Public key schemes with receiver selective-opening security and revocable identity-based encryption are discussed. Topic 1: Constructions Secure against Receiver Selective Opening and Chosen Ciphertext Attacks Authors: Dingding Jia, Xianhui Lu and Bao Li Topic 2: New Revocable IBE in Prime-Order Groups: Adaptively Secure, Decryption Key Exposure Resistant, and with Short Public Parameters Authors: Yohei Watanabe, Keita Emura and Jae Hong Seo