Vitalik Posts Recommendation for "The Interfold": A Privacy Protocol Optimized for Scenarios Such as Voting and Secret Auctions

On May 28th, Ethereum co-founder Vitalik Buterin published a post endorsing the Interfold project—an implementation of the Minimal Anti-Collusion Infrastructure (MACI) concept he’s championed for nearly a decade. Buterin urged more people to learn about Interfold, noting it’s a privacy protocol optimized for use cases like voting and secret auctions, and underscoring its role in advancing this critical technology. He detailed Interfold’s core mechanisms: threshold key generation, on-chain vote submissions paired with ZKP qualification proofs, arbitrary computations via Fully Homomorphic Encryption (FHE) followed by threshold decryption. These deliver robust security guarantees: unconditional voter anonymity, Ethereum-level censorship resistance, and ZK over FHE to ensure result correctness. Current limitations include high costs for complex computations (e.g., multiplication), with only additive tallying fully mature. The team is actively working on optimizations like slashing-based techniques to address this gap. Long-term, Interfold aims to achieve obfuscation, which would eliminate reliance on M-of-N committees.