BNB Chain Highlights Data Overhead in Post-Quantum Cryptography Trial

BNB Chain has released a report outlining the results of a post-quantum cryptography upgrade experiment conducted on the BSC network. The trial implemented ML-DSA-44 for transaction signatures and pqSTARK for aggregating consensus votes.

While the upgrade was designed to remain fully compatible with existing infrastructure—including wallets, addresses, RPCs, and SDKs—the results showed notable performance trade-offs. In particular, signature sizes expanded significantly from 65 bytes to 2,420 bytes, and cross-region transaction throughput declined by roughly 40%.

Overall, the report indicates that although the migration approach is technically feasible, improvements in both network and data-layer scalability will be necessary before any potential production rollout.

Source: BNB Chain