Caesar Cipher

Convert "GJGB" cipher-text back into plain text using the key: 1

• FIFA

• HKHC

• EHEZ

• JMER

Tags

CCSS.L.K.5A

CCSS.L.1.5A

CCSS.L.1.5B

Convert "VOOVXF" cipher-text back into plain text using the key: -5 or +5

• ATTACK

• FYYFHP

• RETRET

• BARCA

Tags

CCSS.L.K.5A

CCSS.L.1.6

CCSS.L.3.6

Convert "OQQC" cipher-text back into plain text using the key: -10

• EGG

• MILK

• EGGS

• HAMS

Tags

CCSS.L.K.5A

CCSS.L.1.6

CCSS.L.3.6

"Bletchley Park" is plain text, what would be the cipher text with key of -10.

• Rbujsxbuo Fqhb

• Rhujsxbuo Fqha

• Rbujsxbuo Fqha

• Rrujsxbuo Fqha

"Manchester City FC" is plain text and the cipher text is: "Bpcrwthitg Rxin UR" - What would the encryption key be?

• +15

• -14

• +10

• +16

A cipher is _________________________.

• a person who makes up secret codes

• an algorithm that is used to scramble text so that it can be passed in secret

• a lock that can be used to lock a message in a lock box

• any puzzle, such as a crossword or Sudoku puzzle

Encrypt the word alphabet using a Caesar cipher with a shift of 3

• DVSDULQV

• DOOFOHDU

• DOSKDEHW

• DORQHBHV

The following word was encrypted using a Caesar cipher with a shift of 2: ecguct. What word is it?

• julius

• caesar

• romans

• cipher

Who was the first know user of the Caesar Cipher?

• Caesar Romanus

• Julius Caesar

• Alan Turing

• There isn't one

In Cryptography, original message, before being transformed, is called

• Simple Text

• Plain Text

• Cipher Text

• Filled Text