Certificateless Strong Key-Insulated Signature Without Random Oracles  

作　　者：万中美 孟祥芹 洪璇 

机构地区：[1]College of Science, Hohai University [2]Department of Computer Science, Shanghai Normal University

出　　处：《Journal of Shanghai Jiaotong university(Science)》2011年第5期571-576,共6页上海交通大学学报（英文版）

基　　金：the National Natural Science Foundation of China (Nos. 61003215, 61005049, 60903178 and 61103183);the Fundamental Research Funds for the Central Universities (No. 2010B09614);the Foundation of HoHai University (No. 2084/409265)

摘　　要：It is important to ensure the private key secure in cryptosystem. To reduce the underlying danger caused by the private key leakage, Dodis et al. (2003) introduced the notion of key-insulated security. To handle the private key leakage problems in certificateless signature schemes, we propose a new certificateless strong key-insulated signature scheme. Our scheme has two desirable properties. First, its security can be proved without utilizing the random oracle model. Second, it solves the key escrow problems in identity-based key-insulated signatures (IBKISs).It is important to ensure the private key secure in cryptosystem. To reduce the underlying danger caused by the private key leakage, Dodis et al. （2003） introduced the notion of key-insulated security. To handle the private key leakage problems in certificateless signature schemes, we propose a new certificateless strong key-insulated signature scheme. Our scheme has two desirable properties. First, its security can be proved without utilizing the random oracle model. Second, it solves the key escrow problems in identity-based key-insulated signatures （IBKISs）.

关 键 词：KEY-INSULATED key leakage CERTIFICATELESS bilinear pairings 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]