Provably Secure Self-Certified Signature Schemes with Message Recovery

查看全文 作　　者：Zhang Shengyuan Tang Fei Lin Changlu Ke [1]Pinhui 机构地区：[1]Key Laboratory of Network Security and Cryptology, Fujian Normal University, Fuzhou 350108, P. R. China 出　　处：《China Communications》索引2012年第9卷第10期,共8页 基　　金：This research was supported partially by the National Natural Science Foundation of China under Grants No. 61103247, No. 6110209; the Natural Science Foundation of Fujian Province under Grant No. 2011J05147; the Research Foundation of Education Bureau of Fujian Province under Grant No. JBll017; the Foundation for Excellent Young Teachers of Fujian Normal University under Grant No. fjsdjk2012049. 摘　　要：To solve the key escrow problem of the identity-based cryptosystem, Girault introduced the notion of a self-certified public key, which not only eliminates the need to authenticate a public key but also solves the key escrow problem. This paper proposes a Self-Certified Signature (SCS) scheme with message recovery and two variants without using bilinear pairings: one is the authenticated encryption scheme in which only the designated receiver can verify the signature, and the other is the authenticated encryption scheme with message linkage that deals with large messages. These three SCS schemes are provably secure in the random oracle model and are more efficient than previous schemes. 关 键 词：可证明安全 消息恢复 签名方案 认证 身份验证 随机预言模型 加密方案 双线性配对