Andreessen Horowitz (a16z) announced a new private, on-chain voting tool for Ethereum developers called “Cicada.”
In a blog post, a16z developer Michael Zhu acknowledged existing on-chain voting features but noted that many of those systems are fully public and transparent.
Running tally privacy
By offering private voting, Cicada addresses issues found in public voting, such as vote manipulation and improper voter incentivization.
Cicada specifically allows for running tally privacy, meaning it conceals the number of votes for each option until voting ends. This approach relies on time-lock puzzles, which conceal individual votes for a set amount of time, and homomorphic time-lock puzzles, which combine the other puzzles and conceal the overall tally.
Zhu said that Cicada could also be used for voter anonymity and ballot privacy with the addition of zero-knowledge group membership proofs.
Cicada is a Solidity library, meaning it is compatible with the programming language used in E
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