WANG Ze-hui. Improvement on the XTP public key cryptosystem and communication protocol of provable security[J]. 2007, (1): 22-27.DOI:
XTR公钥密制的改进及可证明安全通信协议
摘要
提出一种新的迹函数
将基于3阶LFSR序列的XTR公钥密码体制(称之为XTR3体制)
改进为基于4阶LFSR序列的XTR4公钥密码体制。与XTR3体制比较
同等安全程度下XTR4的密钥长度小于XTR3。提出XTR4体制上的密钥交换协议
可证明安全性保密通信协议
一次一密协议
可以应用于多种环境
既能保证安全性
又能显著地提高运算效率。
Abstract
A new trace function was proposed
the XTP public key cryptosystem based on the 3-rd order LFSR se-quence(the so-called XTR3 system) was extended to the XTR4 system based on the 4-th order LFSR sequence.XTR4 key was shorter in length than that of the XTR3 system under the same security level.Based on the XTR4 cryptosystem
the key exchange protocol
communication protocol of provable security
and one-time-pad protocol were proposed
which could be employed in variant environments to assure the security