Mysten reports Sui’s first native quantum-safe devnet transaction

Mysten Labs says Sui has processed its first native quantum-safe transaction on its development network. The milestone arrived with devnet-v1.82.0, which shipped as protocol version 139 on October 12, 2026. That release adds ML-DSA-65 as a native account signature type. Mainnet support is targeted for Q1 2027, but only if audits and testnet feedback cooperate. What actually changed on devnet Sui’s codebase now includes a new entry, SignatureScheme::MLDSA65 = 7, which registers the post-quantum scheme alongside the network’s existing signature options. ML-DSA-65 is standardized by NIST under FIPS 204 and rated at Level 3 security. Sui intends it for everyday native accounts, the ordinary wallets people use to send tokens and interact with apps. For high-value Move smart contract vaults, Sui is reaching for a different tool: SLH-DSA-SHA2-128s. Both schemes are NIST-approved and come from distinct mathematical families, meaning a weakness discovered in one family would not automatically compromise the other. The user experience pitch Adoption of post-quantum accounts is opt-in. Users can keep their existing 32-byte seeds and recovery phrases rather than starting from scratch. Addresse...