%0 Journal Article
%T Cryptananlysis of a Proxy Blind Signature Scheme Based on DLP<br>对一个基于离散对数代理盲签名的密码分析
%A WANG Shu-Hong
%A WANG Gui-Lin
%A BAO Feng
%A WANG Jie
%A <br>王蜀洪
%A 王贵林
%A 鲍丰
%A 王杰
%J 软件学报
%D 2005
%I 
%X Proxy signature allows an original signer to delegate his/her signing capability to a proxy signer such that the proxy signer can sign messages on behalf of the original signer. Blind signature allows a user to have a given message signed by the signer without revealing any information about the message. By using Schnorr blind signature, Tan et al. recently proposed a digital proxy blind signature scheme. They claimed that it satisfies the security properties of both blind signatures and proxy signatures. However, it is not the fact. This paper shows that the proposed scheme is vulnerable to universal forgery as well as linkability attacks. It also explains why their proofs of the security are incorrect.
%K proxy signature
%K blind signature
%K universal forgery
%K linkability
%K cryptananlysis<br>代理签名
%K 盲签名
%K 广泛伪造
%K 可连接性
%K 密码分析
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=7735F413D429542E610B3D6AC0D5EC59&aid=07D2CF42D8029210&yid=2DD7160C83D0ACED&vid=7801E6FC5AE9020C&iid=94C357A881DFC066&sid=58AAF01A97187A3A&eid=BD77137A0285B6FF&journal_id=1000-9825&journal_name=软件学报&referenced_num=13&reference_num=12