Design And Implementation Of Cloud Signature System Based On Trusteeship Operating Mode

With the extensive application of digital information technology and Internet technology,information security which protects the stability of the internet has been paid more and more attentions.The traditional digital signature technology based on encryption and authentication can guarantee the confidentiality,authenticity,completeness and non-repudiation in the network transactions,but when the files to be signing or during transmission after signed will be subject to signature environment,hardware terminals and other factors,signature files between different signature systems are not compatible generally.In recent years,the on-demand cloud service technology can provide dynamically configured network resources,which we can make use of to improve the traditional signature and create digital signature based on cloud services.This cloud signature can achieve cross-platform operation of digital signatures by unify the terminal environment and provide services via network.The thesis proposed a digital signature technology scheme dependent on cloud server on the basis of discussing the principle of digital signature,the scheme defined cloud signature technology,analyzed its entity composition and classified three working modes which called proxy,trusteeship and consultation combined with the real scene in application.According to the relevant regulations of the existing domestic signature law,and taking into account the enforceability of the system application,the thesis utilize cloud signature technology and specific application platform to design a cloud signature system based on trusteeship operating mode.It contains design of work scheme,system architecture and function modules,establish of system platform and Java Web development work,completing programming implementation of front desk,backend and the underlying database.The design which put the private key in the cloud encryption machine for the first time and employ it through identity authentication technology can achieve various advantages of cloud signature.Finally,the article tested the system by simulating the user’s various operations,and the verification results show the design of the cloud signature system reached the original goals and possess a variety of functions of digital signature in the cloud.The design of the cloud signature system creates the conditions for the specific application of cloud signature technology,clarify the market-oriented conversion made by traditional technology to meet the development of the times.It provides the foundation for the-further development of digital signature technology and the real market application in China.