The pynchon gate

Sassaman, Len; Cohen, Bram; Mathewson, Nick

doi:10.1145/1102199.1102201

Cited by 35 publications

(3 citation statements)

References 13 publications

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“…Pynchon Gate [61] (2005) is one of the earliest works that used PIR to design private communications; their work proposes a practical pseudonymous mail retrieval system. Their system consists of three types of nodes: a nym server, a collator, and distributors.…”

Section: Private-read Based Systemsmentioning

confidence: 99%

SoK: Metadata-Protecting Communication Systems

Sasy,

Goldberg

2024

PoPETs

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Protecting metadata of communications has been an area of active research since the dining cryptographers problem was introduced by David Chaum in 1988. The Snowden revelations from 2013 resparked research in this direction. Consequently over the last decade we have witnessed a flurry of novel systems designed to protect metadata of users' communications online. However, such systems leverage different assumptions and design choices to achieve their goal; resulting in a scattered view of the desirable properties, potential vulnerabilities, and limitations of existing metadata-protecting communication systems (MPCS). In this work we survey 31 systems targeting metadata-protected communications, and present a unified view of the current state of affairs. We provide two different taxonomies for existing MPCS, first into four different categories by the precise type of metadata protections they offer, and next into six families based on the core techniques that underlie them. By contrasting these systems we identify potential vulnerabilities, as well as subtle privacy implications of design choices of existing MPCS. Furthermore, we identify promising avenues for future research for MPCS, and desirable properties that merit more attention.

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Section: Private-read Based Systemsmentioning

confidence: 99%

SoK: Metadata-Protecting Communication Systems

Sasy,

Goldberg

2024

PoPETs

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“…Using these statistical mechanisms, the system could report confidence levels about the quality of reports arriving from sensors. The system could then provide anonymous feedback [59] to the sensor nodes that have returned low-confidence reports, following which honest nodes can recalibrate their sensors. The system could also temporarily "revoke" the node's ability to report data using an anonymous blocking or revocation system [60]- [62].…”

Section: B Integrity Issuesmentioning

confidence: 99%

Opportunistic sensing: Security challenges for the new paradigm

Kapadia

Kotz

Triandopoulos

2009

2009 First International Communication Systems and Networks and Workshops

110

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We study the security challenges that arise in opportunistic people-centric sensing, a new sensing paradigm leveraging humans as part of the sensing infrastructure. Most prior sensor-network research has focused on collecting and processing environmental data using a static topology and an application-aware infrastructure, whereas opportunistic sensing involves collecting, storing, processing and fusing large volumes of data related to everyday human activities. This highly dynamic and mobile setting, where humans are the central focus, presents new challenges for information security, because data originates from sensors carried by people-not tiny sensors thrown in the forest or attached to animals. In this paper we aim to instigate discussion of this critical issue, because opportunistic peoplecentric sensing will never succeed without adequate provisions for security and privacy. To that end, we outline several important challenges and suggest general solutions that hold promise in this new sensing paradigm.

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“…The Pynchon Gate [70] constitutes a rather different approach to recipient pseudonymity. Instead of delivering messages to recipients over a remailer network that supports reply messages, the Pynchon Gate makes use of private information retrieval techniques.…”

Section: Private Information Retrievalmentioning

confidence: 99%

Privacy-enhancing Technologies for Private Services

Loesing

2008

Schriften Aus Der Fakultät Wirtschaftsinformatik Und Angewandte Informatik Der Otto-Friedrich-Universität Bamberg

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The pynchon gate

Cited by 35 publications

References 13 publications

SoK: Metadata-Protecting Communication Systems

SoK: Metadata-Protecting Communication Systems

Opportunistic sensing: Security challenges for the new paradigm

Privacy-enhancing Technologies for Private Services

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