%0 Journal Article %A YANG Changhai %T Analysis and improvement of two certificateless proxy signature schemes %D 2011 %R %J Computer Engineering and Applications %P 101-103 %V 47 %N 15 %X This paper points out their shared defects by researching the security of the two recently-advanced certificateless proxy signature schemes.One is their irresistibility to impersonation attack against certificateless signature scheme II,that is,malicious-but-passive KGC can relegate the right to sign any message to any proxy signer by impersonating original signer,the other is the high likelihood of key-compromise of proxy signature.At last,the reasons for the success of impersonation attack have been analyzed and countermeasures against these attacks have been brought forward as well.
%U http://cea.ceaj.org/EN/abstract/article_26557.shtml