BNB Chain: Quantum defense feasible but will cut throughput

BNB Chain has released the results of a test applying a next-generation signature method to BNB Smart Chain (BSC) to defend against quantum computer attacks. The team confirmed that it is possible to transition to a quantum-resistant signature algorithm certified by the U.S. National Institute of Standards and Technology (NIST). However, it noted that the new signature's data size is approximately 35 times larger than the current one, causing blocks to fill more quickly and reducing native transfer throughput by 40% to 50%. The consensus layer compresses data to about 1/43rd of its original size, keeping the burden on validators at a manageable level, BNB Chain explained. It added that while quantum computers are advancing, they are not yet capable of decrypting current cryptographic systems, describing the test as a preemptive measure for long-term preparedness.