A Novel Approach to E-Voting With Group Identity-Based Identification and Homomorphic Encryption Scheme

• Published in: IEEE access Vol. 12; pp. 162825 - 162843
• Main Authors: Vangujar, Apurva K., Ganesh, Buvana, Umrani, Alia, Palmieri, Paolo
• Format: Journal Article
• Language: English
• Published: Piscataway IEEE 2024; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: discrete logarithmic assumption; distributed ElGamal; e-voting; Electronic voting; ElGamal; Encryption; group identity-based identification; Homomorphic encryption; Identity-based identification; Privacy; Protocols; Public key; Security; Voters; Voting
• ISSN: 2169-3536; 2169-3536
• DOI: 10.1109/ACCESS.2024.3408670

This article presents a novel e-voting scheme that combines Group Identity-based Identification (GIBI) with Homomorphic Encryption (HE) based on the discrete logarithmic assumption. The proposed scheme uses the Schnorr-like GIBI scheme for voter identification and authorization using zero-knowledge proofs to ensure the anonymity and eligibility of voters. The voter <inline-formula> <tex-math notation="LaTeX">\textsf {v}_{i,j} </tex-math></inline-formula> is granted the authorization to cast a valid vote for a single candidate <inline-formula> <tex-math notation="LaTeX">\textsf {C}_{k} </tex-math></inline-formula>. The use of distributed ElGamal provides fairness while the use of partial shares for decryption enables individual and universal verifiability without the need for a central authority. The proposed scheme is secure under various scenarios and robust in the random oracle model. The GIBI-HE scheme offers a promising solution for e-voting, providing a sustainable and accessible environment for voters while supporting the unreusability of votes and protecting the privacy of voters.