Sui will add two post-quantum signature schemes to support quantum-safe accounts and contracts, enabling users to opt into quantum-resistant keys derived from existing recovery phrases.

Sui announces the adoption of two post-quantum signatures to boost quantum readiness for the blockchain, with wallets, SDKs, and CLI support lined up for rollout.

The upgrade is designed to prepare mainnet for a quantum era by introducing quantum-resistant signatures that protect user accounts and vaults without requiring moves of addresses or assets.

The update does not alter consensus or existing state, and current services require no immediate changes.

Sui emphasizes user convenience and minimal friction, noting deposits and addresses stay the same while security enhancements run in the background.

Wallet, SDK, and CLI support will accompany rollout, with independent audits underway and transparency around evolving timelines.

Post-quantum keys (ML-DSA-65) are larger than Ed25519, increasing transaction size, but verification remains near Ed25519 efficiency to keep network costs manageable.

Sui provides background material and official contact information for further details and stresses that this is not investment advice.

Users retain recovery phrases and addresses; migration is cryptographic agility-based, with existing accounts able to update authorization keys via address aliases without moving funds.

Upgrades can be completed without forced migrations or costly transfers, as the new derivation path preserves seed phrases while updating authorization keys to post-quantum equivalents.

Users will deterministically transition to quantum-safe keys from their existing seed phrases, and address aliases enable updating authorization keys without asset transfers.

ML-DSA-65 will serve as the native protocol signature for everyday transactions on native accounts, representing Level 3 security and influencing key management and device support.