Pointcheval-Stern signature algorithm

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Pointcheval-Stern signature algortihm is a digital signature scheme based on the closely related ElGamal scheme. It changes the ElGamal scheme slightly to produce an algorithm which has been proven secure in a strong sense against adaptive chosen-plaintext attacks. [1]

David Pointcheval and Jacques Stern developed the forking lemma technique in constructing their proof for this algorithm. It has been used in other security investigations of various cryptographic algorithms.

References

  1. D Pointcheval and J Stern. Security proofs for signature schemes. in U Maurer, ed. Adv in Crypt -- Eurocrypt '96, 387-398, Springer-Verlag, 1996. Lect Notes in Comp Sci, nr 1070; and D Pointcheval and J Stern, Security arguments for digital signatures and blind signatures, J Crypt 13(3):361-396, 2000.