The ABC's of Cryptology Review

Encryption plays a crucial role in maintaining which part(s) of the CIA triad?

• Confidentiality

• Integrity and Aviailability

• Confidentiality and Availability

• Confidentiality and Integrity

Encrypted information is only viewable by authorized users who have the correct key to decrypt.

• Confidential

• Integrity

• Availability

• Security

To decrypt an encrypted message, pass the encrypted message and the _____ to the decrypt function.

• crytology

• decrypted message

• key

• ciphertext

The attacker knows that the Caesar cipher shifts each letter by a certain number, so they decide to try every possible key (shift) from 1 to 25.

• Frequency analysis

• Brute Force

• Frequency distribution

• Using a dictionary

Mason left his password screen open while passing out papers for class. Bryson sees this and changes the password locking Mason out of his Tictok. Bryson tells the class that Mason he encrypted the word "Password." Parker takes the Phone and unlocks it and then locks it again while telling Mason to figure it out on himself. What Method of code-breaking did Parker use?

• Rainbow Table

• Brute Force

• Using a dictionary

• Letter Frequency Analysis

What is the primary flaw with the Caesar Cipher and other substitution ciphers?

• It could not be applied to all messages

• With enough frequency, a message could be decryted

• It could only be used in English

• There were too many options when encrypting a message

What makes the Vigenère Cipher resistant to being cracked with brute force and letter frequency analysis?

• It uses a single fixed shift for all letters in the plaintext.

• It substitutes each letter with a number instead of a letter.

• It uses multiple shifts based on the keyword, making brute force and letter frequency analysis ineffective.

• It only encrypts vowels, leaving consonants unchanged.

Which set of letters spells a valid word when decrypted using the Caesar cipher with a key of 3?

• DOL

• KHO

• WRH

• CFR

Which of the following shows the word “MOUSE” encrypted with the Caesar cipher with a key of 6?

• PUICL

• SUAYK

• VCRTG

• SVAYK

What is the ciphertext that results from encrypting the word "FEIN" using the Vigenère cipher with the keyword "WORK"?

• JGLP

• CTHO

• GFKP

• ZWZR