olemus
ElGamali signatuuri variant (D. Pointcheval, J. Stern, 1996), mis
on valitava sõnumiga adaptiivründe suhtes tõestatavalt leidvõltsimatu
= a variant of ElGamal signature that is provably existentially unforgeable against an adaptive chosen-message attack

ülevaateid
https://en.wikipedia.org/wiki/Pointcheval%E2%80%93Stern_signature_algorithm

https://www.di.ens.fr/david.pointcheval/Documents/Papers/2000_joc.pdf

https://delfr.com/monero/pointcheval-stern-generic-signature-scheme-monero-part-2-10/