2.8 crytp

Question 1

Only encryption standard with a stream cipher

Answer 1

RC4

Question 2

What encryption is used on mobile devices, and why?

Answer 2

ECC

It saves CPU/power for TLS/SSL asymmetric key

Question 3

Is DES symmetric or asymmetric?

Answer 3

symmetric

Question 4

Is Twofish symmetric or asymmetric?

Answer 4

symmetric

Question 5

Is Blowfish symmetric or asymmetric?

Answer 5

symmetric

Question 6

Is RSA symmetric or asymmetric?

Answer 6

asymmetric

Question 7

Is PGP symmetric or asymmetric?

What is it used for?

Answer 7

PGP is a public-key cryptosystem and relies on an asymmetric algorithm (IDEA).

PGP is used for signing, encrypting, and decrypting texts, emails, files, directories, and whole disk partitions and to increase the security of email communications.

Question 8

Is Diffie-Hellman symmetric or asymmetric?

Answer 8

asymmetric

Question 9

Is ECC symmetric or asymmetric?

Answer 9

asymmetric

Question 10

Is Diffie-Hellman symmetric or asymmetric?

Answer 10

asymmetric

Question 11

Is ECC symmetric or asymmetric?

Answer 11

asymmetric

Question 12

public-key cryptosystems all rely on what? Examples?

Answer 12

an asymmetric algorithm

Diffie-Hellman, RSA

Question 13

Name two 128bit hashing algorithms

Answer 13

MD5

NTLM

Question 14

Name two 160bit hashing algorithms

What is one used for?

Answer 14

RIPEMD

SHA-1 (SRTP encryption)

Question 15

Name one 256bit hashing algorithm

Answer 15

SHA-2

Question 16

Is AES symmetric or asymmetric?

What is it used for?

Answer 16

symmetric

WPA2/WPA3

Question 17

Is DSA symmetric or asymmetric?

What is it used for?

Answer 17

asymmetric

Federal information processing standard for digital signatures.