重加密匿名通道WGRe  

WGRe:a re-encryption anonymous tunnel

作　　者：陆天波[1] 秦宝山[2] 李洋[3] 丁丽[1] 

机构地区：[1]国家计算机网络应急技术处理协调中心,北京100029 [2]北京邮电大学,北京100876 [3]中国移动通信研究院,北京100053

出　　处：《通信学报》2009年第4期66-73,共8页Journal on Communications

基　　金：国家重点基础研究发展计划(“973”计划)基金资助项目(2007CB311100);国家高技术研究发展计划(“863”计划)基金资助项目(2007AA01Z446);国家自然科学基金资助项目(60873217)~~

摘　　要：发现了通用重加密及相关方案的脆弱性并设计了一个新的重加密方案WGRe。它能保证节点输出流的正确性并能够很好地抵抗重放攻击。与通用重加密及其扩展方案的4倍明文长相比,WGRe的密文长度仅仅是明文的2倍,提高了效率。The universal re-encryption scheme URE and its extension EURE were reviewed, discovering their vulnerabilities to Pfitzmann attack. Then a novel re-encryption scheme WGRe （WonGoo Re-encryption） was proposed. WGRe could ensure the correctness of the outputs from a node and protect against replay attack, which was hard in layered encryption systems. The experimental results show WGRe is practical and more efficient than URE and EURE schemes due to the fact that its ciphertext is only double the size of the corresponding plaintext, instead of four times as URE or EURE.

关 键 词：匿名通信 重加密 MIX 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]