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Index Index

additive identity, Definition
additive inverse, Definition
affine cipher, Paragraph Definition
Agripa, Heinrich Cornelius, Paragraph
al-Kindi, Paragraph
Alberti, Leon Battista, Paragraph
Arabic scholar, Paragraph
ASCII, Paragraph
atabash, Exercise
autokey, Paragraph
Babbage, Charles, Paragraph
base 10, Definition
base 2, Definition
Baudot Code, Figure
bi-gram, Exercise
binary, Definition
bitwsie addition, Definition
block cipher, Item
byte, Item
cipher, Definition Item
shift cipher, Paragraph Item
ciphertext, Item Item
ciphertext space, Definition Item
code, Item
combination, Paragraph
crumb, Example
cryptanalysis, Definition Paragraph
cryptoanalysis, Item
cryptography, Item
cryptology, Item
decipher, Item
deciphering, Definition
decrypt, Paragraph Item
decrypting, Definition
determinant, Definition
divisibility, Definition
encipher, Paragraph Item
exclusive or, Definition Item
Falconer, John, Paragraph Paragraph
Feistel cipher, Subsection
formula (Alberti), Subsection
frequency analysis, Definition Item
Gilbert S. Vernam, Subsection
greatest common divisor, Item
Hill's cipher, Definition
homophonic, Item
homophonic cipher, Item
ibn ad-Durayhim, Paragraph
identity matrix, Definition
index of coincidence, Item
inverse matrix, Definition
ITA2 Code, Figure
Kasiski, Friedrich, Paragraph
key schedule, Paragraph
key space, Definition Item
keyword cipher, Exercise
Logical Circuits, Subsubsection
matrix, Definition
modular equivalence, Definition Item
monoalphabetic substitution cipher, Definition Exercise Item
Morse Code, Subsection
multiplicative identity, Definition Item
multiplicative inverse, Definition Item Item
n-gram, Item
nibble, Example
nomenclator, Item
null, Item
pangram, Paragraph
pangrams, Item
Perfect Secrecy, Subsubsection
perfect secrecy, Definition Theorem Item
permutation, Paragraph
pigpen cipher, Paragraph
plaintext, Item Item
plaintext space, Definition Item
polyalphabetic substitution cipher, Definition Item
polygraphic cipher, Paragraph Item
polyphonic cipher, Item
prime divisors, Assemblage
prime factor, Definition
prime number, Assemblage Item Definition
reciprocal, Item
relatively prime, Definition Item
shift cipher, Paragraph Item
solutions
as an appendix, Appendix
steganography, Item
stream cipher, Definition Item
substitution cipher, Item
Telegraph, Subsection
Teletype, Subsection
transposition cipher, Item
tri-gram, Exercise
Unicode, Paragraph
vector, Paragraph
Vigenère, Blaise de, Paragraph
zero divisor, Definition