RANDAO-based RNG: Last Revealer Attacks in Ethereum 20 Randomness and a Potential Solution
<|reference_start|>RANDAO-based RNG: Last Revealer Attacks in Ethereum 20 Randomness and a Potential Solution: Ethereum 2.0 is a major upgrade to improve its scalability, throughput, and security. In this version, RANDAO is the scheme to randomly select the users who propose, confirm blocks, and get rewards. However, a vulnerability, referred to as the `Last Revealer Attack' (LRA), compromises the randomness of this scheme by introducing bias to the Random Number Generator (RNG) process. This vulnerability is first clarified again in this study. After that, we propose a Shamir's Secret Sharing (SSS)-based RANDAO scheme to mitigate the LRA. Through our analysis, the proposed method can prevent the LRA under favorable network conditions.<|reference_end|>
@article{son2024randao-based,
    title={RANDAO-based RNG: Last Revealer Attacks in Ethereum 2.0 Randomness and a
  Potential Solution},
    author={Do Hai Son and Tran Thi Thuy Quynh and Le Quang Minh},
    journal={arXiv preprint arXiv:2403.09541},
    year={2024},
    archivePrefix={arXiv},
    eprint={2403.09541},
    primaryClass={cs.CR}
}