Download or read book Codemaster written by Hamilton Nickels and published by . This book was released on 1990 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: This practical field manual is designed to teach combat and survival professionals, as well as hobbyists, the basic mechanics of enciphering and deciphering messages. Includes everything from the simplest paper-and-pencil ciphers to state-of-the-art computer systems used by governments and militaries.