Conference paper Open Access

Disposable Yet Official Identities (DYOI) for Privacy-Preserving System Design - The case of COVID-19 digital document verification and credential-based access control in ad hoc outdoor and indoor settings (and beyond)

Petros Kavassalis; Nikos Triantafyllou; Panagiotis Georgakopoulos; Antonis Stasis; Rob van Kranenburg


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{
  "publisher": "Zenodo", 
  "DOI": "10.5281/zenodo.4016977", 
  "language": "akh", 
  "title": "Disposable Yet Official Identities (DYOI) for Privacy-Preserving System Design - The case of COVID-19 digital document verification and credential-based access control in ad hoc outdoor and indoor settings (and beyond)", 
  "issued": {
    "date-parts": [
      [
        2020, 
        9, 
        6
      ]
    ]
  }, 
  "abstract": "<p>In this paper we report on the design of a service system to endow next-generation COVID-19 mobile applications with the capacity: a) to instantly manage and verify a wide range of possible COVID-19 digital documents (circulation attestations, work or travel permits based on approved COVID-19 tests, vaccination certificates, etc.) and, b) to provide credential-based access control, especially in cases where the Verifier is not a web entity but a human agent with a smartphone, or an IoT device -- mainly in ad hoc outdoor and indoor settings. The system has been designed as a response to the specific needs of a health emergency situation, but it may have a broader application in different cased and areas of control (such as airport and train stations checking points and board controls), where the verification process must exclude the possibility of a physical interaction between the controller and the subject of control, by maintaining a &ldquo;safe distance&rdquo; between them and while preserving a certain privacy for the subject of control. Our approach levers the potential of Disposable Identities, Self-Sovereign Identities technologies and Verifiable Credentials (VCs) to enable digital document verification and credential-based access control in ad hoc outdoor and indoor settings (and beyond). Towards this, we specifically introduce the concept of &ldquo;Derivative&rdquo; (i.e., transcoded/contextual) Verifiable Credentials. A Derivative VC is a derived bond contract guaranteeing the validity and ownership over the underlying contracts (VCs) whose: a) usability is restricted in a very specific context (that of the &ldquo;local&rdquo; and time-limited interaction between a Subject and a Service Provider) and, b) linking table points only to a specific &ldquo;Pairwise DID&rdquo;.</p>", 
  "author": [
    {
      "family": "Petros Kavassalis"
    }, 
    {
      "family": "Nikos Triantafyllou"
    }, 
    {
      "family": "Panagiotis Georgakopoulos"
    }, 
    {
      "family": "Antonis Stasis"
    }, 
    {
      "family": "Rob van Kranenburg"
    }
  ], 
  "id": "4016977", 
  "note": "This research has received partial funding from the European Commission (SEAL project funded by CEF Grant Agreement No INEA/CEF/ICT/A2018/1633170 &amp; NGI Forward project funded by H2020 Grant Agreement number 825652), and from SIEMENS (SBchain project funded via Settlement Agreement with Hellenic Republic)", 
  "version": "3.0", 
  "type": "paper-conference", 
  "event": "Data for Policy 2020 (DfP2020)"
}
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