A Special ID-based Proxy Signature Scheme from Bilinear Pairings

In the (t, n) threshold proxy signature, the signing key is distributed to members of a signature group, and at least t proxy signers can cooperatively generate the signature. This makes proxy signature more secure. If we combine the IDbased cryptography system and threshold proxy signature, user´s public key contains his identification information. Hence, we don´t need certificate awarded by CA. The article introduces an ID-based threshold signature scheme which is based on bilinear pairings. The results of analysis show that the scheme not only satisfies security properties, but also has the property of anonymity.