• Publications
  • Influence
SoK: Research Perspectives and Challenges for Bitcoin and Cryptocurrencies
TLDR
This work identifies three key components of Bit coin's design that can be decoupled, and maps the design space for numerous proposed modifications, providing comparative analyses for alternative consensus mechanisms, currency allocation mechanisms, computational puzzles, and key management tools. Expand
Mixcoin: Anonymity for Bitcoin with Accountable Mixes
TLDR
It is demonstrated that incentives of mixes and clients can be aligned to ensure that rational mixes will not steal, and the scheme offers similar anonymity to traditional communication mixes against active attackers. Expand
Scantegrity: End-to-End Voter-Verifiable Optical- Scan Voting
TLDR
Scantegrity is the first voting system to offer strong independent verification without changing the way voters mark optical scan ballots, and it complies with legislative proposals requiring "unencrypted" paper audit records. Expand
A First Look at Browser-Based Cryptojacking
TLDR
This paper surveys the recent trend to- wards in-browser mining of cryptocurrencies, outlines an ethical framework for considering whether it should be classified as an attack or business opportunity, and makes suggestions for the detection, mitigation and/or prevention of browser-based mining for non- consenting users. Expand
SoK: SSL and HTTPS: Revisiting Past Challenges and Evaluating Certificate Trust Model Enhancements
TLDR
This work survey and categorize prominent security issues with HTTPS and provides a systematic treatment of the history and on-going challenges, intending to provide context for future directions. Expand
On Bitcoin as a public randomness source
TLDR
This work formalizes the use of Bitcoin as a source of publiclyverifiable randomness and shows that any attack on this beacon would form an attack on Bitcoin itself and hence have a monetary cost that can be bound, unlike any other construction for a public randomness beacon in the literature. Expand
Bitcoin's academic pedigree
TLDR
The concept of cryptocurrencies is built from forgotten ideas in research literature and needs to be understood in order to be able to be implemented in the real world. Expand
Scantegrity II Municipal Election at Takoma Park: The First E2E Binding Governmental Election with Ballot Privacy
TLDR
This case study describes the various efforts that went into the Scantegrity II voting system--including the improved design and implementation of the voting system, streamlined procedures, agreements with the city, and assessments of the experiences of voters and poll workers. Expand
Scantegrity II: End-to-End Verifiability for Optical Scan Election Systems using Invisible Ink Confirmation Codes
TLDR
An enhancement to Scantegrity II keeps ballot identification and other unique information that is revealed to the voter in the booth from being learned by persons other than the voter, achieving privacy that is essentially equivalent to that of ordinary paper ballot systems. Expand
A first look at the usability of bitcoin key management
TLDR
It is found that Bitcoin shares many of the fundamental challenges of key management known from other domains, but that Bitcoin may present a unique opportunity to rethink key management for end users. Expand
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