Commit-Reveal schema: bias via abort

[sambacha]

Bias via Abort

In the commit-then-reveal protocol each user chooses a secret and shares their commitment to the secret with other users. Later, users reveal their secrets and a random value is calculated by combining the secrets. This approach is susceptible to attacks where a user can choose not to reveal their secret to bias the randomness generation to their advantage "bias-via-abort"

Citation: E. Syta, P. Jovanovic, E. Kokoris-Kogias, N. Gailly, L. Gasser, I. Khoffi,
M. J. Fischer, and B. Ford. Scalable Bias-Resistant Distributed Randomness. In 38th IEEE Symposium on Security and Privacy, May 2017.