,Cryptanalysis of Digital Signature with One-time Pair of Keys

• 作 者: WU Qiuxin YANG Yixian HU Zhengming
• 机 构: Information Security Center, Beijing University of Posts and Telecommunications, Beijing 100876, Chi
• 出 处: 中国电子杂志（英文版）
• 发表日期: 2001年3期
• 关键词: Digital signature Cryptanalysis Secure flaw.

It is proved that the digital signaturescheme with one-time pair of keys proposed by X. Yi etal. In Electronics Letters in 2000 is insecure, I.e. Theadversary can arbitrarily produce another valid sig-nature on the message, provided that he/she knows adata item of the signer’s certificate and a message’ssignature. A modified version of the scheme is pro-vided.