Method for realizing safer information saving by storing information in key list into corresponding subsidiary table through encryption

Abstract

The invention relates to the practical application of an information safety technology to a software system in the public security traffic industry, wherein a corresponding subsidiary table with only one field is established for an information system key list, each record information of the key list is encrypted into one character string to be stored in the corresponding subsidiary table by means of DES (Data Encryption Standard); when the record information changes, an information system is about to modify encryption record information in the corresponding subsidiary table so as to guarantee the consistence of data information in a primary table and the subsidiary table; and when a DBA (Database Administrator) user modifies and deletes the information record at background and cannot find out the corresponding record in the subsidiary table to perform modification and deletion, the information system can find out the modified or deleted record after comparison and can timely recover the data. The information system designed with a method in such a way can be used for preventing a legal or illegal DBA user from directly modifying and deleting the data of the key list in the database, so that the safety performance of the information system is greatly enhanced, and the effect that the data can be viewed but not modified and deleted is achieved.

Description

technical field [0001] The present invention relates to the practical application of information security technology in the software system of the public security traffic control industry. A sub-table corresponding to only one field is established for the key table of the information system, and each record information of the key table is encrypted into a string by DES and stored in the corresponding sub-table. In the table, when the record information changes, the information system will modify the encrypted record information in the corresponding sub-table, so as to ensure the consistency of data information in the main and sub-tables. For example, when the database DBA user modifies and deletes information records in the background, the Find the corresponding records in the table and make corresponding modifications and deletions. After the information system compares, it will find the modified or deleted records, and the data can be recovered in time. The information syste...

AI Technical Summary

Problems solved by technology

[0009] 2.1 Leakage: Information or data is disclosed to unauthorized persons;

[0011] 2.3 Destruction: making the company's resources unusable or unavailable to authorized users;

[0012] 2.4 Tampering: Company resources are misused by unauthorized persons

[0014] 3. Vulnerability of the system Vulnerability comes from the security loopholes of the system. Due to the limitations of human beings’ familiarity with the laws of nature and their application capabilities, there are still many imperfections in the current electronic information systems that provide social applications. There are various manifestations of vulnerability, among which how to prevent database DBA users is a headache