The Rao-Nam Scheme is Insecure Against a Chosen-Plaintext Attack

  • Authors:
  • René Struik;Johan van Tilburg

  • Affiliations:
  • -;-

  • Venue:
  • CRYPTO '87 A Conference on the Theory and Applications of Cryptographic Techniques on Advances in Cryptology
  • Year:
  • 1987

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Abstract

The Rao-Nam scheme is discussed and generalized to Fq. It is shown that the scheme is insecure against a chosen-plaintext attack for practical code lengths. Based on observations an improved scheme is given, which is not vulnerable to the chosen-plaintext attacks as described.