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Encryption method for database numeric fields

An encryption method and numerical technology, applied in digital data protection, electronic digital data processing, instruments, etc., can solve the problem that the decryption performance of the algorithm cannot meet the actual needs, and achieve the effect of simple calculation and high performance

Active Publication Date: 2020-09-22
上海派拉软件股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the use of some complex algorithms can meet the confidentiality and make the ciphertext conform to the database field specifications, the decryption performance of such algorithms often cannot meet the actual needs

Method used

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  • Encryption method for database numeric fields
  • Encryption method for database numeric fields

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Embodiment Construction

[0030] Below in conjunction with specific embodiment, further illustrate the present invention. It should be understood that these examples are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art may make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of the present application.

[0031] The encryption method of a database numerical field provided by the present invention is based on the following concepts:

[0032] In statistics, on the basis of statistical grouping, all the unit numbers of the population are merged and arranged in groups to form the distribution of the number of units in each group in the population, which is called statistical distribution. Each type of different parameter stati...

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Abstract

The invention relates to a database numeric field encryption method, which establishes mapping between a real number and a number between 0 and 1 based on quantiles of statistical distribution so as to realize encryption of a numeric field, and has the following advantages: fixity: after parameters of statistical distribution are fixed, the mapping is fixed; confidentiality: for a certain distribution, other unknown mapping relationships cannot be accurately and reversely speculated through the mastered data unless the mapping relationship with the measurement of 1 is mastered; and the calculation is simple: for the given distribution, the mapping relationships are in one-to-one correspondence, so that the calculation is relatively simple, and the performance is relatively high.

Description

technical field [0001] The invention relates to an encryption method for a numerical field of a database based on statistical distribution and quantiles of the statistical distribution. Background technique [0002] With the rise of the Internet and big data, data has become a means of production that cannot be ignored in social production, and data security has also become a core topic in the field of Internet security. The algorithm for data encryption has also become a new field of algorithm research. [0003] The data in the database can be roughly divided into numeric fields and non-numeric fields according to the different contents. A numeric field refers to the data contained in the field, such as a field with numbers such as 10; a non-numeric field refers to a field in which the data contained in the field is not a number. [0004] Numerical fields generally contain extremely sensitive information, such as: employee income, employee private phone numbers, and contra...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F21/60G06F21/62
CPCG06F21/602G06F21/6227
Inventor 张毅骏
Owner 上海派拉软件股份有限公司