Chpt 7

Question 1

Which algorithm is based on the inherent difficulty in factoring large prime numbers?

Answer 1

RSA

Question 2

What does SHA stand for?

Answer 2

Secure hash algorithm

Question 3

What is the hash value length for all MD2, MD4, and MD5?

Answer 3

128

Question 4

What is the hash value length for SHA-1?

Answer 4

160

Question 5

What are the lengths of Hash of Variable Length (HAVAL)?

Answer 5

128, 160, 192, 224, and 256 bits

Question 6

What does HMAC stand for?

Answer 6

Hashed message authentication code.

This gives a partial digital signature, but does not provide for nonrepudiation

Question 7

What does S/MIME stand for?

Answer 7

Secure/Multipurpose Internet Mail Extensions.

The de facto standard for email encryption.

Question 8

What port does Transport Layer Security use?

Answer 8

TLS uses port 443

Question 9

PGP uses which crypto system?

Answer 9

IDEA

Question 10

What cryptosystem is used for WPA?

Answer 10

TKIP

Question 11

What is the size of the SHA-1 hash message digest?

Answer 11

160-bits

Question 12

El Gamal extends which cryptosystem key exchange protocol?

Answer 12

Diffie-Hellman