WGU D334 Final Exam Notes On
Cryptography Techniques And
Concepts With Complete
Solutions 2026/2027 Update
100% Pass
Email me for more info:
,● Bifid cipher
○ Matches letters into numeric values
● Playfair
○ (5x5 matrix)
○ Uses a secret phrase
○ Letters cannot repeat in the grid
○ J is not included
● Homophonic Substitution Cipher
○ Replaces plaintext with multiple possible cipher texts
● Caesar cipher
○ 3 letter shift
,● Scrambled Alphabet
○ Maps to a random letter
○ Cracked with frequency analysis
● Vigenere Cipher/ Polyalphabetic
○ One to many cipher alphabets (same plaintext character is likely to be
coded to different mappings)
○ Cracked using Kasiski examination to determine the key length
○ Popular method is to use agreed upon code word
● Kasiski = examination breaks the vigenere/polyalphabetic cipher
● Fractionated Morse Cipher
, ○ 26 character key mapping
○ Converts plain text into morse code, into fixed length chunks, then
converted to into cipher text letters.
● Pig Pen
○ Mono- alphabetic substitution cipher that makes use of mapping plaintext
characters to graphical characters rather than to alphabetic ones.
■ i.e. A=(pick a symbol), vs A=(pick a letter).
○ Once the mapping is known is hard to keep a secret
● Rail code
○ Scrambles plaintext known as the (Rail Fence Cipher)
● Permutations
○ Arrangement of objects in a specific order, re ordering objects
Cryptography Techniques And
Concepts With Complete
Solutions 2026/2027 Update
100% Pass
Email me for more info:
,● Bifid cipher
○ Matches letters into numeric values
● Playfair
○ (5x5 matrix)
○ Uses a secret phrase
○ Letters cannot repeat in the grid
○ J is not included
● Homophonic Substitution Cipher
○ Replaces plaintext with multiple possible cipher texts
● Caesar cipher
○ 3 letter shift
,● Scrambled Alphabet
○ Maps to a random letter
○ Cracked with frequency analysis
● Vigenere Cipher/ Polyalphabetic
○ One to many cipher alphabets (same plaintext character is likely to be
coded to different mappings)
○ Cracked using Kasiski examination to determine the key length
○ Popular method is to use agreed upon code word
● Kasiski = examination breaks the vigenere/polyalphabetic cipher
● Fractionated Morse Cipher
, ○ 26 character key mapping
○ Converts plain text into morse code, into fixed length chunks, then
converted to into cipher text letters.
● Pig Pen
○ Mono- alphabetic substitution cipher that makes use of mapping plaintext
characters to graphical characters rather than to alphabetic ones.
■ i.e. A=(pick a symbol), vs A=(pick a letter).
○ Once the mapping is known is hard to keep a secret
● Rail code
○ Scrambles plaintext known as the (Rail Fence Cipher)
● Permutations
○ Arrangement of objects in a specific order, re ordering objects
