題名: Cryptanalysis and Improvement of Nyberg and Rueppel’s Identity-based Public Key Systems
作者: Tzong-Sun Wu;Chien-Lung Hsu;Shu-Hui Kao1;Yue Feng Huang
貢獻者: Department of Information Management, Huafan University;Department of information Management, National Taiwan University of Science Technology;Chunghwa Telecom Co., Ltd.
關鍵詞: message recovery signature scheme;identity-based;cryptanalysis 日期: 2002-05-16
上傳時間: 2009-12-08T07:38:20Z 出版者: 亞洲大學
摘要: In 1996, Nyberg and Rueppel designed new identity-based public key systems based on message recovery signature schemes. These schemes satisfy the property that the public key with respect to a registered user can be recovered from the correct combination of the user’s name and identity-based certificate. In this paper, however,the authors pointed out that Nyberg and Rueppel’s identity-based public key systems are
vulnerable to the impersonation attack. Furthermore, we proposed improvements to eliminate this security leak.