afety is essential to the interaction process between client and application server in data service.In a number of ongoing services

the authentication between client and application server is mostly limited to the two-side interaction

so it is in a lower level on both security and versatility.HDC（Home Data Service Center） is an important part of ebupt’s home data service platform.This paper introduces the HDC system architecture and business processes to explain the HDC’s authentication mechanism.The client interacts with HDC

eBSF（enhance Bootstrapping Server Function） through a security middleware

reducing the difficulty of the terminal development.This method has high security features and versatility.Therefore

it can be used for both existing businesses and new businesses in the future.