Credibility certification system and method for network transaction

The invention discloses a credibility certification system and method for network transaction, and belongs to the technical field of network transaction credibility authentication. A bottom layer of the system supports two mainstream operating systems including a Windows operation system and a Linux operation system. Foundation management modules including a communication management module, a certificate management module and a database management module are supported by the bottom layer. A fourth-party authentication domain is arranged on the foundation management module. The system further comprises a user domain, an E-commerce domain, a third-party payment domain and the like. The credibility certification method comprises the steps that firstly, when the network transaction is carried out, a user uploads a digital certificate to carry out digital authentication after logging into a safety client side, and an E-commerce party and a third party for payment upload their digital certificates at the same time to carry out corresponding digital authentication; secondly, after digital authentication is passed, the user can download a behavior certificate through a user behavior certificate downloading module, and the three parties formally enter the transaction procedure; other steps are carried out. The credibility certification system and method have very good expandability, transportability and universality, configuration and deployment are flexible and convenient, and third-party software support is not needed.