Method and system for protecting safety data of POS (point-of-sale) machines

Abstract

The invention discloses a method and a system for protecting safety data of POS (point-of-sale) machines. The method includes steps of S1, storing the safety data of the POS machines in an internal storage module of a central processing unit; S2, carrying out operation on the safety data of the POS machines in an internal operation module of the central processing unit. The system comprises the central processing unit. The central processing unit comprises the internal storage module and the internal operation module, the internal storage module is used for storing the safety data of the POS machines, and the internal operation module is used for carrying out operation on the safety data of the POS machines. The method and the system have the advantages that the safety data are stored inside the central processing unit in POS machine service procedures, operation on the safety data is carried out inside the central processing unit in the POS machine service procedures, and the safety data of the POS machines can be prevented from being stored and operated on the outside of the central processing unit and accordingly can be effectively protected against being stolen; designs of external storages can be omitted, accordingly, the development cycle can be shortened, the development cost can be reduced, and the safety and the reliability of the POS machines can be improved; the method and the system can be widely applied to various POS machines.

Description

technical field [0001] The invention relates to a method for protecting cash registers operated in a safe electronic mode, in particular to a method for protecting safety data of POS machines, and the invention also relates to a system for protecting safety data of POS machines. Background technique [0002] RAM: random access memory, random access memory, also known as "random access memory", is an internal memory that directly exchanges data with the CPU, also called main memory (memory), it can be read and written at any time, and the speed is very fast, usually used as A temporary data storage medium for an operating system or other running programs. [0003] FLASH: A type of memory chip, the data inside can be modified through a specific program, which is usually called "flash memory", and its full name is Flash EEPROM Memory. [0004] POS machine is a kind of sales terminal with non-cash settlement function. Because it involves bank card transactions, there are high r...

AI Technical Summary

Problems solved by technology

On the one hand, due to the increase of memory chips, the connection wiring and program design between the CPU and the memory chips are complicated in the design of the prior art, which makes the design and development cycle of the POS machine long and the development cost is high; on the other hand, because the data needs to enter the CPU and storage The connection transmission between chips has the possibility of stealing data by detecting the connection, which increases the security risk of POS machine data