Gate News message, April 24 — Sonic, a proof-of-stake blockchain protocol, is restructuring its architecture to address potential security risks posed by quantum computing advances, according to a report shared on April 20. The project’s redesigned system aims to enable smoother adaptation to post-quantum cryptographic standards while maintaining current network efficiency.
Blockchain networks currently rely on elliptic-curve cryptography, including widely used systems like the Elliptic Curve Digital Signature Algorithm and Ed25519, to secure transactions. However, researchers have highlighted that these systems could become vulnerable if quantum computing capabilities advance significantly. Specifically, Shor’s algorithm could theoretically enable attackers to derive private keys from publicly available data, compromising blockchain integrity.
Sonic’s approach diverges from traditional proof-of-stake models by eliminating reliance on signature aggregation techniques such as Boneh–Lynn–Shacham. Many established networks use these techniques to combine validator approvals into a single compact proof, but they depend on cryptographic assumptions vulnerable to quantum advancements. Instead, Sonic utilizes a directed acyclic graph (DAG) structure where each transaction carries its own individual signature and references prior events through cryptographic hashes. This design minimizes cryptographic assumptions while enabling modular transition to post-quantum signature schemes without redesigning the entire consensus mechanism.
Sonic’s strategy reflects a broader industry trend toward quantum readiness. While practical quantum attacks remain largely theoretical, blockchain developers are increasingly preparing for long-term resilience as digital assets gain adoption and integration into financial systems. The protocol’s flexible architecture demonstrates how blockchain networks can prepare for future cryptographic challenges while maintaining current performance standards.
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