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Signatures for Privacy, Trust and Accountability in the Cloud: Applications and Requirements
Karlstads universitet, Fakulteten för hälsa, natur- och teknikvetenskap (from 2013), Institutionen för matematik och datavetenskap (from 2013). (PriSec)ORCID-id: 0000-0002-6509-3792
Karlstads universitet, Fakulteten för hälsa, natur- och teknikvetenskap (from 2013), Institutionen för matematik och datavetenskap (from 2013). (PriSec)ORCID-id: 0000-0002-6938-4466
Newcastle University, UK.
Austrian Institute of Technology, Austria.
Vise andre og tillknytning
2015 (engelsk)Inngår i: Privacy and Identity Management. Time for a Revolution?: 10th IFIP WG 9.2, 9.5, 9.6/11.7, 11.4, 11.6/SIG 9.2.2 International Summer School, Edinburgh, UK, August 16-21, 2015, Revised Selected Papers / [ed] David Aspinall, Jan Camenisch, Marit Hansen, Simone Fischer-Hübner, Charles Raab, Springer Publishing Company, 2015, Vol. 476, s. 79-96Konferansepaper, Publicerat paper (Fagfellevurdert)
Abstract [en]

This paper summarises the results of a workshop at the IFIP Summer School 2015 introducing the EU Horizon 2020 project PRISMACLOUD, that is, Privacy and Security Maintaining Services in the Cloud. The contributions of this summary are three-fold. Firstly, it provides an overview to the PRISMACLOUD cryptographic tools and use-case scenarios that were presented as part of this workshop. Secondly, it distills the discussion results of parallel focus groups. Thirdly, it summarises a ``Deep Dive on Crypto'' session that offered technical information on the new tools. Overall, the workshop aimed at outlining application scenarios and eliciting end-user requirements for PRISMACLOUD.

sted, utgiver, år, opplag, sider
Springer Publishing Company, 2015. Vol. 476, s. 79-96
Serie
IFIP Advances in Information and Communication Technology, ISSN 1868-4238 ; 476
Emneord [en]
Privacy, Cloud Computing, Functional Signatures, Malleable Signatures, Graph Signatures, Anonymous Credentials, User Requirements
HSV kategori
Forskningsprogram
Datavetenskap
Identifikatorer
URN: urn:nbn:se:kau:diva-43022DOI: 10.1007/978-3-319-41763-9_6ISBN: 978-3-319-41762-2 (tryckt)OAI: oai:DiVA.org:kau-43022DiVA, id: diva2:937594
Konferanse
IFIP Summer School, Edinburgh, 16.‐21. August 2015
Prosjekter
PRISMACLOUD
Forskningsfinansiär
EU, Horizon 2020, 4805Tilgjengelig fra: 2016-06-15 Laget: 2016-06-15 Sist oppdatert: 2019-12-16bibliografisk kontrollert
Inngår i avhandling
1. The Wicked Problem of Privacy: Design Challenge for Crypto-based Solutions
Åpne denne publikasjonen i ny fane eller vindu >>The Wicked Problem of Privacy: Design Challenge for Crypto-based Solutions
2018 (engelsk)Licentiatavhandling, med artikler (Annet vitenskapelig)
Abstract [en]

Data privacy has been growing in importance in recent years, especially with the continuous increase of online activity. Researchers study, design, and develop solutions aimed at enhancing users’ data privacy. The wicked problem of data privacy is a continuous challenge that defies straightforward solutions. Since there are many factors involved in data privacy, such as technological, legal, and human aspects, we can only aim at mitigating rather than solving this wicked problem. Our aim was to focus on human aspects for designing usable crypto-based privacy-enhancing solutions.  In this thesis, we followed a user centered design method by using empirical qualitative means for investigating user’s perceptions and opinions of our solutions. Most of our work has focused on redactable signatures in the cloud context within the eHealth use-case. Redactable signatures are  a privacy enhancing scheme allowing to remove parts of a signed document by a specified party for achieving data minimization without invalidating the respective signature.

We mainly used semi-structures interviews and focus groups in our investigations. Our results yielded key HCI considerations as well as guidelines of different means for supporting the design of future solutions.

Abstract [en]

Data privacy has been growing in importance in recent years, especially with the continuous increase of online activity. Researchers continuously study, design, and develop solutions aimed at enhancing users’ data privacy. The wicked problem of data privacy is the continuous challenge that defies straightforward solutions. Since there are many factors involved in data privacy, such as technological, legal, and human aspects, we can only aim at mitigating rather than solving this wicked problem.

