Security is an important cornerstone for the Internet of Things (IoT). Due to the expected pervasion of IoT and its relevance in all fields of human activity, it will likely become a critical asset. Thus, the integrity of data and trust in the services offering the data is crucial. Further, to protect important data and user interests, confidentiality of data and privacy of users must be ensured. Moreover, each request and response in the frame of IoT has to be authenticated in a proper and secure way to ensure accountability and proper operation. Finally, with the usage of IoT for vital functionalities, availability becomes increasingly important, although availability is out of the scope of this document. The resolution infrastructure introduced in this work is a crucial component of the overall IoT architecture and most security goals are anchored here. Our suggested architecture ensures privacy and security for the resolution functions and offers as well a basis for other security functionalities needed outside the resolution infrastructure.