Inonymous: Anonymous Invitation-Based System

Boshrooyeh, Sanaz Taheri; Küpçü, Alptekin

doi:10.1007/978-3-319-67816-0_13

Cited by 4 publications

(2 citation statements)

References 4 publications

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“…Other research considers the use of cryptography for collaborating on graphbased data between two parties with privacy protections. However such works consider problems other than link prediction: merging and query performed on knowledge graphs owned by different parties [6]; whether one graph is a subgraph of the other graph [23]; single-source shortest distance and all-pairs shortest distance both in sparse and dense graphs [1]; all pairs shortest distance and single source shortest distance [4]; and transitive closure [14]; anonymous invitationbased system [2] and its extension to malicious adversarial model [3]. While it may be possible to transform some of these into finding common neighbours with a black-box approach, we provide a purpose-built protocol for common neighbour.…”

Section: Related Workmentioning

confidence: 99%

Privacy-Preserving Link Prediction

Demirag¹,

Namazi²,

Ayday³

et al. 2022

Preprint

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Consider two data holders, ABC and XYZ, with graph data (e.g., social networks, e-commerce, telecommunication, and bio-informatics). ABC can see that node A is linked to node B, and XYZ can see node B is linked to node C. Node B is the common neighbour of A and C but neither network can discover this fact on their own. In this paper, we provide a two party computation that ABC and XYZ can run to discover the common neighbours in the union of their graph data, however neither party has to reveal their plaintext graph to the other. Based on private set intersection, we implement our solution, provide measurements, and quantify partial leaks of privacy. We also propose a heavyweight solution that leaks zero information based on additively homomorphic encryption.

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Section: Related Workmentioning

confidence: 99%

Privacy-Preserving Link Prediction

Demirag¹,

Namazi²,

Ayday³

et al. 2022

Preprint

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show abstract

“…[37] provided a quantitative point of reference for the difficulty of remembering random passwords, which is necessary to employ traditional solutions securely. Two-Factor Authentication (2FA): These schemes generally employ any combination of two of what you know (e.g., password), what you have (e.g., token), who you are (e.g., biometric), and who you know (see [12,34]). 2FA aims to strengthen the security of traditional password authentication by deploying a secondary authentication token (e.g., SMS sent to mobile device).…”

Section: Related Workmentioning

confidence: 99%

User Perceptions of Security and Usability of Mobile-Based Single Password Authentication and Two-Factor Authentication

İşler

Küpçü

Coşkun

2019

Lecture Notes in Computer Science

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Two-factor authentication provides a significant improvement over the security of traditional password-based authentication by requiring users to provide an additional authentication factor, e.g., a code generated by a security token. In this decade, single password authentication (SPA) schemes are introduced to overcome the challenges of traditional password authentication, which is vulnerable to the offline dictionary, phishing, honeypot, and man-in-the-middle attacks. Unlike classical password-based authentication systems, in SPA schemes the user is required to remember only a single password (and a username) for all her accounts, while the password is protected against the aforementioned attacks in a provably secure manner. In this paper, for the first time, we implement the state-of-the-art mobilebased SPA system of Acar et al. (2013) as a prototype and assess its usability in a lab environment where we compare it against two-factor authentication (where, in both cases, in addition to the password, the user needs access to her mobile device). Our study shows that mobilebased SPA is as easy as, but less intimidating and more secure than twofactor authentication, making it a better alternative for online banking type deployments. Based on our study, we conclude with deployment recommendations and further usability study suggestions.

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On Security of Anonymous Invitation-Based System

Yanai

Cruz

2018

Lecture Notes in Computer Science

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Inonymous: Anonymous Invitation-Based System

Cited by 4 publications

References 4 publications

Privacy-Preserving Link Prediction

Privacy-Preserving Link Prediction

User Perceptions of Security and Usability of Mobile-Based Single Password Authentication and Two-Factor Authentication

On Security of Anonymous Invitation-Based System

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