Efficient Identity-Based Key Encapsulation to Multiple Parties

  • M. Barbosa
  • P. Farshim
Conference paper

DOI: 10.1007/11586821_28

Part of the Lecture Notes in Computer Science book series (LNCS, volume 3796)
Cite this paper as:
Barbosa M., Farshim P. (2005) Efficient Identity-Based Key Encapsulation to Multiple Parties. In: Smart N.P. (eds) Cryptography and Coding. Cryptography and Coding 2005. Lecture Notes in Computer Science, vol 3796. Springer, Berlin, Heidelberg

Abstract

We introduce the concept of identity based key encapsulation to multiple parties (mID-KEM), and define a security model for it. This concept is the identity based analogue of public key KEM to multiple parties. We also analyse possible mID-KEM constructions, and propose an efficient scheme based on bilinear pairings. We prove our scheme secure in the random oracle model under the Gap Bilinear Diffie-Hellman assumption.

Keywords

Key Encapsulation Mechanism (KEM) Hybrid Encryption Identity Based Cryptography Provable Security 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2005

Authors and Affiliations

  • M. Barbosa
    • 1
  • P. Farshim
    • 2
  1. 1.Departamento de InformáticaUniversidade do MinhoBragaPortugal
  2. 2.Department of Computer ScienceUniversity of BristolBristolUnited Kingdom

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