Floating-point data encryption method for database

Abstract

The invention relates to a database floating-point data encryption method, which comprises the following steps: S1, dividing a database into a plurality of unit databases, and generating a hexadecimalcode of at least 6 digits for each unit database; S2, sorting the unit database according to the code and taking the code as the file name of the unit database, storing a floating point data to be encrypted in each unit database, and generating a table corresponding to the number and the file name at the same time; S3, arranging at least N interference floating-point data sequentially arranged inthe database of each unit, wherein N >= 3, dividing the floating-point data to be encrypted into three pieces of character according to three area bits, and placing the three pieces of characters inthe area bits corresponding to the interference floating-point data respectively; S4: storing the data generated in the steps S1, S2 and S3 as decrypted data in the administrator; the scheme breaks through the traditional encryption method and adopts the irregular encryption method, so that no correct password can be found completely.

Description

technical field [0001] The invention relates to the field of databases, in particular to a database floating-point data encryption method. Background technique [0002] Floating-point data is divided into floating-point constants and floating-point variables, and the real type of floating-point constants is also called floating-point. Real constants are also called real numbers or floating point numbers. In the C language, real numbers are only in decimal. It has two forms: Decimal form Exponential form. [0003] 1. Decimal number form [0004] It consists of numbers 0~9 and a decimal point. For example: 0.0, .25, 5.789, 0.13, 5.0, 300., -267.8230, etc. are legal real numbers. [0005] 2. Exponential form [0006] It consists of a decimal number, an exponent code sign "e" or "E" and an exponent code (it can only be an integer, and can be signed). Its general form is a E n (a is a decimal number, n is a decimal integer) and its value is a*10, n such as: 2.1E5 (equal to...

AI Technical Summary

Problems solved by technology

[0021] The disadvantage of the existing technology is that although the encryption methods of floating-point data are diversified, there is a fixed set of algorithms for cracking the encryption, so any encryption can be cracked as long as there is enough space between them, which makes data security hidden dangers.

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