Cryptographic Protocols Based on Discrete Logarithms in Real-quadratic Orders

  • Authors:
  • Ingrid Biehl;Johannes Buchmann;Christoph Thiel

  • Affiliations:
  • -;-;-

  • Venue:
  • CRYPTO '94 Proceedings of the 14th Annual International Cryptology Conference on Advances in Cryptology
  • Year:
  • 1994

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Abstract

We generalize and improve the schemes of [4]. We introduce analogues of exponentiation and discrete logarithms in the principle cycle of real quadratic orders. This enables us to implement many cryptographic protocols based on discrete logarithms, e.g. a variant of the signature scheme of ElGamal [8].