摘要
为了促进抗量子密码方案的实用化,在Mostafa Esmaeili方案的基础上,利用Polar码的极化性质改进抗量子密码方案,把信息比特作为原方案中的明文,把冻结比特作为原方案中的随机比特串。改进后的方案没有改变原方案的结构,可以抵御目前已知的信息集译码攻击,达到了IND-CPA(indistinguishability chosen ciphertext attacks)安全。选择合理的参数,使得改进方案的整体密钥尺寸比McEliece的整体密钥尺寸减少了70%,提高了方案的实用性,为即将来临的5G时代提供了一种新型抗量子密码方案。
To make post-quantum cryptography practical,based on the Mostafa Esmaeili cryptosystem,a post-quantum cryptography using the polarization properties of Polar code was improved,and the information bit was taken as the plaintext in the original scheme and the frozen bit as the random bit string in the original scheme.The proposed cryptosystem does not change the structure of the original scheme,can resist the known information set decoding attacks,and the cryptosystem has indistinguishability against chosen plaintext attacks.The overall key size of the improved scheme was reduce by 70%by selecting reasonable parameters and the practicability of the scheme was improved.Result provides a new post-quantum cryptography for the coming 5G era.
作者
李喆
韩益亮
李鱼
LI Zhe;HAN Yi-liang;LI Yu(College of Cryptographic Engineering,Engineering University of PAP,Xi an 710086,China)
出处
《科学技术与工程》
北大核心
2020年第13期5198-5204,共7页
Science Technology and Engineering
基金
国家自然科学基金(61572521)
武警工程大学科研创新团队科学基金(KYTD201805)。
