The Manga Guide to Cryptography breaks down how ciphers work, what makes them secure or insecure, and how to decode them.Comic illustrations make it easy to learn about classic substitution, polyalphabetic, and transposition ciphers; symmetric-key algorithms like block and DES (Data Encryption Standard) ciphers; how to use public key encryption technology to generate public/private keys and cryptograms; practical applications of encryption such as digital signatures, identity fraud countermeasures, and 'man in the middle' attack countermeasures.