Security of predicate encryptions and difficulty of factorization are discussed.
Topic 1: Construction of Fully CCA Secure Predicate Encryptions from Pair Encoding Schemes
Authors: Johannes Blömer and Gennadij Liske
Topic 2: Factoring N=p^r q^s for Large r and s
Authors: Jean-Sebastien Coron, Jean-Charles Faugere, Guenael Renault and Rina Zeitoun