A New Strong Multiple Designated Verifiers Signature for Broadcast Propagation

A strong multiple designated verifiers signature (SMDVS) enables a signer to convince a set of verifiers by generating one signature, of which the verification needs the private key of a verifier. After a brief survey of the current SMDVS schemes, we find no schemes suitable to the broadcast propagation, where the simulation needs only one verifier's private key. Motivated by this discovery, we propose a broadcast SMDVS scheme. The new scheme is proven secure in the random oracle model.