Caesar Cipher

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

Tags

CCSS.RI.6.4

CCSS.RI.7.4

CCSS.RI.8.4

CCSS.RI.9-10.4

CCSS.RI.9-10.4

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

• DVSDULQV

• DOOFOHDU

• DOSKDEHW

• DORQHBHV

A Caesar cipher is an example of a ______________________.

• transposition cipher

• bimodal cipher

• substitution cipher

• substantial cipher

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

Tags

CCSS.L.1.5A

CCSS.L.1.5B

CCSS.L.K.5A

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

• Simple Text

• Plain Text

• Cipher Text

• Filled Text

An encryption algorithm transforms plain text into:

• Cipher text

• Simple Text

• Empty Text

• Plain Text

A(n) ______ algorithm transforms cipher text to plain text.

• Encryption

• Decryption

Tags

CCSS.RI.6.4

CCSS.RI.7.4

CCSS.RI.8.4

CCSS.RI.9-10.4

CCSS.RI.9-10.4

The _______ is a number or a set of numbers on which the cipher operates.

• secret

• cipher

• key

• none of the mentioned

The process of converting a ciphertext into plaintext.

• encryption

• decryption

• plaintext

• cryptography