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Data encryption method, decryption method and decryption device

A data encryption and data decryption technology, applied in the field of data processing, can solve the problems of large system overhead and high communication overhead cost, and achieve the effect of improving accuracy and reducing system overhead and communication overhead.

Active Publication Date: 2014-06-11
CHINA MOBILE GRP HEILONGJIANG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the technical problems of large system overhead and high communication overhead cost in the prior art after data encryption, the present invention proposes a data encryption method and device, and a data decryption method and device

Method used

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  • Data encryption method, decryption method and decryption device
  • Data encryption method, decryption method and decryption device
  • Data encryption method, decryption method and decryption device

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Embodiment Construction

[0040] figure 1 It is a flowchart of the first embodiment of the data encryption method of the present invention, such as figure 1 As shown, the data encryption method provided by the embodiment of the present invention is executed by the data encryption device in the data storage system, and encrypts and desensitizes the sensitive data stored in the data storage system while retaining the original format, and the encrypted data The required storage space is the same size as the original storage space required for sensitive data, thereby reducing system overhead and communication costs. The data encryption device can be implemented in the form of software and / or hardware. The method includes:

[0041] Step S100, obtaining sensitive data;

[0042] Step S102, judging that the data type of the sensitive data is a character type or a numerical type, if it is a character type, enter step S104, and if it is a numerical type, enter step S106;

[0043] The data encryption device obt...

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PUM

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Abstract

The invention discloses a data encryption method, a data encryption device, a data decryption method and a data decryption device. The method comprises the following steps: obtaining sensitive data, and judging that the data type of the sensitive data belongs to a character type or a numeric type; if the data type of the sensitive data belongs to the character type, extracting single original characters in the sensitive data, and converting the single original characters into encryption characters in an encryption character set so that the sensitive data are converted into encryption data; if the data type of the sensitive data belongs to the numeric type, converting later N original numbers in the sensitive data into N encryption numbers so that the sensitive data are converted into the encryption data. The data are encrypted by retaining the manner of original data, so that the required storage space of the encryption data in a data storage system is not changed, and the system overhead and communication overhead of a traditional encryption algorithm are reduced.

Description

technical field [0001] The invention relates to the field of data processing, in particular to a data encryption method, a decryption method and a device. Background technique [0002] With the development of computer technology, people generally use computers to store and transmit data. However, many stored and transmitted data have confidentiality requirements, so it is necessary to encrypt the stored and transmitted data. For example, the security of telecom customers’ sensitive data information has always been a common concern of customers and operators. Once customers’ sensitive data is accidentally modified or leaked, it will cause customers’ private information to be abused, which will bring business income to operators and enterprises. The company's image, customer satisfaction, etc. will have a major impact, and even affect social stability, causing incalculable losses. [0003] At present, telecom operators store a large amount of customer sensitive data. In trad...

Claims

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Application Information

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IPC IPC(8): G06F21/62
CPCG06F21/62G06F16/254
Inventor 赵洪松何鸿凌迟建德孙德志朱晨王广华苏燕王依兴张硕李杨
Owner CHINA MOBILE GRP HEILONGJIANG CO LTD
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