Chosen Ciphertext Secure Public Key Threshold Encryption Without Random Oracles

Authors: D. Boneh, X. Boyen, and S. Halevi

We present a non-interactive chosen ciphertext secure threshold encryption system. The proof of security is set in the standard model and does not use random oracles. Our construction uses the recent identity based encryption system of Boneh and Boyen and the chosen ciphertext secure construction of Canetti, Halevi, and Katz.

In proceedings of RSA-CT '06, LNCS 3860, pp. 226-243, 2006

Full paper: pdf         [first posted 10/2005 ]