Blockchain-Based PKI for Crowdsourced IoT Sensor Information

  • Guilherme Vieira PintoEmail author
  • João Pedro Dias
  • Hugo Sereno Ferreira
Conference paper
Part of the Advances in Intelligent Systems and Computing book series (AISC, volume 942)


The Internet of Things is progressively getting broader, evolving its scope while creating new markets and adding more to the existing ones. However, both generation and analysis of large amounts of data, which are integral to this concept, may require the proper protection and privacy-awareness of some sensitive information. In order to control the access to this data, allowing devices to verify the reliability of their own interactions with other endpoints of the network is a crucial step to ensure this required safeness. Through the implementation of a blockchain-based Public Key Infrastructure connected to the Keybase platform, it is possible to achieve a simple protocol that binds devices’ public keys to their owner accounts, which are respectively supported by identity proofs. The records of this blockchain represent digital signatures performed by this Keybase users on their respective devices’ public keys, claiming their ownership. Resorting to this distributed and decentralized PKI, any device is able to autonomously verify the entity in control of a certain node of the network and prevent future interactions with unverified parties.


Internet of Things Blockchain Public Key Infrastructure 



This work was supported by Project “NanoSTIMA: Macro-to-Nano Human Sensing: Towards Integrated Multimodal Health Monitoring and Analytics/NORTE-01-0145-FEDER-000016" is financed by the North Portugal Regional Operational Programme (NORTE 2020), under the PORTUGAL 2020 Partnership Agreement, and through the European Regional Development Fund (ERDF).


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Copyright information

© Springer Nature Switzerland AG 2020

Authors and Affiliations

  • Guilherme Vieira Pinto
    • 1
    Email author
  • João Pedro Dias
    • 1
  • Hugo Sereno Ferreira
    • 1
  1. 1.Faculdade de Engenharia da Universidade do PortoPortoPortugal

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