A Lattice Based Public Key Cryptosystem Using Polynomial Representations

  • Authors:
  • Seong-Hun Paeng;Bae Eun Jung;Kil-Chan Ha

  • Affiliations:
  • -;-;-

  • Venue:
  • PKC '03 Proceedings of the 6th International Workshop on Theory and Practice in Public Key Cryptography: Public Key Cryptography
  • Year:
  • 2003

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Abstract

In Crypto 97, a public key cryptosystem based on the closest vector problem was suggested by Goldreich, Goldwasser and Halevi [4]. In this paper, we propose a public key cryptosystem applying representations of polynomials to the GGH encryption scheme. Its key size is much smaller than the GGH system so that it is a quite practical and efficient lattice based cryptosystem.