About this Book

"Along with a brief explanation of the workings of cipers and cryptanalysts, the computer program that accompanies this book provides a replacement for paper and pencil, which has always been a burdensome requirement in operating on ciphers. I think the tedium of a manual trial and error approach might tend to discourage a newcomer to the world of codes and ciphers. These computer programs take over that task and eliminate the tedium." -From foreword