✔REVERSE CIPHER
Types: Words
> two modes are available in this
code. First reverses the whole text,
second reverses letters word by word.
Example:
1st mode
1.) NEGYXO = OXYGEN
2.) YRANOITCID = DICTIONARY
3.)1ST: REKEES NOITNETTA =
ATTENTION SEEKER
4.)2nd: NOITNETTA REKEES =
ATTENTION SEEKER
✔PLAYFAIR
Type: Substitution
> playfair cipher uses an array of 5x5
containing a keyword or phrase. The
first step is to create a grid based on
the key. The second step is to encrypt
the letters of the message by selecting
them in pairs.
Key: melons
(Note: grid size is 5x5 and i/j can
interchange)
M|E|L|O|N
S|A|B|C|D
F|G|H|I |K
P|Q|R|T|U
V|W|X|Y|Z
Plaintext: VALENTINES
VA LE NT IN ES
Ciphertext: WSOLOUJOMA
WS OL OU JO MA
