A Study Of Single Secret Leader Election Protocol Constructions For Robust Proof Of Stake Consensus

Date

2025-8-26

Author

Fettuh, Tegrid

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As blockchains move from energy intensive Proof-of-Work to more sustainable Proof-of-Stake (PoS), scalable and secure leader election protocols, which is key to PoS systems, have become a major focus. Single Secret Leader Election (SSLE) protocols improve efficiency and security by choosing a single leader and keeping their identity secret until the block proposal. This paper reviews key SSLE protocols, discussing their core ideas, features, and trade-offs. Building on these selection primitives, we propose a validator-driven deployment model for SSLE-based enabling a fair, verifiable, and user-friendly lotteries. We introduce and analyze four lottery frameworks, where each method is then evaluated, followed by a comparison of SSLE-based lotteries with existing blockchain-based lottery schemes, highlighting improvements in public verifiability, fairness, and resistance to forgery. Finally, we address the issue of withholding attacks by adapting SSLE protocols to satisfy strong accountability, ensuring that leaders who fail to publish their blocks can be detected and penalized.

Subject Keywords

Proof-of-Stake (PoS), Cryptographic Protocols, Single Secret Leader Election (SSLE), Blockchain, Consensus, Blockchain-based lotteries, Decentralization, Leader Election

URI

https://hdl.handle.net/11511/115589

Collections

Graduate School of Applied Mathematics, Thesis