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Plaintext Awareness via Key Registration

  • Jonathan Herzog
  • Moses Liskov
  • Silvio Micali
Part of the Lecture Notes in Computer Science book series (LNCS, volume 2729)

Abstract

In this paper, we reconsider the notion of plaintext awareness. We present a new model for plaintext-aware encryption that is both natural and useful. We achieve plaintext-aware encryption without random oracles by using a third party. However, we do not need to trust the third party: even when the third party is dishonest, we still guarantee security against adaptive chosen ciphertext attacks. We show a construction that achieves this definition under general assumptions. We further motivate this achievement by showing an important and natural application: giving additional real-world meaningfulness to the Dolev-Yao model.

Keywords

Encryption Scheme Random Oracle Parse Tree Registration Authority Adaptive Choose Ciphertext Attack 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2003

Authors and Affiliations

  • Jonathan Herzog
    • 1
  • Moses Liskov
    • 1
  • Silvio Micali
    • 1
  1. 1.MIT Laboratory for Computer Science 

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