The blockchain ecosystem is moving swiftly to counter future threats posed by quantum computing, and the latest developments are underscored by a new report from the BNB Chain research division. This report reveals critical findings on network performance as Binance Smart Chain (BSC) tests quantum-resistant cryptographic upgrades. Simulations and system modifications designed to ensure BSC’s security in a post-quantum era provide a glimpse into how the chain may adapt to emerging technology risks.
New quantum-proof signatures reshape the network
According to the report, BNB Chain has experimented with ML-DSA-44, a next-generation quantum-resistant digital signature scheme, alongside pqSTARK, an innovative batch signature technology. While there is no immediate threat from quantum attacks today, these measures are part of BSC’s broader plan to migrate from conventional encryption algorithms, like ECDSA and BLS, to more robust, future-proof cryptography.
Currently, signature data within blockchain transactions remain compact. However, the move to ML-DSA-44 causes a dramatic increase in signature size. Whereas a typical BSC transaction signature stands at just 110 bytes, the new protocol expands this to about 2.5 kilobytes. Average block size also surges, moving from 130 KB to nearly 2 MB.
This data expansion has a marked impact on overall network performance. Testing indicates that dispersing these large blocks throughout the network significantly slows dissemination, reducing the blockchain’s throughput by an estimated 40 to 50 percent. Cross-region transaction confirmations experience additional delays, especially during peak periods.
Main bottleneck revealed: data propagation, not consensus
Researchers note that the principal constraint is not with BSC’s consensus mechanism, but with the increased volume of data that must be distributed across the network. While pqSTARK offers approximately 43-fold compression of signature data, the ballooning transaction and block sizes compound the total network load. In effect, although security advances, network efficiency demands even greater resources.
The report highlights, “The primary performance loss stemmed not from consensus algorithms themselves but from the network’s struggle to circulate much larger data volumes efficiently.”
Security priorities drive innovation and preparedness
BNB Chain’s preference for ML-DSA-44 centers on a balance between sufficient security, signature compactness, and practical verification speed compared to cryptographic alternatives. This tradeoff is designed to keep blockchains catering to high transaction volumes operating smoothly, even as signature algorithms evolve.
Developers unanimously emphasize that, for the moment, quantum computers cannot practically break the encryption used by major blockchains like Bitcoin and BSC, pointing out that ordinary users face no immediate threat. The overarching ambition is to get the industry ready now, ensuring technological resilience once quantum threats turn real.
Yet, the report’s findings make clear that blockchains may require fundamental updates to handle larger data loads and maintain scalability in the long term. As the industry pivots to post-quantum cryptographic standards, sustaining live network performance will demand innovative solutions.
