Strengthening McEliece Cryptosystem

  • Pierre Loidreau
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 1976)


McEliece cryptosystem is a public-key cryptosystem based on error-correcting codes. It constitutes one of the few alternatives to cryptosystems relying on number theory. We present a modification of the McEliece cryptosystem which strengthens its security without increasing the size of the public key. We show that it is possible to use some properties of the automorphism groups of the codes to build decodable patterns of large weight errors. This greatly strengthens the system against the decoding attacks.

Copyright information

© Springer-Verlag Berlin Heidelberg 2000

Authors and Affiliations

  • Pierre Loidreau
    • 1
  1. 1.Project CODESINRIA Rocquencourt Research UnitLe Chesnay - CedexFrance

Personalised recommendations