An Identity Based Encryption Scheme Based on Quadratic Residues

  • Authors:
  • Clifford Cocks

  • Affiliations:
  • -

  • Venue:
  • Proceedings of the 8th IMA International Conference on Cryptography and Coding
  • Year:
  • 2001

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Abstract

We present a novel public key cryptosystem in which the public key of a subscriber can be chosen to be a publicly known value, such as his identity. We discuss the security of the proposed scheme, and show that this is related to the difficulty of solving the quadratic residuosity problem.