Cryptography

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

_______ is the science and art of transforming messages to make them secure and immune to attacks.

• Cryptography

• Cryptoanalysis

• neither Cryptography nor Cryptoanalysis

• either Cryptography or Cryptoanalysis

Tags

CCSS.RI.11-12.4

CCSS.RI.9-10.4

CCSS.RI.9-10.4

CCSS.RI.8.4

CCSS.RI.7.4

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

• Encryption

• Decryption

Tags

CCSS.RI.7.4

CCSS.RI.8.4

CCSS.RI.6.4

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

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.8.4

CCSS.RI.11-12.4

CCSS.RI.7.4

What encryption algorithm uses the same pre-shared key to encrypt and decrypt data?

• hash

• one-time pad

• symmetric

• asymmetric

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

"letters" has been encrypted with Caesar cipher to "cvkkvij". The key used was:

• 16

• 14

• 18

• 17