摘要
在分析了文献[1]中给出的基于伪随机数的比特承诺方案的基础上,讨论了针对该承诺方案的一种中间篡改攻击方式,并对原方案进行了改进.在保持原方案安全性的基础上,改进后的比特承诺方案引入了单向Hash变换,通过认证机制确保数据在传输过程中免遭这种中间篡改攻击.
Based on analyzing the scheme of bit commitment, which is provided on a pseudo-random generator , from the literature, This paper discuss a pattern of interaction attack which aims at the course of bit commitment,and provides a safe scheme based on the scheme of bit commitment. Holded the security of that scheme , the safe scheme imports one-way hash function and authentication , protects the datas from man-in-the-middle attack during the transmission course .
出处
《小型微型计算机系统》
CSCD
北大核心
2005年第11期1911-1912,共2页
Journal of Chinese Computer Systems
基金
国家自然科学基金(90104028)资助
国家海外杰出青年自然科学基金(69928201)资助
关键词
比特承诺
验证
中间攻击
Hash变换
bit commitment
reveal
man-in-the-middle attack
hash function
