Deck 11: Basic Cryptography

Question 1

A hash that is created from a set of data can be reversed.

Answer 1

False

Question 2

In MD5, the length of a message is padded to ____ bits.

A) 32
B) 64
C) 128
D) 512

Answer 2

D

Question 3

____ ensures that the information is correct and no unauthorized person or malicious software has altered that data.

A) Confidentiality
B) Availability
C) Encryption
D) Integrity

Answer 3

D

Question 4

The basis for a digital signature rests on the ability of ____ keys to work in both directions.

A) symmetric
B) shared
C) unique
D) asymmetric

Question 5

Symmetric encryption is also called ____ cryptography.

A) private key
B) public key
C) symmetric key
D) shared key

Question 6

The simplest type of stream cipher is a ____ cipher.

A) shift
B) substitution
C) lock
D) loop

Question 7

Cryptography cannot be applied to entire disks.

Question 8

____ is designed to replace DES.

A) AES
B) Twofish
C) 3DES
D) RSA

Question 9

The algorithm ____ is a block cipher that operates on 64-bit blocks and can have a key length from 32 to 448 bits.

A) RSA
B) AES
C) Blowfish
D) 3DES

Question 10

One of the most famous ancient cryptographers was ____.

A) Albert Einstein
B) Isaac Newton
C) Julius Caesar
D) Caesar Augustus

Question 11

____ takes plaintext of any length and creates a hash 128 bits long.

A) RSA
B) SHA1
C) MD5
D) MD2

Question 12

____ is a relatively recent cryptographic hash function that has received international recognition and adoption by standards organizations, including the International Organization for Standardization (ISO).

A) Twofish
B) Blowfish
C) Whirlpool
D) Rijndal

Question 13

____ is text that has no formatting (such as bolding or underlining) applied.

A) Plaintext
B) Plain text
C) Simpletext
D) Simple text

Question 14

A ____ cipher rearranges letters without changing them.

A) substitution
B) block
C) loop
D) transposition

Question 15

____ encryption uses two keys instead of only one and these keys are mathematically related.

A) Symmetric
B) Asymmetric
C) Shared
D) Public key

Question 16

The____ is a symmetric cipher that was approved by the NIST in late 2000 as a replacement for DES.

A) AES
B) 3DES
C) RSA
D) Twofish

Question 17

Self-encrypting HDD is commonly found in copiers and multifunction printers as well as point-of-sale systems used in government, financial, and medical environments.

Question 18

The most basic type of cryptographic algorithm is a ____ algorithm.

A) hash
B) key
C) digest
D) block

Question 19

Most HSMs are PAN-based appliances that can provide services to multiple devices.

Question 20

Steganography can use image files, audio files, or even video files to contain hidden information.

Question 21

The original cryptographic algorithms for encrypting and decrypting documents are ____________________ cryptographic algorithms.

Question 22

Explain hashing.

Question 23

____ attempts to use the unusual and unique behavior of microscopic objects to enable users to securely develop and share keys as well as to detect eavesdropping.

A) Reactive cryptography
B) Symmetric cryptography
C) Analog cryptography
D) Quantum cryptography

Question 24

DES is a(n) ____________________ cipher.

Question 25

Discuss how HMAC works.

Question 26

A ____ is a number divisible only by itself and 1.

A) prime number
B) prime decimal
C) compound number
D) neutral number

Question 27

A(n) ____________________ is a method used by operating systems to store, retrieve, and organize files.

Question 28

Describe how Message Digest2 (MD2) works.

Question 29

In information technology, ____________________ is the process of proving that a user performed an action, such as sending an e-mail message or a specific document.

Question 30

The ____ is essentially a chip on the motherboard of the computer that provides cryptographic services.

A) TPM
B) SCM
C) reference monitor
D) ODS

Question 31

Discuss how cryptography can help ensure the availability of the data.

Question 32

List and describe the characteristics a hashing algorithm must have to be considered secure.

Question 33

The ____ algorithm is the most common asymmetric cryptography algorithm and is the basis for several products.

A) AES
B) RSA
C) Twofish
D) Blowfish

Question 34

____ was first proposed in the mid-1980s and it uses sloping curves.

A) FCC
B) RSA
C) ECC
D) IKE

Question 35

Describe the RIPEMD hash.

Question 36

NTRUEncrypt uses ____ cryptography that relies on a set of points in space.

A) matrix-based
B) lattice-based
C) linear
D) quantum

Question 37

Describe how a block cipher works.

Question 38

Cleartext data that is to be encrypted is called ____________________.

Question 39

Describe the origins of cryptography.

Question 40

Describe the purpose and composition of Suite B.

Question 41

Describe hard disk drive encryption.