Sonic releases anti-quantum roadmap, upgrade can be completed by simply replacing the signature algorithm

Sonic elaborates on its technological path towards the "post-quantum era," pointing out that most current PoS public chains rely on elliptic curve signatures (such as ECDSA, Ed25519), which are at risk of being cracked once quantum computing (like Shor's algorithm) matures.

Sonic states that the industry is exploring post-quantum cryptographic solutions (such as hash-based XMSS, SPHINCS+, and lattice-based Dilithium, Falcon), but mainstream consensus mechanisms generally rely on BLS aggregate signatures and threshold signatures, making the transition to post-quantum systems face challenges in performance, bandwidth, and architectural reconstruction. In contrast, Sonic's SonicCS consensus protocol does not rely on aggregate signatures or global randomness, but instead uses single-node signatures and hash functions to construct a DAG structure. Therefore, when switching to post-quantum cryptography, only the signature algorithm needs to be replaced to complete the upgrade, without the need to adjust the consensus logic or network structure. Sonic emphasizes that this design will significantly reduce the complexity of future migrations to post-quantum security, enabling the network to have stronger adaptability when quantum computing threats arise.