Blockchain

Neo

Consensus: Quantum-Vulnerable
Why this rating. Judgment call: dBFT consensus nodes sign blocks with classical elliptic-curve keys. Open issue 4239 plans post-quantum research for Neo 4.0, with no chosen scheme or deployment path, and no activity since December 2025.
Transactions: Quantum-Vulnerable
Why this rating. Judgment call: accounts use secp256r1 ECDSA. Issue 4239 discusses Falcon and ML-DSA, but an ML-DSA-65 pull request (4307) was closed unmerged; merged PR 4291 added only SHA3 and Blake2b hashes. No scheme is chosen.
Algorithms: None listed
Website: Website
Source: Source
Note and links: Research issue only
N4 Post-Quantum Cryptography (issue 4239)
SHA3 and Blake2b hash support (PR 4291)

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