Unbiasable Verifiable Random Functions

ePrint Report: Unbiasable Verifiable Random Functions

Emanuele Giunta, Alistair Stewart

Verifiable Random Functions (VRFs) play a pivotal role in Proof of Stake (PoS) blockchain due to their applications in secret leader election protocols. However, the original definition by Micali, Rabin and Vadhan is by itself insufficient for such applications. The primary concern is that adversaries may craft VRF key pairs with skewed output distribution, allowing them to unfairly increase their winning chances.


To address this issue David, Gaži, Kiayias and …

adversaries applications blockchain definition election eprint report functions leader may play pos proof protocols random report role secret stake