Sui targets 2027 mainnet rollout for native quantum safe account authentication

Sui has added two NIST-approved post-quantum signature schemes to its blockchain roadmap as it prepares optional quantum-safe accounts and vaults for future network upgrades. Summary Sui plans to add two NIST approved post quantum signature schemes for accounts and smart contract vaults. Existing recovery phrases and wallet addresses can be retained when users move to quantum safe authentication. Quantum safe vaults are targeted for mainnet this year, with native accounts planned for testnet by the end of 2026. ML DSA 65 and SLH DSA are designed to protect different types of assets using separate cryptographic approaches. The announcement follows similar post quantum security work across Bitcoin custody, BNB Chain and other blockchain projects. According to Sui’s latest announcement, the blockchain plans to introduce ML-DSA-65 as a native signature scheme for regular accounts and SLH-DSA-SHA2-128s for high-value smart contract vaults, giving users an optional way to protect accounts against future quantum computing risks without replacing their recovery phrases or moving assets. Learn more: https://t.co/2BEGG4pr4d — Sui (@SuiNetwork) August 6, 2026 The rollout comes as blockchain developers and infrastructure providers increasingly prepare for the possibility that future quantum computers could break today’s public-key cryptography. Unlike traditional systems where public keys often remain hidden until needed, Sui said blockchain accounts expose public keys onchain once transactions occur, allowing attackers to collect them years before practical quantum computers exist. The network warned that such “harvest-now-forge-later” attacks do not require quantum hardware today because attackers can simply archive exposed public keys and wait until sufficiently capable machines become available. Citing research from Google Quantum AI published in March 2026, Sui said recovering a private key from an exposed public key could eventually take minutes on a fault-tolerant quantum computer using fewer than 500,000 physical qubits. Sui also pointed to changing government timelines around quantum security. The announcement noted that while the U.S. National Institute of Standards and Technology previously targeted 2030 to phase out classical cryptographic algorithms and 2035 to prohibit them, Executive Order 14412, signed in June 2026, requires U.S. federal agencies to deploy post-quantum key establishment by the end of 2030 and post-quantum digital signatures by the end of 2031 for sensitive systems. Sui has chosen two algorithms for different security needs Instead of relying on one post-quantum algorithm, Sui said it selected two standardized signature schemes built on different mathematical foundations so that a weakness discovered in one would not affect the other. For everyday user accounts, the blockchain will integrate ML-DSA-65, the Level 3 parameter set defined under NIST’s FIPS 204 standard, directly into the protocol.