The principle of privacy-by-design more often than not requires the implementation of privacy-enhancing technologies (PETs). In turn, the implementation of PETs requires indepth knowledge of cryptography engineering, which hinders a.o. rapid prototyping, modularity, and readability. This article proposes research on loose coupling of cryptographic primitives to business logic. As a running example, we look at the permission management of Signal{\textquoteright}s private groups, and propose an alternative design, keeping in mind extensibility, modularity, and improved transparency and auditability.
De Smet, R, Godden, T, Steenhaut, K & Braeken, A 2025, Decoupling Permission Management from Cryptography for Privacy-Preserving Systems. in Workshop on Innovation in Metadata Privacy: Analysis and Construction Techniques 2025., 50, NDSS Symposium, San Diego, CA, United States, pp. 1, Workshop on Innovation in Metadata Privacy: Analysis and Construction Techniques 2025, San Diego, California, United States, 28/02/25. https://doi.org/10.14722/impact.2025.23050
De Smet, R., Godden, T., Steenhaut, K., & Braeken, A. (Accepted/In press). Decoupling Permission Management from Cryptography for Privacy-Preserving Systems. In Workshop on Innovation in Metadata Privacy: Analysis and Construction Techniques 2025 (pp. 1). Article 50 NDSS Symposium. https://doi.org/10.14722/impact.2025.23050
@inproceedings{66ba20b5755a40ee84fd4c4ebffbdc62,
title = "Decoupling Permission Management from Cryptography for Privacy-Preserving Systems",
abstract = "The principle of privacy-by-design more often than not requires the implementation of privacy-enhancing technologies (PETs). In turn, the implementation of PETs requires indepth knowledge of cryptography engineering, which hinders a.o. rapid prototyping, modularity, and readability. This article proposes research on loose coupling of cryptographic primitives to business logic. As a running example, we look at the permission management of Signal{\textquoteright}s private groups, and propose an alternative design, keeping in mind extensibility, modularity, and improved transparency and auditability.",
author = "{De Smet}, Ruben and Tom Godden and Kris Steenhaut and An Braeken",
year = "2025",
doi = "10.14722/impact.2025.23050",
language = "English",
pages = "1",
booktitle = "Workshop on Innovation in Metadata Privacy: Analysis and Construction Techniques 2025",
publisher = "NDSS Symposium",
note = "Workshop on Innovation in Metadata Privacy: Analysis and Construction Techniques 2025, IMPACT ; Conference date: 28-02-2025",
url = "https://www.ndss-symposium.org/ndss2025/co-located-events/impact/accepted-papers/",
}