<正>The original online version of this article(Journal of Electronics(China),Vol.25,No.3,May 2008,pp.384–388;DOI:10.1007/s11767-006-0282-3)unfortunately conta
In a proxy blind signature scheme,the proxy signer is allowed to generate a blind signature on behalf of the original signer. The proxy blind signature scheme i
To compensate the service providers who have paid billions of dollars to use spectrum and to satisfy secondary users' requirements in cognitive radios, a No