Managing Anonymous Keys in a Fog-Computing Platform

Raphael Schermann, Ronald Toegl, Christian Steger

Research output: Chapter in Book/Report/Conference proceedingConference paperpeer-review


Fog Computing is a decentralized infrastructure layer between Cloud and Edge Devices moving the computation closer to the edge, allowing good latency and bandwidth even for large-scale Internet of Things deployments. Still, devices using fog services are exposed to the immediate application environment and potentially malicious users, thus security, privacy, and trust are critical issues. To provide trust and privacy within fog infrastructures, enabling the secured execution of future Internet of Things services, lightweight collective and distributed attestation mechanism for the bulk attestation of the edge devices and the fog infrastructure can be used, especially leveraging Direct Anonymous Attestation, an anonymous attestation signature that allows attesting to the state of the host system, without violating the specified privacy of the host. As in all cryptographic schemes the management and protection of keys is of the highest significance. We present key management for a fog architecture in the context of the RAINBOW fog platform and show how the computations of a recently published proof-of-concept implementation of Direct Anonymous Attestation can be distributed in our specific fog environment. We provide details on an embedded system-level implementation and performance benchmarks for Internet of Things applications keys stored with proper hardware-based protection within a Trusted Platform Module.

Original languageEnglish
Title of host publication16th International Conference on Availability, Reliability and Security, ARES 2021
PublisherAssociation of Computing Machinery
ISBN (Electronic)9781450390514
Publication statusPublished - 17 Aug 2021
Event16th International Conference on Availability, Reliability and Security: ARES 2021 - Virtuell, Austria
Duration: 17 Aug 202120 Aug 2021

Publication series

NameACM International Conference Proceeding Series


Conference16th International Conference on Availability, Reliability and Security
Abbreviated titleARES 2021


  • Fog Computing
  • Trusted Computing

ASJC Scopus subject areas

  • Software
  • Human-Computer Interaction
  • Computer Vision and Pattern Recognition
  • Computer Networks and Communications


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