James Birkett Alexander W. Dent Gregory Neven Jacob C. N. Schuldt Efficient Chosen-Ciphertext Secure Identity-Based Encryption with Wildcards. 274-292 2007 conf/acisp/2007 ACISP http://dx.doi.org/10.1007/978-3-540-73458-1_21 db/conf/acisp/acisp2007.html#BirkettDNS07