Equivalent Goppa codes and trapdoors to McEliece's public key cryptosystem

  • Authors:
  • J. K. Gibson

  • Affiliations:
  • Department of Computer Science, Birkbeck College, London, England

  • Venue:
  • EUROCRYPT'91 Proceedings of the 10th annual international conference on Theory and application of cryptographic techniques
  • Year:
  • 1991

Quantified Score

Hi-index 0.00

Visualization

Abstract

We show that contrary to a published statement, any instance of McEliece's Public Key Cryptosystem always has many trapdoors. Our proof leads to a natural equivalence relation on monic polynomials over a finite field F such that any two irreducible Goppa codes over F whose Goppa polynomials are equivalent under this relation are equivalent as codes.