# Sui (SUI) Quantum Readiness Report

> Sui has a QRI score of 16/100 and is assessed at Stage 2 (Mitigation / Development) with medium evidence confidence.

Evaluation date: 2026-08-16. Review status: draft. Evaluated scope: Sui base-layer network (native asset SUI, consensus, spend authorization, Move smart contracts, P2P, ZK proof layers).

Sui is a Layer 1 blockchain with strong cryptographic agility infrastructure but zero post-quantum protection in production as of August 16, 2026. All production cryptographic layers remain classical: user spend authorization uses Ed25519/ECDSA secp256k1/secp256r1, validator consensus uses BLS12-381 aggregated signatures in Mysticeti's batched design, P2P identity uses Ed25519, and zkLogin depends on Groth16 proofs over pairing-based curves (BN254/BLS12-381). On August 6, 2026, Sui announced integration of NIST-standardized ML-DSA-65 (FIPS 204) for native accounts and SLH-DSA-SHA2-128s (FIPS 205) for Move smart-contract vaults. The core implementation is described as 'built and benchmarked' with independent audits underway. Quantum-safe vaults are targeted for mainnet by end of 2026, and native ML-DSA-65 accounts for testnet by end of 2026 with mainnet in Q1 2027. An early mainnet 'set_vault_enabled' framework artifact was observed on Aug 6, 2026, but no material PQ-protected value exists. The project is at Stage 2 (Mitigation/Development): a credible roadmap and prototype exist with excellent architectural preparedness, but production users are not materially protected. QRI Score 16 reflects strong risk-assessment preparedness and sound algorithm selection offset by zero production cryptographic protection and negligible migration coverage. The consensus-layer BLS12-381 aggregation path and Groth16 ZK proof system represent significant architectural gaps with no published PQ replacement specifications.

## Core resources

- [Sui QRI report](https://qrindex.org/projects/sui/): Human-readable assessment with score, stage, evidence, blockers, risks, and assurance notes.
- [Sui structured report data](https://qrindex.org/projects/sui/report.json): Complete report as JSON for deterministic machine processing.
- [QRI methodology](https://qrindex.org/methodology/): Scoring model, evidence handling, readiness stages, confidence, assurance, and report status.
- [All QRI project reports](https://qrindex.org/llms.txt): Score-ranked index of every published project assessment.
- [Sui official website](https://www.coingecko.com/en/coins/sui): Project-maintained website.



## Evidence sources

- [Evidence source 1](<https://docs.sui.io/develop/cryptography/>): Public source cited by the Sui QRI assessment.
- [Evidence source 2](<https://www.sui.io/security>): Public source cited by the Sui QRI assessment.
- [Evidence source 3](<https://blog.sui.io/post-quantum-computing-cryptography-security/>): Public source cited by the Sui QRI assessment.
- [Evidence source 4](<https://github.com/MystenLabs/sui>): Public source cited by the Sui QRI assessment.
- [Evidence source 5](<https://github.com/MystenLabs/fastcrypto>): Public source cited by the Sui QRI assessment.
- [Evidence source 6](<https://docs.sui.io/concepts/cryptography/signatures>): Public source cited by the Sui QRI assessment.
- [Evidence source 7](<https://docs.sui.io/develop/transactions/transaction-auth/auth-overview>): Public source cited by the Sui QRI assessment.
- [Evidence source 8](<https://mystenlabs.com/blog/cryptography-in-sui>): Public source cited by the Sui QRI assessment.
- [Evidence source 9](<https://github.com/MystenLabs/sui/blob/main/docs/content/operators/validator/validator-tasks.mdx>): Public source cited by the Sui QRI assessment.
- [Evidence source 10](<https://www.sui.io/blog/making-sui-quantum-ready>): Public source cited by the Sui QRI assessment.
- [Evidence source 11](<https://hackenproof.com/programs/sui-protocol>): Public source cited by the Sui QRI assessment.