cryptography and network security

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

An encryption algorithm transforms plain text into:

• Cipher text

• Simple Text

• Empty Text

• Plain Text

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

• secret

• cipher

• key

• none of the mentioned

The art and science of breaking the cipher text is known as

• Cryptanalysis

• Cryptography

• Staganography

• Watermarking

A method for determining a solution to a problem by sequentially testing all possible solutions.

• brute force

• relative frequency

• cipher

• paired keys

What is encryption?

• When you put data / text into code making it difficult to read or understand.
• A secret or disguised way of writing; a code.
• A formal language designed to communicate instructions to a machine
• What is put in, taken in, or operated on by any process or system.

Tags

CCSS.RI.9-10.4

CCSS.RI.9-10.4

CCSS.RI.11-12.4

CCSS.RI.7.4

CCSS.RI.8.4

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.9-10.4

CCSS.RI.9-10.4

CCSS.RI.11-12.4

CCSS.RI.7.4

CCSS.RI.8.4

The process of converting a ciphertext into plaintext.

• encryption

• decryption

• plaintext

• cryptography

When a single plaintext letter is encoded by a single ciphertext letter repeated throughout the sentence it is a:

• Monoalphabetic Cipher

• Polyalphabetic Cipher

Cipher based on substitution, using multiple substitution alphabets is called:

• Polyalphabetic cipher

• Monoalphabetic cipher

• Polycipher

• Monocipher