1 - Bifid Cipher Playfaire Homophonic Cipher
 1 - Ceasar-Coding-Scrambled-Alphabet-Vigenere-Cipher
 2 - Ceasar Coding Scrambled Alphabet Vigenere Cipher
 3 - Morse Code Fractionated Morse Code Pig Pen Rail Code
 4 - Combinations Permutations SetTheory
 4 - Combinations-Permutations-Set-Theory
 5 - One Time Pad Data Hexadecimal
 6 - Data Integrity Reed Solomon
 7 - Huffman Coding Lemep Viz Welsh
 8 - Little Endian Big Endian
 9 - Integers Rationale Numbers Real Numbers Prime Numbers
 10 - Binary Math XOR OR And
 11 - Cryptography Cryptanalysis Cryptology Cleartext Ciphertext
 12 - Mod ShiftOperators Pseudo Random True Random
 13 - MonoAlphabetic Polyalphabetic
 14 - Enigma Machine Asymmetric Encryption Symmetric Encryption
 15 - Frequency analysis