Concurrent signature without random oracles

Abstract

Concurrent signatures provide a way to exchange digital signature among parties in an efficient and fair manner. To the best of our knowledge, all the existing solutions can only be proven secure in the random oracle model. How to build an efficient concurrent signature scheme in the standard model has remained as an open problem since its introduction in… (More)
DOI: 10.1016/j.tcs.2014.09.044

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