The Diffie–Hellman Protocol

  • Authors:
  • Ueli M. Maurer;Stefan Wolf

  • Affiliations:
  • Computer Science Department, Swiss Federal Institute of Technology (ETH Zürich), CH-8092 Zürich, Switzerland;Computer Science Department, Swiss Federal Institute of Technology (ETH Zürich), CH-8092 Zürich, Switzerland

  • Venue:
  • Designs, Codes and Cryptography - Special issue on towards a quarter-century of public key cryptography
  • Year:
  • 2000

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Abstract

The1976 seminal paper of Diffie and Hellman is a landmark in thehistory of cryptography. They introduced the fundamental conceptsof a trapdoor one-way function, a public-key cryptosystem, anda digital signature scheme. Moreover, they presented a protocol,the so-called Diffie–Hellman protocol, allowing two partieswho share no secret information initially, to generate a mutualsecret key. This paper summarizes the present knowledge on thesecurity of this protocol.