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公钥密码安全强度刻画概述
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Journal Article
公钥密码安全强度刻画概述
2023
Overview
安全强度是对密码方案安全性的量化指标,代表了攻破某密码方案所需的计算开销.公钥密码方案的安全强度与构建该方案所依赖的困难问题和具体的参数有关.随着后量子密码学的发展,原先单一的安全强度评估标准产生了变化和扩充.因此,系统性总结数论体系下的经典公钥密码和抗量子攻击的后量子公钥密码的安全强度具有重要意义.本文首先介绍了经典公钥密码和后量子公钥密码的安全强度定义.然后给出了一些经典公钥密码方案的安全强度和后量子公钥密码方案的安全强度级别.接着从常见密码方案的现实应用出发,介绍若干在商用安全服务中使用的公钥密码方案及其安全强度分析.最后,给出本文的总结,并根据目前公钥密码安全性研究和应用的不足,对未来的研究和应用提出了展望.
Publisher
Chinese Association for Cryptologic Research, Journal of Cryptologic Research
Subject
