Design And Implementation Of Audio Key Based On THK88 Security Chip

E-commerce is developing rapidly with the vigorous development of wired network technology and mobile network technology.With the diversification emergence and explosive growth users of intelligent mobile terminal,online payment and mobile payment have been accepted and used by more and more people.Under this circumstance,how to ensure the safety of network and intelligent terminal transactions becomes particularly important.This thesis designs and realizes the USB Key with audio key function based on THK88 security chip,aiming at the present market situation and combining with the common application examples of the existing online banking security field.The key will be applied to intelligent mobile terminals devices to solve the mobile payment security issues.The main work is as following:(1)Analyzed the development process of information security and identity authentication in traditional industry.Expounded the background and domestic and foreign research status of USB Key.(2)Demands for the design are analyzed.Design an overall architecture,including hardware and software,based on the demands.(3)Two parts of this design,hardware and software,are designed in detail according to the architecture.The detailed design of the software includes the audio communication realization scheme,the USB compound device realization scheme,the file system design and the security function design,and so on.The hardware design is simplified well based on the feature of the THK88.(4)The design is tested and analyzed form the USB communication,audio communications,functional testing.In summary,this key based on THK88 security chip,through the advantages of composite devices,can better solve the traditional USB Key compatibility issues.At the same time USB Key technology will be applied to mobile payment and mobile banking fields,to ensure the information security and valid authentication of the intelligent mobile terminal.