New ID-Based Universal Designated-Verifier Signature Scheme
Bo Qin · Dianzi xuebao · 2007
Designated verifier Signature schemes can be used to realize a new destination that a signer can choose a desired verifier to verify the availability of the signatures,which can prevent the abuse of spreading the signature.A new ID-based universal designated-verifier signature(ID-UDVS) scheme is proposed from bilinear pairings.The proposed scheme introduces two independent PKG to solve the hidden secure trouble that exists in existing ID-based universal designated-verifier signature scheme to a certain extent,in which the single PKG can impersonate the signers to forge their signatures.We also prove that our ID-UDVS scheme is secure in the sense of our un-forgeability and privacy notions for ID-UDVS schemes,under the GDH assumption and the random-oracle model.