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In "cryptography, the Pointcheval–Stern signature algorithm is a "digital signature scheme based on the closely related "ElGamal signature scheme. It changes the ElGamal scheme slightly to produce an algorithm which has been proven secure in a strong sense against "adaptive chosen-message attacks, assuming the "discrete logarithm problem is intractable in a strong sense.[1][2]

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[edit]

  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
  2. ^ Pointcheval, David; Stern, Jacques (2000). "Security Arguments for Digital Signatures and Blind Signatures" (PDF). Cryptology. 13 (3): 361–396. 
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