Sui Adds Post-Quantum Signatures to Devnet Ahead of 2027 Mainnet Plan

Sui has added native support for ML-DSA-65 signatures to its Devnet, giving developers a testing environment for post-quantum account authentication ahead of planned Testnet and mainnet deployment. MystenLabs released devnet-v1.82.0 on Oct. 12 under Sui protocol version 139. The update allows ML-DSA-65 signatures and multisig members to pass through transaction execution and signature verification. The release also adds MlDsa65Signature and MlDsa65PublicKey to Sui’s GraphQL interface and updates the Rust software development kit. The changes are limited to Devnet and do not alter authentication for existing mainnet accounts.

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