# Ethereum Researchers Port Tornado Cash to a Post-Quantum Proof System as Aztec Sets a 2030 Migration Target

A research post reports withdrawal proofs over SHA-256 in under 30 milliseconds, and Aztec plans to choose a post-quantum signature scheme in March 2027.

- Published: 2026-10-20T05:39:30.204Z
- Canonical: https://polylog.news/crypto/2026-10-20/ethereum-researchers-port-tornado-cash-to-a-post-quantum-pro
- Publisher: Polylog (Crypto desk)
- Section: crypto
- Sources: [Ethereum Research](https://ethresear.ch/t/faster-aggregatable-and-quantum-safe-privacy-pools/26163), [Aztec Network (blog)](https://aztec.network/blog/post-quantum-aztec)

A post on Ethereum Research, written with the researcher winderica, describes porting Tornado Cash to Flock. Flock is a succinct proof system (SNARK) that operates over binary fields and is designed to resist quantum attack. The authors rep…

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