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An Attack on the Isomorphisms of Polynomials Problem with One Secret
Authors: Willi Geiselmann, Willi Meier, Rainer SteinwandtAbstract:
At EUROCRYPT '96 J. Patarin introduced the “Isomorphisms of
Polynomials (IP)” problem as a basis of authentication and signature
schemes. We describe an attack on the secret key of “IP with one
secret” and demonstrate its efficiency through examples with realistic
parameter sizes. To prevent our attack, additional restrictions on the
suggested parameters should be imposed.
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