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Efficient Key Encapsulation to Multiple Parties

  • N. P. Smart
Part of the Lecture Notes in Computer Science book series (LNCS, volume 3352)

Abstract

We present the notion of an mKEM, which is a Key Encapsulation Mechanism (KEM) which takes multiple public keys as input. This has applications where one wishes to encrypt a single large document to a set of multiple recipients, as when one sends an encrypted email to more than one person. We present a security definition and show that the naive approach to implementing an mKEM is secure under this definition. We then go on to present a more efficient construction of an mKEM, which is secure in the random oracle model.

Keywords

Random Oracle Security Parameter Random Oracle Model Multiple Party Decryption Oracle 
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 2005

Authors and Affiliations

  • N. P. Smart
    • 1
  1. 1.Dept. Computer ScienceUniversity of BristolBristolUnited Kingdom

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