Security improved threshold group-signature schemes with privilege subsets
Zhibin Li · Computer Engineering and Applications Journal · 2007
The security of scheme called a group of threshold group-signature schemes with privilege subsets is analyzed and the error in designing is found.An amending scheme is proposed,in which the error is corrected and the ability to trace signers is enhanced by adding identity identification function.The security of the new scheme is analyzed which proves the scheme is secure.