use and simple operation principle.

Inactive Publication Date: 2018-11-23
南京擎天科技有限公司
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies of the prior art, the present invention provides a fast file encryption and decryption method on the Android platform, which can effectively solve the problem of low efficiency of encrypted files in the prior art

Method used

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  • File quick encryption and decryption method for Android platform
  • File quick encryption and decryption method for Android platform

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Embodiment Construction

[0020] The present invention will be described in further detail below according to the drawings and embodiments.

[0021] In order to make the object, technical solution and advantages of the present invention clearer, the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0022] An embodiment of the present invention provides a file encryption method, which includes an encryption step and a decryption step.

[0023] Among them such as figure 1 As shown, the encryption steps include:

[0024] a) Read the file data to be encrypted as a binary byte stream;

[0025] Dynamically split a new storage space, use the Android platform API interface to read the file data as a binary byte stream byte and store it in the storage space;

[0026] b) Randomly divide the binary stream data into several data packets, and store them in a memory array in turn, each of which is less than 8M. The formula for calculating the n...

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Abstract

Currently, the working efficiency of enterprises and public institutions is greatly improved through a mobile office system, and some files with high confidentiality and important photos about commercial information can be stored in intelligent devices with office applications. However, once the intelligent devices are lost or the files are stolen by ill-disposed people by various means, the filesare leaked in an unsecure state, and great difficulty can be brought to a user once the files are utilized by immoral people. The invention provides a file quick encryption and decryption method foran Android platform. Through the method, the problem that file encryption efficiency is low in the prior art can be effectively solved.

Description

technical field [0001] The invention belongs to the field of data security, and in particular relates to a method for fast encryption and decryption of files on an Android platform. Background technique [0002] At present, the mobile office system has greatly improved the work efficiency of enterprises and institutions, and smart devices equipped with office applications will store some highly confidential files and important photos related to business information. And once these smart devices are lost or the files are stolen by interested people through various means, the outflow of files will be in an unsafe state, and once they are used by unscrupulous people, it will bring great difficulties to users. Therefore, the prior art proposes some methods for encrypting files. Although the confidentiality or confidentiality of files can be guaranteed, their encryption methods are relatively complicated, and large files take a long time, so there is an urgent need for a faster e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F21/62G06F21/60
CPCG06F21/602G06F21/6209
Inventor 辛颖梅黄志锋
Owner 南京擎天科技有限公司
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