سال انتشار: ۱۳۹۰
محل انتشار: نوزدهمین کنفرانس مهندسی برق ایران
تعداد صفحات: ۵
m beheshti atashgah – research center of intelligent signal processing tehran iran
m bayat –
m gardeshi – imam hossein university
m.r aref – information systems and security lab ISSL EE Department sharif university
In a t,n threshold proxy signature scheme the original signer can delegate the signing power /to n proxy singners such that any t or more out of n proxy singners can sign messages on behalf of the original signer but t -1 or less of the proxy signers cannot generate a proxy signature in this paper we will improve the security of xie’s threshold proxy signature scheme against the new types of collusion attack was presented by liu and tan in 2007 we also present that our improved scheme is more efficient than xie’s scheme in terms of computational complexities.