Mysten Labs said Sui has completed its first native quantum-resistant Devnet transaction. According to ChainCatcher, the Devnet update added ML-DSA-65 account signatures, allowing accounts to authorize transactions directly with the post-quantum scheme.

Sui also plans to introduce hash-based SLH-DSA-SHA2-128s for high-value vaults in Move smart contracts. The two schemes are based on lattice and hash mathematical problems, and a weakness in one would not affect the other.

Because Sui keys are deterministically derived from a seed, users can migrate to quantum-resistant keys with existing seed phrases. Address aliases already live on the network also allow accounts to update authorization keys without moving assets.

The quantum-resistant account rollout will be optional and incremental, following the launch path used for zkLogin and passkeys. Sui said quantum-resistant vaults are targeted to go live on mainnet this year, native ML-DSA-65 accounts are targeted for testnet by year-end, and native account authentication on mainnet is targeted for Q1 2027, subject to independent audits and testnet feedback.