Untitled Deck

Question 1

What is Decryption?

Answer 1

Changing secret message back to original form

Question 2

What is Plaintext?

Answer 2

Unencrypted data to be encrypted or is the output of decryption

Question 3

What is Ciphertext?

Answer 3

The scrambled and unreadable output of encryption

Question 4

What is a Pseudorandom number generator (PRNG)?

Answer 4

An algorithm for creating a sequence of numbers whose properties approximate those of a random number

Question 5

What is Diffusion?

Answer 5

If a single character of plaintext is changed then it should result in multiple characters of the ciphertext changing

Question 6

What is Confusion?

Answer 6

The key does not relate in a simple way to the ciphertext

Question 7

What is Confidentiality?

Answer 7

Ensures only authorized parties can view it

Question 8

What is Integrity?

Answer 8

Ensures information is correct and unaltered

Question 9

What is Authentication?

Answer 9

Ensures sender can be verified through cryptography

Question 10

What is Non-repudiation?

Answer 10

Proves that a user performed an action

Question 11

What is Obfuscation?

Answer 11

Making something obscure or unclear

Question 12

What is Security through obscurity?

Answer 12

An approach in security where virtually any system can be made secure as long as outsiders are unaware of it or how it functions

Question 13

What is Data-at-rest?

Answer 13

Data that is stored on electronic media

Question 14

What is Data-in-transit?

Answer 14

Actions that transmit the data across a network

Question 15

What is Data-in-use?

Answer 15

Data actions being performed by ‘endpoint devices’, such as printing a report from a desktop computer

Question 16

What are Low-power devices?

Answer 16

Small electronic devices that consume very small amounts of power

Question 17

What is Resource vs security constraint?

Answer 17

A limitation in providing strong cryptography due to the tug of war between available resources (time and energy) and the security provided by cryptography

Question 18

What is High Resiliency?

Answer 18

The ability to quickly recover from these resource vs. security constraints

Question 19

What is a Stream cipher?

Answer 19

Takes one character and replaces it with another

Question 20

What is a Block cipher?

Answer 20

Manipulates an entire block of plaintext at one time

Question 21

What is a Sponge function?

Answer 21

Takes as input a string of any length and returns a string of any requested variable length

Question 22

What is a Hash?

Answer 22

An algorithm that creates a unique digital fingerprint called a ‘digest’

Question 23

What is an Asymmetric Cryptographic Algorithm?

Answer 23

Cryptography that uses two mathematically related keys.

Question 24

What is a Symmetric cryptographic algorithm?

Answer 24

Encryption that uses a single key to encrypt and decrypt a message

Question 25

What is Fixed size in hashing?

Answer 25

Short and long data sets have the same size hash

Question 26

What does Unique mean in hashing?

Answer 26

Two different data sets cannot produce the same hash

Question 27

What does Original mean in hashing?

Answer 27

Data set cannot be created to have a predefined hash

Question 28

What does Secure mean in hashing?

Answer 28

Resulting hash cannot be reversed to determine original plaintext

Question 29

What is Message Digest 5 (MD5)?

Answer 29

A revision of MD4 that was designed to address MD4's weakness

Question 30

What is Secure Hash Algorithm (SHA)?

Answer 30

A secure hash algorithm that creates more secure hash values than Message Digest (MD) algorithms

Question 31

What is Cryptography?

Answer 31

Cryptography is scrambling information so it's not able to be read. It transforms information into secure form so unauthorized people can't access it.

Question 32

What is Steganography?

Answer 32

Hides the existence of data

Question 33

What is Encryption?

Answer 33

Changing original text into a secret message using cryptography

Question 34

What is Cleartext data?

Answer 34

Data stored or transmitted without encryption

Question 35

What is a Key in cryptography?

Answer 35

A mathematical value entered into the algorithm to produce ciphertext

Question 36

What is a Substitution cipher?

Answer 36

Substitutes one character for another

Question 37

What is an XOR cipher?

Answer 37

Based on the binary operation eXclusive OR that compares two bits