ID-based threshold proxy signature scheme from pairings

Abstract

(t,n) threshold proxy signature allows the original signer delegates his signing capability to a group of n proxy signers such that any t or more proxy signers can sign messages on behalf of the original, but t-1 or less of them cannot. Many (t,n) threshold proxy signature schemes have been proposed under traditional public key infrastructure. In this paper, we propose an ID-based threshold proxy signature is just one. Our scheme is more efficient than it about computations. And we show this scheme satisfies all security requirements in the random oracle.