encryption

Question 1

what is encrypted data called?

Answer 1

ciphertext

Question 2

pigpen cypher

Answer 2

tic-tac-toe cipher - exchanges letters for symbols

Question 3

rail fence cipher

Answer 3

zig-zag cipher - transportation cipher
rails are called keys
e.g.
HELLO
H   L   O
   E    L
ciphertext : HLOEL
(has a key of 2 because there are two 'rails')

Question 4

ceasar cipher

Answer 4

named after Julius Ceasar

the letters of the alphabet are shifted a set number of places