This book constitutes the refereed proceedings of the Second International Workshop on Coding
and Cryptology IWCC 2009 held in Zhangjiajie China in June 2009. The 21 revised full
technical papers except one are contributed by the invited speakers of the workshop. The
papers were carefully selected during two rounds of reviewing and improvement for inclusion in
the volume and address all aspects of coding theory cryptology and related areas - such as
combinatorics - theoretical or applied. Topics addressed are coding theory secure codes hash
functions combinatorics boolean functions authentication cryptography protocols sequences
and secure communications.
