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We study game-based definitions of individual and universal verifiability by Smyth, Frink & Clarkson. We prove that building voting systems from El Gamal coupled with proofs of correct key generation ...
Recent results show that the current implementation of Helios, a practical e-voting protocol, does not ensure independence of the cast votes, and demonstrate the impact of this lack of independence on...
How not to Prove Yourself: Pitfalls of the Fiat-Shamir Heuristic and Applications to Helios
fiat-shamir zero-knowledge random oracle model
2016/12/10
This paper is concerned with two variants of the transformation that appear but have not been clearly delineated in existing literature. Both variants start with the prover making a commitment. The st...
Security Proofs for Participation Privacy and Stronger Veri ability for Helios
voting participation privacy privacy
2016/5/3
The Helios voting scheme is well studied including formal
proofs for verifiability and ballot privacy, but it does not provide participation
privacy (i.e. it reveals who participated in the election...
Election Verifiability: Cryptographic Definitions and an Analysis of Helios and JCJ
election schemes individual verifiability universal verifiability
2016/1/3
Definitions of election verifiability in the computational model of cryptography are proposed. The definitions formalize notions of voters verifying their own votes, auditors verifying the tally of vo...
Feature-Driven Cartesian Adaptive Mesh Refinement in the Helios Code
Feature-Driven Cartesian Adaptive Mesh Refinement Helios Code
2015/7/3
Feature-detection methods are applied to drive Cartesian-based adaptive mesh re nement for improved vortex resolution in aerodynamics ow elds. Several approaches such as the Q-criterion, the eigenvalu...
A generic construction for voting correctness at minimum cost - Application to Helios
voting protocols Helios correctness full correctness verifiability
2013/4/18
Most voting schemes aim at providing verifiability: voters should be able to check that their ballots did contribute to the outcome (individual verifiability) and that the tallying authorities did the...
2012年9月27日上午，中国科学院蛋白质科学研究平台Helios Nanolab 600i双束扫描电镜验收会在生物物理研究所召开。会议由孙飞研究员主持，资产处处长韩玉刚、平台主任王翔参加会议。验收专家组由生物物理所徐伟研究员、孙飞研究员、季刚高级工程师组成。用户代表由生物物理所脑与认知国家重点实验室邱荣、姜丽芬组成，电镜厂商代表包括FEI公司客户服务经理王善刚、工程师张新。
Does Helios ensure ballot secrecy?
attack ballot secrecy electronic voting privacy vulnerability
2010/12/9
Helios is an open-source web-based end-to-end verifiable electronic voting system, suitable for use in low-coercion environments. In this paper, we analyse ballot secrecy and discover a vulnerability ...
Transient Expression of Green Fluorescent Protein in Rice Calluses:Optimization of Parameters for Helios Gene Gun Device
Helios gene gun Particle bombardment Rice Synthetic green fluorescent protein Transient expression
2009/7/21
An optimized condition for particle bombardment is necessary for efficient genetic transformation. Parameters for Helios gene gun, the new system for nucleic acid delivery which is mainly consists of...
Photonics and Electronics integration is considered using molecular wafer bonding of an optical SOI processed wafer on top of an electronics wafer. InP sources and Ge photodetectors are processed toge...