Efficient Identity-Based Key Encapsulation to Multiple PartiesManuel Barbosa, Pooya Farshim, Efficient Identity-Based Key Encapsulation to Multiple Parties. Cryptography and Coding. ISBN 978-3-540-30276-6, pp. 428–441. November 2005. PDF, 201 Kbytes. External information
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.