一类具有三方见证能力的HILL密码体系  

A kind of HILL Cryptosystem with Tripartite Witness Capacity

作　　者：严深海[1] 黄贤通[1] 

机构地区：[1]赣南师范学院数学与计算机科学学院,江西赣州341000

出　　处：《广西民族大学学报（自然科学版）》2013年第1期58-61,共4页Journal of Guangxi Minzu University ：Natural Science Edition

基　　金：国家科技支撑计划课题(2009BAI78B02);江西自然科学基金资助项目(2009GZS0004)

摘　　要：通过求解有限域中的逆二次特征问题,设计了一类具有三方见证能力的HILL密码体系(Q-HILL),该密码体系动态构造密钥矩阵,增强了安全性,通信双方参与构造密钥矩阵,增强了不可抵赖性,组织者参与且见证构造密钥矩阵,增强了不可伪造性.数值实验说明了该密码体系的可行性,且算法简练,便于固化为硬件,可重复使用,能适应现代密码体制的需求.A new kind of HILL Cryptosystem with tripartite witness capacity is designed by solving the quadratic inverse eigenvalue problem in Galois field. The numerical experiments demonstrate it feasible. In the cryptosystem, dynamically constructed key matrix enhances communication security , it constructed by both communicating parties enhance the non-repudiation, and organizers participating in and witnessing the construction of key matrix enhance the unforgeability. The cryptosystem algorithm is concise, easy cure for hardware to reuse. The Q-HILL cryptosystem can meet modern cryptosystem＇s requirement.

关 键 词：有限域 逆二次特征问题 三方见证 HILL密码体系 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]