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Sponsored by the Center for Science and Technology Development of the Ministry of Education
Supervised by Ministry of Education of the People's Republic of China
A strong multiple designated verifiers signature (SMDVS) enables a signer to convince a set ofverifiers by generating one signature, of which the verification needs the private key of averifier. After a brief survey of the current SMDVS schemes, there are noschemes suitable to the broadcast propagation, where the simulation needs only one verifier's private key.Motivated by this discovery, this paper proposes a broadcast SMDVS scheme.The new scheme is proven secure in the random oracle model.
Keywords:designated verifiers signatures; asymmetric group key agreement protocol; signature scheme of Schnorr; broadcast propagation