Codemaster: secrets of making and breaking codes
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.
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abcdefghi jklmnopqrstuvwxyz ABCDEFGHIJKLM BASIC characters cipher alphabet cipher system ciphercharacter ciphertext code machines codebreaker Codemaster codetext Codeword Plaintext column control key copy count cryptanalyst cryptogram CSRLIN DATA DE3REES AND THIRTEEN DEATHS HEAD decimal point decode digram EAST SIDE SHOOT EFGHIJKLMNOPQRSTUVWXYZ encipher encipher and decipher encipherment encoding EPROM ERROR GOTO FGHI JKLMNOPQRSTUVWXYZABCDE five-letter code groups frequency Goldbug GOTO 60 grille HOSTEL INPUT ENTER keynumber keyword KLMNOPQRSTUVWXYZABCDEFGHI KTWO letters LOCATE manual method micromicros NOPQRSTUVWXYZABCDEFGHIJKLM NORTH EAST nulls numbers pair PEEK(X plaintext words PLNTXT Polyalphabetic Cipher polyalphabetical preceeds PRINT WAIT product cipher QRSTUVWXYZABCDEFGHIJKLMNOP QWERTY rebel shave tomca RETRN ROMEO sent shave tomca trequ signals square root substitution cipher Substitution Systems symbols T(EETH(O?3H THE SHOT TANGO targeted receiver THRO?3H THE SHOT tomca trequ iredo Transposition ciphers TREE THRO?3H trigrams TUVWXYZABCDEFGHI JKLMNOPQRS users virtually unbreakable WXYZABCDEFGHI JKLMNOPQRSTUV XRAYS Y/Z go YALTA