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Abuse-Resistant Pseudonymization and Pseudonym Change without Trusted Third Parties
| Content Provider | Semantic Scholar |
|---|---|
| Author | Florian, Martin Baumgart, Ingmar |
| Copyright Year | 2015 |
| Abstract | Privacy-preservation is becoming increasingly important as more and more areas of life are benefiting from the ubiquitous interconnection of humans and autonomous devices. At the same time, allowing users (and their devices) to collaborate and use services anonymously can lead to abuse, degrading the utility of novel systems and services. Additionally, without limiting access in some form, sybil attacks become possible where adversaries create large numbers of fake virtual identities (sybils). This both enhances the potential magnitude of abuse and enables malicious users to avoid blacklisting. The issuing of unlinkable pseudonyms to users is a common solution to the challenge of hiding user identities while enabling access control and the effective protection against sybil attacks. Additionally, unlinkable pseudonym changes must be made possible for reducing the linkability between (potentially privacy-relevant) data samples originating from the same user. Established approaches for enabling sybil-resistant pseudonymization and pseudonym change (PPC) inherently require a trusted third party (TTP) like a certification authority for enforcing issuing criteria and preventing sybil attacks. Upon compromise of the TTP, large-scale sybil attacks become possible and the trustworthiness of issued pseudonyms is greatly reduced. Thus, centralized pseudonym issuers become attractive targets for attacks, resulting in high operational costs for maintaining their security. Additionally, the notion of universal trust anchors shared by all system participants is questionable when considering mobile users in a globally interconnected world. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://telematics.tm.kit.edu/publications/Files/568/ITG-NHNS-2015-Florian.pdf |
| Alternate Webpage(s) | https://uni-tuebingen.de/index.php?eID=tx_securedownloads&file=/fileadmin/Uni_Tuebingen/Fakultaeten/InfoKogni/WSI/KN/Dokumente/ZdN_2015_ITG-Workshop_NHNS_M._Florian.pdf&g=0&hash=56a74289b01c9ec564929cf261f69f0685b5e4b4&p=64698&t=1585785407&u=0 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
