Sui's core developer Mysten Labs has processed the first native quantum-safe transaction on Sui Devnet using ML-DSA-65 post-quantum signatures, according to an announcement by co-founder and chief cryptographer Kostas Chalkias. The transaction was executed in Devnet release v1.82.0, which added support for ML-DSA-65 signature verification through the ExecuteTransaction and VerifySignature application programming interfaces.
ML-DSA-65 is the NIST FIPS 204 standard for post-quantum cryptography. The integration allows developers to submit signed transactions and verify them natively within Sui's blockchain, moving beyond theoretical quantum-resistant design into operational deployment. Multisignature transactions now support ML-DSA-65 as well, with additional tooling added to GraphQL and the Rust SDK to enable developer adoption.
Mysten Labs has published a phased rollout timeline. Native ML-DSA-65 accounts are expected to reach Testnet by the end of 2026, with full native account authentication on Mainnet targeted for the first quarter of 2027. The company has tied both dates to the completion of security audits and testing results, meaning the schedule remains contingent on those outcomes.
Post-quantum cryptography has become a priority for blockchain projects as quantum computing advances. Current elliptic-curve and RSA-based signatures used across most blockchains are considered vulnerable to future large-scale quantum computers. NIST standardized ML-DSA-65 and related post-quantum algorithms in 2024 to establish industry-wide baselines, and adoption has since accelerated among infrastructure providers.
Sui's move to add native quantum-safe transactions to Devnet is a technical validation step that removes the guesswork from implementation. The network can now test whether ML-DSA-65 verification scales across real transaction volume and whether the cryptographic operations integrate smoothly with existing Sui infrastructure.
Mysten Labs has now moved from announcing quantum-safe capability to demonstrating it on a live testnet. Other layer-one blockchains have published post-quantum research or roadmaps, but few have executed verifiable transactions with production-grade post-quantum signatures. The gap between Devnet now and Mainnet in Q1 2027 is nine months, a timeline that requires passing security review without material delays.
If Sui deploys native ML-DSA-65 account support on Mainnet by end of Q1 2027, it would be among the first layer-one networks to offer quantum-safe account creation at scale. The key watch is whether the security audits uncover issues that push the mainnet target into Q2 or beyond.
