This project will focus on fundamental research in coding theory and cryptology at an advanced international level. Project topics will be analysis and construction of symmetric and asymmetric cryptographic algorithms and protocols; and analysis and desig n of error correcting codes and of their decoding algorithms. In particular we will use our knowledge involving deep techniques from coding theory on cryptological problems where these techniques may improve upon the current state-of-the-art. The researc h will be carried out at the Selmer Center at the University of Bergen. The research group at the Selmer Center has been doing research in coding and cryptology for more than three decades and consists presently of 20 researchers, doctoral students, and f requent international visitors.