Efficient Chosen-Ciphertext Secure Identity-Based Encryption with Wildcards
James Birkett, Alexander W. Dent, Gregory Neven, Jacob C. N. Schuldt · 2006
Abstract. We propose new instantiations of chosen-ciphertext secure identitybased encryption schemes with wildcards (WIBE). Our schemes outperform all existing alternatives in terms of efficiency as well as security. We achieve these results by extending the hybrid encryption (KEM–DEM) framework to the case of WIBE schemes. We propose and prove secure one generic construction in the random oracle model, and one direct construction in the standard model. 1