Synopses & Reviews
"Those who delight in puzzles can find much to ponder on here," declared Science News Letter of this excellent introduction to cryptography. Concise and simple explanations cover transposition and substitution ciphers, codes, and their solutions. More than 150 problems provide practical applications as well as tests of ingenuity.
Elementary account of ciphers, history, types, etc., with 151 examples of ciphers and codes. Solutions. Good introduction for beginners.
Excellent introduction features concise and simple explanations that cover transposition and substitution ciphers, codes, and their solutions. More than 150 problems provide practical applications as well as tests of ingenuity.
Table of Contents
I. Secret Weapon No. One
II. The History of Secret Writing
III. Transposition Ciphers
IV. Substitution Ciphers
V. Codes Compared with Ciphers
Informal Substitution Ciphers
Formal Substitution Ciphers
a. Some notes on the enciphering of Japanese
b. The Baconian biliteral cipher
c. Frequency tables