This book constitutes the thoroughly refereed post-conference proceedings of the Second
International Conference on Information Theoretic Security ICITS 2007 held in Madrid Spain
in May 2007. The 13 revised full papers presented in this volume were carefully reviewed and
selected from 26 submissions. There were one invited keynote speech and 3 invited talks to the
conference. The topics covered are authentication group cryptography private and reliable
message transmission secret sharing and applications of information theory.
