Mono-Alphabet Substitution Flashcards
These algorithms simply sub one character of cipher text for each character of plain text
Caesar Cipher
Every letter is shifted a fixed number of spaces to the left or the right
Plain Text
Text you wish to see
Cipher Text
Text that obfuscates plain text. Text that is the outcome of encryption.
Atbash Cipher
Hebrew code that substitute the first letter of the alphabet with the laster letter and Vis Versa. A becomes Z, B becomes Y etc.
Affine Cipher
Each letter in the alphabet is mapped to some numeric value, permuted with some relatively simple mathematical function, then converted back to a letter.
Formula is: ax + b (mod M)
ROT13 Cipher
All numbers are rotated 13 characters in the alphabet.
Scytale
Produces encrypted text by wrapping letters on parchment around a rod of the same diameter. The key is that the rod needs to be the same size to produce the same layout.