Date: 2009/3/5 (Thu) 15F30`17F00

      Place: Collaboration Room #7 (Information Science Building, 5th floor)

      Name: Goichiro Hanaoka
          AIST, RCIS, Researcher

      Title: Methodologies for Constructing CCA-Secure PKE schemes

      Abstract: Chosen ciphertext secure (CCA-secure) public key encryption is considered as one of most important building blocks for providing secure and practical communication systems. In this talk, we review existing methodologies for constructing CCA-secure schemes, and give an observation which explains the essential idea for achieving CCA-security. We also introduce the Hanaoka-Kurosawa public key encryption scheme (Asiacrypt'08) which was designed based on this observation.