Encryption

Question 1

AES Block Size

Answer 1

128

Question 2

AES Key Size

Answer 2

128, 192, 256

Question 3

Rijndael Block Size

Answer 3

Variable

Question 4

Rijndael Key Size

Answer 4

128, 192, 256

Question 5

Blowfish Block Size

Answer 5

Variable

Used in SSH

Question 6

Blowfish Key Size

Answer 6

1 - 448

Used in SSH

Question 7

Data Encryption Standard (DES) Block Size

Answer 7

64

Question 8

Data Encryption Standard (DES) Key Size

Answer 8

56

Question 9

IDEA Block Size

Answer 9

64

Used in PGP

Question 10

IDEA Key Size

Answer 10

128

Used in PGP

Question 11

Rivest Cipher 2 (RC2) Block Size

Answer 11

64

Question 12

Rivest Cipher 2 (RC2) Key Size

Answer 12

128

Question 13

Rivest Cipher 4 (RC4) Block Size

Answer 13

Streaming

Question 14

Rivest Cipher 4 (RC4) Key Size

Answer 14

128

Question 15

Rivest Cipher 5 (RC5) Block Size

Answer 15

32, 64, 128

Question 16

Rivest Cipher 5 (RC5) Key Size

Answer 16

0 - 2,040

Question 17

Skipjack Block Size

Answer 17

64

Question 18

Skipjack Key Size

Answer 18

80

Question 19

Triple DES Block Size

Answer 19

64

Question 20

Triple DES Key Size

Answer 20

112 or 168

Question 21

Twofish Block Size

Answer 21

128

Uses pre-whitening and post-whitening

Question 22

Twofish Key Size

Answer 22

1 - 256

Question 23

Diffie-Hellman Variables

Answer 23

p = prime number
g = integer
1 < g < p

Question 24

HTTPS

Answer 24

HTTP over SSL port 443
Creates secure communication that is open for whole session
Uses symmetric and asymmetric cryptography

Question 25

S-HTTP

Answer 25

Secure HTTP
Not as popular as SSL
Secures individual messages between server and client rather than secure channel
Supports two way authentication between server and client rather than server-only authentication

Question 26

RSA Variables

Answer 26

p and q = two large prime numbers
n = p * q
e < n
e and n are public key
d is private key

Question 27

SET Encryption

Answer 27

RSA public key, DES private key, and digital certificates

Question 28

PGP Key Exchange

Answer 28

RSA

Question 29

PGP Encryption

Answer 29

IDEA

Question 30

PGP Message Digest

Answer 30

MD5

Question 31

S/MIME Encryption

Answer 31

RSA

Question 32

S/MIME Key Exchange

Answer 32

X.509

Question 33

S/MIME Public Key Encryption

Answer 33

RSA

Question 34

S/MIME Private Key Encryption

Answer 34

DES, 3DES, RC2

Question 35

SHA-1 Bit Length

Answer 35

160

Question 36

MD5, MD4, MD2 Bit Length

Answer 36

128

Question 37

Hash Message Authentication Code (HMAC) Bit Length

Answer 37

Variable

Question 38

Hash of Variable Length (HAVAL) Bit Length

Answer 38

128, 160, 192, 224, 256

Question 39

Cryptography Algorithm Strength Comparison

Answer 39

ECC>DSA>RSA

160>1024>1088