PointchevalStern signature algorithmFrom CryptoDox, The Online Encyclopedia on Cryptography and Information SecurityPointchevalStern 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 chosenplaintext 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
