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Threshold ring signatures (TRS) allow several signers to sign the same message on behalf of a group. This scheme is fully anonymity in that a signature reveals the number of signers who created the signature but tells nothing about the identity of ...

With the goal of ensuring availability of security services such as encryption and authentication, we initiate the study of leakage-resilient threshold cryptography, for achieving formal security guarantee under various key-exposure attacks. A ...

In this paper, we present the notion and construction of threshold ring signature without random oracles. This is the first scheme in the literature that is proven secure in the standard model. Our scheme extends the Shacham-Waters signature from PKC ...