Our aim was to focus on human aspects for designing usable crypto-based privacy-enhancing solutions.  In this thesis, we followed a user centered design method by using empirical qualitative means for investigating user’s perceptions and opinions of our solutions. Most of our work has focused on redactable signatures in the cloud context within an eHealth use-case. Redactable signatures are a privacy-enhancing scheme, which allow the removal of parts of a signed document by a specified party without invalidating the respective signature. Our results yielded key HCI considerations as well as guidelines of different means for supporting the design of future solutions.

sted, utgiver, år, opplag, sider
Karlstad: Karlstads universitet, 2018. s. 14
Serie
Karlstad University Studies, ISSN 1403-8099 ; 2018:23
Emneord
Data privacy, wicked problems, user-centered design, crypto-based solutions, usability, data minimization, redactable signatures
HSV kategori
Forskningsprogram
Datavetenskap
Identifikatorer
urn:nbn:se:kau:diva-67134 (URN)978-91-7063-856-5 (ISBN)978-91-7063-951-7 (ISBN)
Presentation
2018-06-11, 10:15 (engelsk)
Opponent
Veileder
Merknad

Paper 3 was included as manuscript in the thesis.

Tilgjengelig fra: 2018-05-23 Laget: 2018-04-23 Sist oppdatert: 2019-02-07bibliografisk kontrollert
2. Tinkering the Wicked Problem of Privacy: Design Challenges and Opportunities for Crypto-based Services
Åpne denne publikasjonen i ny fane eller vindu >>Tinkering the Wicked Problem of Privacy: Design Challenges and Opportunities for Crypto-based Services
2020 (engelsk)Doktoravhandling, med artikler (Annet vitenskapelig)
Abstract [en]

Data privacy has been growing in importance in recent years, especially with the constant increase of online activity. Consequently, researchers study, design, and develop solutions aimed at enhancing users' data privacy. The wicked problem of data privacy is a dynamic challenge that defies straightforward solutions. Since there are many factors involved in data privacy, such as technological, legal, and human aspects, we can only aim at mitigating rather than solving this wicked problem.

Our aim was to explore challenges and opportunities with a focus on human aspects for designing usable crypto-based privacy-enhancing technologies (PETs). Mainly, there were three PETs in the cloud context included in our studies: malleable signatures, secret sharing, and homomorphic encryption. Based on the three PETs, services were developed within European research projects that were the scope of our user studies. We followed a user-centered design approach by using empirical qualitative and quantitative means for collecting study data. Our results and tinkering conveyed (i) analysis of different categories of user's perspectives, mental models, and trade-offs, (ii) user requirements for PET services, and (iii) user interface design guidelines for PET services. In our contributions, we highlight considerations and guidelines for supporting the design of future solutions.

Abstract [en]

Data privacy has been growing in importance in recent years, especially with the constant increase of online activity. Consequently, researchers study, design, and develop solutions aimed at enhancing users' data privacy. The wicked problem of data privacy is a dynamic challenge that defies straightforward solutions. Since there are many factors involved in data privacy, such as technological, legal, and human aspects, we can only aim at mitigating rather than solving this wicked problem.

Our aim was to explore challenges and opportunities with a focus on human aspects for designing usable crypto-based privacy-enhancing technologies (PETs). Our results and tinkering conveyed (i) analysis of different categories of user's perspectives, mental models, and trade-offs, (ii) user requirements for PET services, and (iii) user interface design guidelines for PET services. In our contributions, we highlight considerations and guidelines for supporting the design of future solutions.

sted, utgiver, år, opplag, sider
Karlstads universitet, 2020. s. 22
Serie
Karlstad University Studies, ISSN 1403-8099 ; 2020:5
Emneord
Data privacy, wicked problems, user-centered design, privacy enhancing technologies, human factors, malleable signatures, secret sharing, homomorphic encryption
HSV kategori
Forskningsprogram
Datavetenskap
Identifikatorer
urn:nbn:se:kau:diva-75992 (URN)978-91-7867-077-2 (ISBN)978-91-7867-087-1 (ISBN)
Disputas
2020-01-30, 21A342, Eva Eriksson, 10:15 (engelsk)
Opponent
Veileder
Tilgjengelig fra: 2020-01-09 Laget: 2019-12-16 Sist oppdatert: 2022-04-04bibliografisk kontrollert

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