BSC’s quantum defense works. The trade-off is 40% slower transaction throughput.
CoinDesk
BNB Chain's post-quantum cryptography test successfully secured the network but resulted in a 40% reduction in transaction throughput due to larger signature sizes.Summary
BNB Chain (BSC) recently conducted a proof-of-concept test replacing its existing ECDSA and BLS12-381 cryptographic systems with quantum-resistant alternatives. While the upgrade effectively protected the network against potential future threats from quantum computers using Shor’s algorithm, it caused transaction throughput to drop by approximately 40%. The performance decline was primarily driven by the significant increase in data size for user transactions, which grew from roughly 110 bytes to 2.5 kilobytes, creating a network bottleneck. This experiment highlights the ongoing industry debate regarding the balance between quantum security and operational efficiency.
(Source：CoinDesk)