Cryptographically verifiable anonymous voting using pan-european e-IDs

TL;DR

This paper proposes a cryptographically secure, anonymous voting protocol leveraging European e-ID infrastructure, combining blind signatures and onion routing to ensure vote privacy and prevent multiple voting.

Contribution

It introduces a novel anonymous voting method that integrates European e-IDs with cryptographic techniques and onion routing for secure, verifiable elections.

Findings

Designed a detailed anonymous voting protocol

Analyzed a reference implementation for security

Suggested improvements to enhance robustness

Abstract

In this paper we explore a method to create anonymous services on top of the STORK framework, to be used for electronic surveys or elections. The STORK project aims to realize a single electronic identification and authentication area across Europe. For verifiable and anonymous voting, users should be authenticated with their e-id (to prevent repeated voting) but the votes should also be anonymous. This is achieved using blind signatures and an onion routing system similar to the one used in TOR. In the paper we describe the anonymous voting protocol in detail, we analyze a reference implementation and, finally, we highlight potential weaknesses and propose some improvements.