后量子时代对称密码安全性研究

Research on Symmetric Cryptography Security in the Post-Quantum Era

本文主要探讨后量子时代对称密码算法面临的挑战,以及国内外量子电路优化的研究工作。后量子密码时代给信息安全行业带来了全新的挑战。现有商用密码系统的安全性基于算法复杂度与当前计算能力的不匹配来保证,然而Grover算法可以加速数据搜索过程,从而降低对称密钥算法的安全性。因此,我们需要准确评估Grover算法的攻击资源代价。同时,国内外也进行了大量的量子电路优化相关研究。早期的研究主要集中在减少量子比特的数量,但近年来开始考虑整体复杂度。控制量子比特仍然是一个瓶颈问题,因为大规模量子计算机需要大量物理量子比特和纠错码的冗余性。面对量子环境下的安全性问题,传统的密码算法可能会被破解,从而导致信息泄露和安全问题。采用新的加密技术需要更新已有的基础设施,这需要制定与实施统一标准,来为对称密码的抗量子安全性提供更精确的分析研究。

This article explores the challenges faced by symmetric cryptographic algorithms in the post-quantum era,as well as research on quantum circuit optimization both domestically and internationally.The post-quantum cryptography era presents new challenges for the information security industry.The security of existing commercial cryptographic systems is based on the mismatch between algorithm complexity and current computing power,but the Grover algorithm can accelerate data search processes,thereby reducing the security of symmetric key algorithms.Therefore,we need to accurately evaluate the attack resource cost of the Grover algorithm.Meanwhile,there has been a significant amount of research on quantum circuit optimization domestically and internationally.Early research primarily focused on reducing the number of qubits,but in recent years,overall complexity has also been taken into consideration.Controlling the use of qubits is still a bottleneck issue because large-scale quantum computers require a large number of physical qubits and redundant error-correcting codes.Traditional cryptographic algorithms may be broken in the face of security issues in the quantum environment,leading to information leakage and security issues.The use of new encryption technologies requires updates to existing infrastructure,which will require significant funds and time,as well as the establishment and implementation of uniform standards to provide more accurate analysis and research on the anti-quantum security of symmetric cryptography.