Department of Computer Science and Engineering;
Shanghai Jiaotong University;
Shanghai 200240;
China;
Department of Mathematics;
College of Science;
Hohai University;
Nanjing 210098;
China;
Department of Computer Science;
Jinan University;
Guangzhou 510632;
China;
代理签名; 密钥绝缘; 签名方案; 随机存取; 签名者; 破坏性; amp; 身份证;