Identity-Based Key-Insulated Proxy Signature Without Random Oracles  

作　　者：陈剑洪 龙宇 陈克非 王永涛 

机构地区：[1]Department of Computer Science and Engineering, Shanghai Jiaotong University [2]School of Computer Engineering, Huaiyin Institute of Technology [3]Shanghai Key Laboratory of Scalable Computing and System, Shanghai Jiaotong University

出　　处：《Journal of Shanghai Jiaotong university(Science)》2011年第5期557-566,共10页上海交通大学学报（英文版）

基　　金：the National Natural Science Foundation of China (Nos. 60970111, 60903189 and 60903020);the National High Technology Research and Development Program (863) of China (No. 2009AA01Z418);the National Basic Research Program (973) of China (No. 2007CB311201)

摘　　要：In an identity based proxy signature (IBPS) scheme, a designated proxy signer can generate the signature on behalf of an original signer. Traditional IBPS schemes normally rely on the assumption that private keys are kept perfectly secure. However, due to viruses, worms or other break-ins allowed by operating-system holes, key exposure seems inevitable. To minimize the damage caused by key exposure in IBPS, we propose an identity-based key-insulated proxy signature (IBKIPS) scheme in the standard model, i.e. without random oracles.In an identity based proxy signature （IBPS） scheme, a designated proxy signer can generate the signature on behalf of an original signer. Traditional IBPS schemes normally rely on the assumption that private keys are kept perfectly secure. However, due to viruses, worms or other break-ins allowed by operating-system holes, key exposure seems inevitable. To minimize the damage caused by key exposure in IBPS, we propose an identity-based key-insulated proxy signature （IBKIPS） scheme in the standard model, i.e. without random oracles.

关 键 词：KEY-INSULATED proxy signature IDENTITY-BASED standard model 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]