A data transmission system and method based on audio signals

Abstract

The invention relates to the field of information security, in particular to a verification data transmission system and method for use in the traditional token data verification process, and provides an audio signal based data transmission system. The system comprises a client, a server and an acoustic token. The client is used for generating data to be transmitted and packaging the data into a corresponding data frame. The server is used for generating a first frame check value according to the data frame and converting the data frame and the first frame check value into an audio signal. The acoustic token is used for generating a second frame check valve from the data frame to check the first frame check valve so as to encrypt the data, to be transmitted to the acoustic token, by an encryption algorithm. In the whole process, security of the data to be transmitted is guaranteed, and even after the data is intercepted in the transmitting process, cracking the content of the data is very difficult.

Description

technical field [0001] The invention relates to the field of information security, in particular to a system and method for verifying data transmission in the process of traditional token verifying data. Background technique [0002] Dynamic password, that is, an unpredictable and difficult-to-crack random authentication string password is generated according to a specific algorithm, and each generated password can only be used once and is valid for a limited time interval, so it can be used to confirm the legality of the user's identity This method is widely used in banks, securities and third-party payment, and OA systems of large enterprises, etc. [0003] At present, dynamic tokens are widely used to generate dynamic passwords to realize the security of network transactions and other processes. Technically, there are three forms of dynamic tokens, time synchronization, event synchronization, and challenge / response. Among them, the challenge / response method is often used...

AI Technical Summary

Problems solved by technology

Technically, there are three forms of dynamic tokens, time synchronization, event synchronization, and challenge / response. Among them, the challenge / response method is often used in online business. It enters the challenge code issued by the server on the website / response, and the dynamic token Enter the challenge code with the card, and generate a 6 / 8-digit random number through the built-in algorithm. The password is valid once. This technology is currently the most widely used, including scratch cards, SMS passwords, and dynamic tokens. There are also challenge / response forms. However, this method requires manual input of the challenge code, which is cumbersome and the user experience is not high.

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