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WorksheetsCryptography Methods Quiz
Total questions: 30
Worksheet time: 15mins
There are a number of different cryptography methods that range in complexity, but it is always important to add a layer of encryption to your private data. Which of the following are ways to encrypt your own private data?
Using strong passwords
Setting up and using 2-factor authentication
Only clicking on links that are sent through email
Safe web browsing
Using the same password for every site or app
The word “DOG” encrypted with the Caesar cipher with a key of 5 is (a) .
An encryption method that uses a series of interwoven Caesar ciphers based on the letters of a keyword is called
hashing
the Vigenère Cipher
the symmetric key
public key encryption
Encrypted information is only viewable by authorized users who have the correct key to decrypt. This describes which aspect of the CIA triad?
Integrity
Confidentiality
Availability
Collisions
What is the term used in cryptography for the message after encryption?
algorithm
ciphertext
key
plaintext
Using the Caesar cipher, “HELLO” is encrypted to “OLSSV” by applying a shift of 7. The message “HELLO” is considered the __________.
algorithm
ciphertext
key
plaintext
Using the Caesar cipher, “HELLO” is encrypted to “OLSSV” by applying a shift of 7. The number 7 is considered the (a) .
What is the term used in cryptography when the same key is used to encrypt and decrypt the data?
Asymmetric Encryption
Substitution Cipher
Reflexive Encryption
Symmetric Encryption
Roland knew that the code to his sister’s toy safe was only two digits long. He was able to crack the safe open by attempting every two-digit code until he found the correct one. What method of code-breaking did Roland use?
Frequency analysis
Brute force
Frequency distribution
Using a dictionary
Marsha found her sister’s diary that listed all of her passwords. However, when Marsha entered the passwords into their corresponding websites, none of them worked. She determined that her sister must have encrypted her passwords. In an attempt to decrypt the passwords, Marsha tallied the number of times each letter appeared. What method of code-breaking did Marsha use?
Rainbow table
Brute force
Using a dictionary
Letter frequency analysis
The resulting ciphertext when the word DAN is encrypted using the Caesar cipher along with the key of 3 is (a) .
Which set of letters spells a valid word when decrypted using the Caesar cipher with a key of 2?
HJG
TWP
XPY
PLC
Which statement is true about the Vigenère cipher?
The Vigenère cipher uses complex mathematical algorithms to encrypt messages.
You can use letter frequency analysis to crack a message encrypted with a Vigenère cipher.
The Vigenère cipher is easier to crack than the Caesar cipher.
The Vigenère cipher utilizes more than one shift value dependent on a keyword.
What is the ciphertext that results from encrypting the word LET using the Vigenère cipher along with the keyword, CAB?
MFU
JES
NGV
NEU
True or False? You can strengthen the encryption of a Caesar cipher by shifting the letters twice (using two keys).
True
False
What is encryption?
A person who tricks you into giving your password
converting information or data into a code to prevent unauthorized access.
To upload your personal data to the cloud
When there is a security breach in your data
What does Encryption Mean?
That data can no longer be read without the key
That data is secure
That data has been lost
That data is changed
The act of securing and protecting individuals, businesses, organizations, and governments that are connected to the Internet and the Web.
cybersecurity
cybercriminals
privacy policies
Social engineering
What must a user need to decrypt a file?
Coin
Key
Token
Graph
Which of the following is an example of symmetric encryption?
Vigenère cipher
RSA
Diffie-Hellman
Elliptic Curve
Which key is used to decrypt a message in asymmetric encryption?
Public key
Private key
Session key
Hash key
What is the main purpose of a cryptographic key?
To store passwords securely
To unlock encrypted information
To create user accounts
To generate random numbers
Which of the following best describes a brute-force attack?
Installing malware through email attachments
Tricking users into revealing information
Trying all possible combinations to guess a password
Intercepting data during transmission
You receive the encrypted message “JEENO” using the key “CAT”. What is the original message?
HELLO
APPPLE
WORLD
WATER
(a) is the process of taking the encrypted message and turning it back into plaintext.
What does the process of decryption accomplish?
It generates a cryptographic key
It converts plaintext into ciphertext
It verifies the sender's identity
It converts ciphertext back into readable data
Which of the following is NOT a type of cipher used in cryptography?
Caesar cipher
Vigenère cipher
Reflection cipher
Substitution cipher
Used in public key encryption, ____________________ Encryption is a scheme in which the key to encrypt data is different from the key to decrypt.
Private Key
Asymmetric
Public Key
Symmetric
Choose the answer that is NOT a feature of Public Key Cryptography:
Using public key guarantees that only the intended recipient can decrypt the message
A Public Key database ensures 3rd party accountability of security
Allows secure communication without establishing a *shared* encryption key ahead of time.
A key for decrypting is never made public
