Method for encrypting fixed-length data capable of carrying effective service information in transmission

A business information, fixed-length technology, applied in the field of data encryption and decryption, can solve problems such as the inability to meet readable strings, and achieve the effect of increasing the difficulty of cracking and having obvious effects.

Inactive Publication Date: 2017-08-11
四川智魔王智能科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a fixed-length data encryption method that can carry effective business information transmission and solve

Method used

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  • Method for encrypting fixed-length data capable of carrying effective service information in transmission
  • Method for encrypting fixed-length data capable of carrying effective service information in transmission
  • Method for encrypting fixed-length data capable of carrying effective service information in transmission

Examples

Experimental program
Comparison scheme
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Example Embodiment

[0024] Specific embodiment (taking the length of the encrypted string as 32 bits as an example):

[0025] A data encryption method capable of carrying valid service information transmission and having a fixed length, comprising the following steps:

[0026] S1: Construct the original string of fixed length to be encrypted; if the length of the encrypted string is required to be 32 bits, and the decimal is converted to decimal to 61, the maximum length of the final original string cannot exceed 57 bits. It can ensure that the length of the encrypted string is 32 bits; when constructing the original string, it is necessary to pre-set the storage bits of business information, timestamp and random code. For example, the original string is shown in Table 1 below:

[0027] Table 1 Original String

[0028]

[0029] S2: Fill the service information data into the specified data bits of the original string to obtain a service information string; take the 11-digit mobile phone number...

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PUM

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Abstract

The invention discloses a method for encrypting fixed-length data capable of carrying effective service information in transmission, comprising the following steps: S1, constructing a to-be-encrypted fixed-length original character string; S2, filling specified data bits of the original character string with service information data to get a service information character string; S3, constructing a position exchange code table to disorganize the data bits of the service information character string according to position disorganization rules; S4, inverting the value of the character string after position disorganization; and S5, converting the system of the character string after value inversion according to system conversion rules. Through the method, the problem that the existing popular encryption and decryption algorithm fails to generate a fixed-length character string after encrypting an original character string is solved. According to the method, double modes of encryption in encryption and decryption share encryption and decryption rules and a rule code table, and the rule code table is updated dynamically in variety of ways to increase the cracking difficulty.

Description

technical field [0001] The invention relates to the field of data encryption and decryption, in particular to a fixed-length data encryption method capable of carrying effective service information transmission. Background technique [0002] There are many existing encryption and decryption methods for business data, which are mainly divided into two categories: symmetric encryption and asymmetric encryption. Symmetric encryption mainly includes AES, DES, 3DES, TEA, etc.; asymmetric encryption mainly includes: RSA, Elgamal, knapsack algorithm, Rabin, D-H, ECC (elliptic curve encryption algorithm), etc. In some software communication or data encryption and decryption scenarios that need to generate fixed-length and carry valid business information, the current commonly used encryption and decryption algorithms can only meet the encryption and decryption requirements, but cannot guarantee a fixed-length readable character after encryption string, so that it cannot meet the re...

Claims

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Application Information

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IPC IPC(8): H04L9/06
CPCH04L9/0631
Inventor 袁家权李红
Owner 四川智魔王智能科技股份有限公司
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