design a secure authentication architecture

design a secure authentication architecture for internet of thing in smart home, through guarantee the access permission in a smart home environment for users and things, ensuring entity identification supportive architecture, and Embedded secure and authentic connection of heterogeneous devices and users. using IRIS print scanner. (Comparison between User Iris print and Preserved Iris code; if Matching then Access to data set is Granted, if not matching then Access is denied) Also you need to use AVISPA Tool and MATLAB program