Chapter 5

Question 1

The process of transforming readable data (plaintext/cleartext) into an unreadable form (ciphertext)

Answer 1

Encryption

Question 2

Readable Data

Answer 2

Plaintext/Cleartext

Question 3

Unreadable Data

Answer 3

Ciphertext

Question 4

The science of protecting the confidentiality and integrity of data

Answer 4

Cryptography

Question 5

The process of recovering the plaintext message from the ciphertext

Answer 5

Decryption

Question 6

A password that you can apply to the algorithm to retrieve a message

Answer 6

Key

Question 7

Testing every possible key to retrieve the original message

Answer 7

Brute Forcing

Question 8

An unbreakable cipher when used properly

Answer 8

One-Time Pad

Question 9

Uses the same mechanism as the Caesar Cipher, but moves each letter 13 places forwards and is a more recent cipher.

Answer 9

ROT13

Question 10

An example of ancient cryptography based on transposition and involving the shifting of each letter of the plaintext message but a certain number of letters, historically three

Answer 10

Caesar Cipher

Question 11

Uses a single key for both encryption of the plaintext and decryption of the ciphertext

Answer 11

Symmetric Key Cryptography

Question 12

The specifics of the process used to encrypt the plaintext or decrypt the ciphertext

Answer 12

Cryptography Algorithm

Question 13

The science of breaking through the encryption used to create ciphertext. Finding the weakness in the given algorithm.

Answer 13

Cryptoanalysis

Question 14

______________ corroborates (gives support to) the identity of an entity, whether it is the sender, the sender’s computer, some device, or some information

Answer 14

Authentication

Question 15

An algorithm used for cryptographic purposes

Answer 15

Cipher

Question 16

An encryption cipher that uses the same key to encrypt and decrypt

Answer 16

Symmetric Key Cryptography

Question 17

How many disks did the Jefferson Disk contain?

Answer 17

36

Question 18

Was used to secure German communication during WWII

Answer 18

Enigma

Question 19

Who created the enigma?

Answer 19

Arthur Scherbius

Question 20

aka Private Key Cryptography

Answer 20

Symmetric Key Crytography

Question 21

aka Public Key Cryptography

Answer 21

Asymmetric Key Cryptography

Question 22

Uses a two keys. A public Key to encrypt data and a Private Key to decrypt data.

Answer 22

Asymmetric Key Cryptography

Question 23

SSL

Answer 23

Secure Sockets Layer

Question 24

The rules that define communication between devices

Answer 24

Protocols

Question 25

ECC

Answer 25

Elliptic Curve Cryptography

Question 26

Uses short keys while maintaining a higher cryptography strength than many other types of algorithms

Answer 26

Elliptic Curve Cryptography

Question 27

Converts the plaintext into a largely unique and fixed-length value.

Answer 27

Hash Functions

Question 28

Allows you to sign a message so that others can detect any changes to the message after you've sent it

Answer 28

Digital Signature

Question 29

Links a public key to an individual by validating that the key belongs to the proper owner. Often used as a form of electronic identification for that person.

Answer 29

Digital Certificate

Question 30

Takes a predetermined number of bits in the plaintext message and encrypts that block.

Answer 30

Block Cipher

Question 31

Encrypts each bit in the plaintext message one bit at a time

Answer 31

Stream Cipher

Question 32

Used to encrypt all our network traffic

Answer 32

Virtual Private Network

Question 33

Two main VPN methods used

Answer 33

Internet Protocol Security (IPsec) VPN Secure Sockets Layer (SSL) VPN

Question 34

Requires a more complex hardware configuration on the back end and a software client to be installed

Answer 34

Internet Protocol Security (IPsec) VPN

Question 35

Operated from a lightweight plug-in downloaded from a webpage and a less complex hardware configuration on the back end.

Answer 35

Secure Sockets Layer (SSL) VPN

Question 36

AES

Answer 36

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Question 37

RSA

Answer 37

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