Information Assurance 5

Question 1

a broad, umbrella term that encompasses both cryptography and cryptanalysis

Answer 1

Cryptology

Question 2

protecting data by hiding it from anyone who isn’t supposed to see, access, or change it

Answer 2

Cryptography

Question 3

figuring out how to access the data without having the necessary cryptographic key

Answer 3

Cryptanalysis

Question 4

is the process by which a readable message is converted to an unreadable form to prevent unauthorized parties from reading it

Answer 4

Encryption

Question 5

is a structure or scheme consisting of a set of algorithms that converts plaintext to ciphertext to encode or decode messages securely

Answer 5

Cryptosystem

Question 6

this type of cryptography uses a single key for both encryption and decryption

Answer 6

Symmetric

Question 7

allows users to encrypt information
using shared keys

Answer 7

Asymmetric

Question 8

is the process of converting an encrypted message back to its original (readable) format

Answer 8

Decryption

Question 9

the original message

Answer 9

Plaintext

Question 10

a method by which Caesar was able to secretly communicate with his generals without anyone being able to read the messages

Answer 10

Caesar Cipher

Question 11

which has a better performance and a faster speed, symmetric or asymmetric?

Answer 11

Symmetric

Question 12

another word for algorithm

Answer 12

Cipher

Question 13

the process of asymmetric cryptography

Answer 13

1. Registration
2. Lookup
3. Encrypt
4. Decode
5. Reply

Question 14

pros of asymmetric cryptography

Answer 14

• Security
• Transparency
• Appearance

Question 15

cons of asymmetric cryptography

Answer 15

• Speed
• Vulnerabilities
• Loss
• Long-term sustainability

Question 16

are one way mathematical functions that take an input of any length and produce a fixed size output, called a hash

Answer 16

Hash functions

Question 17

a symmetric algorithm that uses the same key to encrypt and decrypt protected data

Answer 17

Advanced Encryption Standard (AES)

Question 18

is based on public key encryption (asymmetric) technology which is a public key cryptosystem for reliable data transmission

Answer 18

Rivest, Shamir, Adleman (RSA) algorithm

Question 19

is a widely used cryptographic hash function that results in a 128 bit hash value

Answer 19

Message Digest algorithm 5 (MD5)

Question 20

used for hashing data and certificate files

Answer 20

Secure Hash Algorithm (SHA)

Question 21

is an electronic, encrypted, stamp of authentication on digital information such as email messages, macros, or electronic documents

Answer 21

Digital Signature

Question 22

digital signature assurances

Answer 22

• Authenticity
• Integrity
• Non-repudiation
• Notarization

Question 23

issues digital certificates, signs certificates to verify their validity and tracks which certificates have been revoked or have expired

Answer 23

Certificate Authority (CA)