Method and system for improving data transmission security

Abstract

The invention discloses a method and a system for improving data transmission security. The method comprises the following steps of: connecting a Master end and a Slave end through GPIO (General Purpose Input / Output) and SPI (Serial Peripheral Interface) buses and a data communication bus; pulling down a GPIO (General Purpose Input / Output) signal of the Master end, actively initiating communication by the Master end, and transmitting interaction data and a corresponding check value to the Slave end; transmitting interaction data through a data communication bus, and transmitting a verification value through an SPI bus; enabling the Slave end to judge a transmission result of the data based on the received interaction data and the verification value; and outputting a PWM (Pulse Width Modulation) signal on a GPIO (General Purpose Input / Output) interface of the Slave end, requesting to initiate communication by the Slave end, and informing the Master end of the transmission result. According to the method, the validity of communication data is verified through GPIO and SPI buses, so that the security of data transmission is improved; and meanwhile, the verification value and the interaction data are sent through different buses, so that the security of data transmission is improved.

Description

Technical field [0001] The present invention relates to network communication technology field, particularly relates to a method and system to improve data transmission security. Background technique [0002] The purpose is to network traffic data secure transmission to the receiver, communications security products more and more attention all manufacturers and users. [0003] Currently the data transfer mode is used: the communication originator (the Master) sends to the recipient (the Slave) the original data and a check value data 1 (CRC \ MD5 \ parity, etc.), the received data Slave carried out the same arithmetic operation check value 2, and compared with the received check value 1. If they are consistent, the data transmission is considered successful and effective; If not, the transmission is considered failed initiative to inform the Master, strategy triggers its operation (e.g., retransmission) of a transmission failure; said network data communication process ends, and ...

AI Technical Summary

Problems solved by technology

[0003] The current method of data transmission is: the communication initiator (referred to as Master) sends the original data and the check value 1 of the data (CRC\MD5\parity check, etc.) to the receiver (referred to as Slave), and the slave Perform the same algorithm to calculate the check value 2, and compare it with the received check value 1. If they are consistent, the data transmission is considered successful and valid; Trigger the action strategy (such as retransmission) when the transmission fails; in the above-mentioned network communication process, the transmission check value and original data at both ends of the data generally interact through the same data communication bus, and the validity verification of data transmission is guaranteed through data interaction , and there are security loopholes in the above transmission verification process. For example, the cracker can actively send various test information to the cracked device continuously, and count the action rules of the sender. As long as the data communication bus is cracked, the original data can be obtained at the same time. Data and check value, so as to intercept the communication data, that is, the current data transmission method has the problems of easy cracking and low security

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