%0 Journal Article
%T Attack on Digital Multi-Signature Scheme Based on Elliptic Curve Cryptosystem
%A Duo Liu
%A Ping Luo
%A Yi-Qi Dai
%A <br>Duo Liu
%A Ping Luo
%A and Yi-Qi Dai
%J 计算机科学技术学报
%D 2007
%I 
%X The concept of multisignature, in which multiple signers can cooperate to sign the same message and any verifier can verify the validity of the multi-signature, was first introduced by Itakura and Nakamura. Several multisignature schemes have been proposed since. Chen et at proposed a new digital multi-signature scheme based on the elliptic curve cryptosystem recently. In this paper, we show that their scheme is insecure, for it is vulnerable to the so-called active attacks, such as the substitution of a "false" public key to a "true" one in a key directory or during transmission. And then the attacker can sign a legal signature which other users have signed and forge a signature himself which can be accepted by the verifier.
%K digital signature
%K multi-signature
%K elliptic curve
%K cryptography<br>密码系统
%K 安全
%K 数据管理
%K 计算机
%K 代入
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=F57FEF5FAEE544283F43708D560ABF1B&aid=CBCDFFE5AEBDB1BF3B069880D506CB8B&yid=A732AF04DDA03BB3&vid=BC12EA701C895178&iid=CA4FD0336C81A37A&sid=08805F9252973BA4&eid=BB0EA31DB1B01173&journal_id=1000-9000&journal_name=计算机科学技术学报&referenced_num=0&reference_num=12