摘要
基于编码的公钥密码体制作为抗量子攻击密码理论的重要研究内容,具有加/解密复杂性低和安全性高的优异特性。针对Niederreiter公钥密码体制进行了研究,利用QC-LDPC码和双公钥的相关知识构造了一种新的Niederreiter加密方案。安全性分析表明,加密方案能抵抗常见攻击方法的同时满足随机预言机模型下的IND-CCA2安全。最后对方案的性能进行分析,较原有Niederreiter密码的公钥量减少63%和信息率提高47%的结论。
As an important research ofpost-quantum cryptography, code-based cryptography had excellent characteristics of low complexity and high security. With the code-based cryptosystem as the core knowledge ,we constructed a new QC-LDPC codes based Niederreiter cryptography scheme by using dual public-key. And the safety analysis shows that the new scheme not only resists the common method of attack, but also meets the IND-CCA2 security. The analysis of performance of the scheme is also given. We can get the conclusions that public key sizes reduce by 63% and the information rate increase by 47%.
出处
《计算机应用研究》
CSCD
北大核心
2016年第11期3446-3449,3454,共5页
Application Research of Computers
基金
国家自然科学基金资助项目(61572521)
陕西省自然科学基础研究计划项目(2015JM6353)
