Quiz #6

Question 1

1- Which hashing algorithm is a one-way function, produces a 160-bit value, and it’s used with DSA?

Answer 1

SHA

Question 2

2- RSA and DSA are the best known and most widely used digital signature algorithm

Answer 2

YES

Question 3

4- Hash value is also known as _________________?

Answer 3

Message Digest

Question 4

5- Which of the following choices can you use to verify data integrity

Answer 4

SHA

Question 5

6- The lifetime of a key doesn’t matter how much it’s used

Answer 5

False

Question 6

7- A good hashing algorithm should not produce the same hash value for two different messages

Answer 6

True

Question 7

8- PGP was released in what year

Answer 7

1991

Question 8

9- One way hashing function is never performed in reverse

Answer 8

True

Question 9

10- Bart wants to send a secure email to Lisa so he decides to encrypt it. Bart wants to ensure that
Lisa can verify he sent it. Which of the following does Lisa need to meet this requirement

Answer 9

Bart’s public key

Question 10

11- The one thing asymmetric and Symmetric algorithms have in common is that two identical keys are used to encrypt and decrypt the date

Answer 10

False

Question 11

12- Decrypt message below using cipher method – The key is (CLUB)
vsy hwygbp, yungo vz qqzjetumu lm poll nceyfp, hut mtfmgo ugvpl ucvcoi sitvlafu

Answer 11

ggf

Question 12

13- When DEA algorithm is applied to data, it divides the message into blocks and operates on them at the same time.

Answer 12

TRUE

Question 13

14- Which of the four DES modes encrypts large amounts of data.

Answer 13

CBC

Question 14

15- What do you call a 64-bit data block, divided into 169 smaller blocks and each has eight rounds of mathematical functions?

Answer 14

International Data Encryption Algorithm (IDEA)

Question 15

16- Which asymmetric encryption algorithm is used for encryption, key distribution and digital signature

Answer 15

RSA and Elliptic Curve Cryptosystems

Question 16

17- _________________ replaced the DES to protect sensitive, but unclassified, US government information

Answer 16

AES

Question 17

18- _______________ is a secret key that is used to encrypt messages between two users.

Answer 17

Private Key, Public Key, Session Key

Question 18

19- To break an encryption means that someone was able to identify the algorithm

Answer 18

False

Question 19

20- Encrypt the message below using Viginiere cipher Method
RESCUE WORKERS CAN BE SEEN LOOKING FOR SUVIVORS

The Key is CAR

Answer 19

tejeuv yoimeiu crp bv uevp lfqkzpg wqr jwvzxoiu