AP CSP Unit4 Big Data & Cryptography

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.7.4

CCSS.RI.8.4

CCSS.RI.9-10.4

CCSS.RI.9-10.4

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

• Encryption

• Decryption

Tags

CCSS.RI.11-12.4

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 art and science of breaking the cipher text is known as

• Cryptanalysis

• Cryptography

• Staganography

• Watermarking

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.11-12.4

CCSS.RI.7.4

CCSS.RI.8.4

CCSS.RI.9-10.4

CCSS.RI.9-10.4

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.11-12.4

CCSS.RI.7.4

CCSS.RI.8.4

CCSS.RI.9-10.4

CCSS.RI.9-10.4

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