Cryptography

Question 1

SSID

Answer 1

Service Set IDentifier

Question 2

IV

Answer 2

Initialization Vector

Question 3

AES

Answer 3

Advanced Encryption Standard. Symmetric, along with Twofish, Blowfish, DES. Subset of Rijndael block cypher

Question 4

DHE

Answer 4

Diffie-Hellman Ephemeral. For secure key exchange

Question 5

DSA

Answer 5

Digital Signature Algorithm

Question 6

ECDHE

Answer 6

Elliptic-curve Diffie-Hellman Ephemeral

Question 7

GPG

Answer 7

GNU Privacy Guard

Question 8

PGP

Answer 8

Pretty Good Privacy

Question 9

RSA

Answer 9

Rivest-Shamir-Adleman public-key cryptosystem

Question 10

SHA

Answer 10

Secure Hash Algorithms (SHA-0 SHA-1 SHA-2 SHA-3)

Question 11

HMAC

Answer 11

Hash-based Message Authentication Code

Question 12

XOR

Answer 12

Exclusive Or logical operation. 1 true, 1 false = outputs True

Question 13

CBC

Answer 13

Cipher Block Chaining. No parallel encryption possible as each block depends on all previous blocks. Requires an IV

Question 14

GCM

Answer 14

Galois/Counter Mode. Symmetric-key block cypher

Question 15

ECB

Answer 15

Electronic Code Book. Rudimentary encryption with no diffusion. Identical plaintext blocks convert to identical ciphertext blocks

Question 16

CTR

Answer 16

Counter mode (CM) aka Integer Counter Mode (ICM), turns a block cipher into a stream cipher using a counter with successive vaules

Question 17

WEP

Answer 17

Wired Equivalent Privacy. Wireless security algorithm

Question 18

SSL

Answer 18

Secure Sockets Layer. Deprecated in ‘11 in favor of TLS

Question 19

DES

Answer 19

Data Encryption Standard. Symmetric. Easy to brute force attack. Replaced by AES

Question 20

MAC

Answer 20

Message Authentication Code

Question 21

GMAC

Answer 21

Galois Message Authentication Code (authentication only)

Question 22

TLS

Answer 22

Transport Layer Security. Communications crypto protocols

Question 23

PFS

Answer 23

Perfect Forward Secrecy

Question 24

EFS

Answer 24

Encrypting File System. Windows filesystem-level encryption

Question 25

PFX

Answer 25

.pfx is a M$ file extension for PKCS#12, Public-Key Cryptography Standard, a container for storing many crypto objects as a single file