Περίληψη:
E-voting systems have emerged as a powerful technology for improving
democracy by reducing election cost, increasing voter participation, and
even allowing voters to directly verify the entire election procedure.
Prior internet voting systems have single points of failure, which may
result in the compromise of availability, voter secrecy, or integrity of
the election results.
In this paper, we present the design, implementation, security analysis,
and evaluation of D-DEMOS, a complete e-voting system that is
distributed, privacy-preserving and end-to-end verifiable. Our system
includes a fully asynchronous vote collection subsystem that provides
immediate assurance to the voter her vote was recorded as cast, without
requiring cryptographic operations on behalf of the voter. We also
include a distributed, replicated and fault-tolerant Bulletin Board
component, that stores all necessary election-related information, and
allows any party to read and verify the complete election process.
Finally, we also incorporate trustees, i.e., individuals who control
election result production while guaranteeing privacy and
end-to-end-verifiability as long as their strong majority is honest.
Our system is the first e-voting system whose voting operation is human
verifiable, i.e., a voter can vote over the web, even when her web
client stack is potentially unsafe, without sacrificing her privacy, and
still be assured her vote was recorded as cast. Additionally, a voter
can outsource election auditing to third parties, still without
sacrificing privacy. Finally, as the number of auditors increases, the
probability of election fraud going undetected is diminished
exponentially.
We provide a model and security analysis of the system. We implement a
prototype of the complete system, we measure its performance
experimentally, and we demonstrate its ability to handle large-scale
elections.
Συγγραφείς:
Chondros, Nikos
Zhang, Bingsheng
Zacharias, Thomas and
Diamantopoulos, Panos
Maneas, Stathis
Patsonakis, Christos and
Delis, Alex
Kiayias, Aggelos
Roussopoulos, Mema
