Efficient semi-static secure broadcast encryption scheme

Authors

Jongkil Kim, University of WollongongFollow
Willy Susilo, University of WollongongFollow
Man Ho Allen Au, University of WollongongFollow
Jennifer Seberry, University of WollongongFollow

RIS ID

84357

Publication Details

Kim, J., Susilo, W., Au, M. & Seberry, J. (2014). Efficient semi-static secure broadcast encryption scheme. Lecture Notes in Computer Science, 8365 62-76.

Abstract

In this paper, we propose a semi-static secure broadcast encryption scheme with constant-sized private keys and ciphertexts. Our result improves the semi-static secure broadcast encryption scheme introduced by Gentry and Waters. Specifically, we reduce the private key and ciphertext size by half. By applying the generic transformation proposed by Gentry and Waters, our scheme also achieves adaptive security. Finally, we present an improved implementation idea which can reduce the ciphertext size in the aforementioned generic transformation.