Sonic releases quantum-resistant approach: upgrade only requires replacing the signature algorithm.

Sonic detailed its technological path towards the "post-quantum era," pointing out that most current PoS public chains rely on elliptic curve signatures (such as ECDSA and Ed25519), which are vulnerable to being cracked once quantum computing (such as Shor's algorithm) matures. Sonic stated that the industry is exploring quantum-resistant cryptographic solutions (such as hash-based XMSS and SPHINCS+, and lattice-based Dilithium and Falcon), but mainstream consensus mechanisms generally rely on BLS aggregate signatures and threshold signatures. Migrating to quantum-resistant systems 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, using only 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 migrations to quantum-resistant security, making the network more adaptable to the threat of quantum computing.