On the Impossibility of Three-Move Blind Signature Schemes

  title={On the Impossibility of Three-Move Blind Signature Schemes},
  author={Marc Fischlin and Dominique Schr{\"o}der},
We investigate the possibility to prove security of the well-known blind signature schemes by Chaum, and by Pointcheval and Stern in the standard model, i.e., without random oracles. We subsume these schemes under a more general class of blind signature schemes and show that finding security proofs for these schemes via black-box reductions in the standard model is hard. Technically, our result deploys meta-reduction techniques showing that black-box reductions for such schemes could be turned… CONTINUE READING