后量子密码迁移趋势下应用于区块链的公钥密码安全

Since the proposal of quantum algorithms that can efficiently solve the mathematical hard problems that today’s public-key cryptography relies on, research on post-quantum cryptography resisting against quantum computing attacks has begun, and standardization of these algorithms has been in process in the world. In order to ensure the security of existing information systems, it is inevitable to migrate to these new quantum-resistant public key cryptography schemes, which has great challenges and opportunities. Countries and regions such as the United States and the European Union have already initiated research in this migration process, indicating that research on post-quantum cryptography migration has become a trend. The security of blockchain relies on modern cryptography, especially public-key signature technology, so the migration is also necessary to achieve a long-term security of blockchain. This paper first introduces the post-quantum cryptography migration strategies, then proposes the engineering principle of post-quantum cryptography migration in terms of migration goals and migration process. After discussing the existing methodology of transition of public key cryptography used in blockchain according to this principle, some future research directions are proposed.