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Method and device for encrypting and decrypting data, and system

An encryption and decryption algorithm and encryption and decryption technology, applied in the field of computer software, can solve problems such as data information leakage and reduce data information security, and achieve the effect of improving security and avoiding leakage

Inactive Publication Date: 2018-05-25
BEIJING DIDI INFINITY TECH & DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Among them, the intermediate data in the above processing process is plaintext data. Therefore, in the process of storage and transmission of intermedi

Method used

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  • Method and device for encrypting and decrypting data, and system
  • Method and device for encrypting and decrypting data, and system
  • Method and device for encrypting and decrypting data, and system

Examples

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Embodiment Construction

[0093] Exemplary embodiments will be described in detail herein, examples of which are illustrated in the accompanying drawings. Where the following description refers to the drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the illustrative examples below are not intended to represent all implementations consistent with this application. Rather, they are merely examples of apparatus and methods consistent with some aspects of the present application as recited in the appended claims.

[0094] The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to limit the application. As used in this application and the appended claims, the singular forms "a," "the," and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. It will also be understood that the term "and / or" as...

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Abstract

The embodiment of the application discloses a method and device for encrypting and decrypting data, and a system, related to the technical field of computer. The method for encrypting and decrypting the data is applied to a Hadoop system, and the method for encrypting and decrypting the data comprises the following steps: encrypting intermediate data output by a client executing the Map task in the system to obtain ciphertext data; transmitting the ciphertext data to the client executing the Reduce task in the system; decrypting the ciphertext data to restore and obtain the intermediate data;and performing Reduce processing on the intermediate data. By means of the method for encrypting and decrypting the data, the malicious steal of the intermediate data can be avoided in the process ofstorage and transmission, therefore, the leakage of data information is avoided, and the security of the data information in the Hadoop system is improved.

Description

technical field [0001] The present application relates to the technical field of computer software, and in particular, to a method, device and system for encrypting and decrypting data. Background technique [0002] The Hadoop system can perform distributed processing on a large amount of data through MapReduce. As a distributed data storage and computing tool, the Hadoop system has been increasingly used in production environments in all walks of life. With the wide application of Hadoop, the security of data information in Hadoop system becomes more and more important. Generally speaking, when executing a MapReduce task, first, execute the Map task on the client that executes the Map task, output intermediate data, and save the intermediate data to a local file. The client executing the Reduce task first needs to obtain the intermediate data from the data stored by the client executing the Map task, and then further reduce the intermediate data. Among them, the intermedi...

Claims

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Application Information

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IPC IPC(8): H04L29/06H04L9/08G06F21/60
CPCG06F21/602G06F21/606H04L9/0819H04L63/0428H04L63/0435H04L63/062
Inventor 沈国权
Owner BEIJING DIDI INFINITY TECH & DEV