Sonic Unveils Quantum-Resistant Roadmap: Upgradable by Simply Replacing Signature Algorithms

Odaily News: Sonic detailed its technical path for the "post-quantum era," pointing out that most current PoS public chains rely on elliptic curve signatures (such as ECDSA, Ed25519), which face the risk of being cracked once quantum computing (e.g., Shor's algorithm) matures.

Sonic stated that the industry is exploring quantum-resistant cryptographic solutions (such as hash-based XMSS, SPHINCS+, and lattice-based Dilithium, Falcon). However, mainstream consensus mechanisms generally rely on BLS aggregate signatures and threshold signatures, and migrating to a quantum-resistant system will face challenges in performance, bandwidth, and architectural restructuring.

In contrast, Sonic's SonicCS consensus protocol does not rely on aggregate signatures or global randomness. It uses single-node signatures and hash functions to construct a DAG structure. Therefore, when switching to quantum-resistant cryptography, only the signature algorithm needs to be replaced to complete the upgrade, without adjusting the consensus logic or network structure.

Sonic emphasized that this design will significantly reduce the complexity of future migration to quantum-resistant security, giving the network stronger adaptability when quantum computing threats emerge.