Crypto

Question 1

MD5

Answer 1

128 Bit - Hash - Integrity

Question 2

SHA-1

Answer 2

160 Bit - Hash - Integrity

Question 3

SHA-2

Answer 3

224, 256, 384, 512 Bit Hash - Integrity

Question 4

HMAC-MD5

Answer 4

128 Bit - Hash with Shared Secret Key. Integrity and Authenticity

Question 5

HMAC-SHA1

Answer 5

160 Bit - Hash with Shared Secret Key. Integrity and Authenticity

Question 6

RIPEMD

Answer 6

160, 128, 256, 320 Bit Hashes

Question 7

LANMAN

Answer 7

Hash

Question 8

NTLM, NTLMv2

Answer 8

Hash

Question 9

How does Symmetric Encryption use keys?

Answer 9

Encrypts and Decrypts with the same key

Question 10

How does Asymmetric Encryption use keys?

Answer 10

Matched key pair of a public key and private key

Question 11

Symmetric Encryption Algorithms (6)

Answer 11

AES, DES, 3DES, Blowfish, Twofish, RC4

Question 12

AES Cipher

Answer 12

128 Bit Block

Question 13

DES Cipher

Answer 13

64 Bit Block

Question 14

3DES Cipher

Answer 14

64 Bit Block

Question 15

Blowfish Cipher

Answer 15

64 Bit Block

Question 16

Twofish Cipher

Answer 16

128 Bit Block

Question 17

RC4 Cipher

Answer 17

Stream

Question 18

AES Key Size

Answer 18

128, 192, 256 bit key

Question 19

DES Key Size

Answer 19

56 Bit Key

Question 20

3DES Key Size

Answer 20

56, 112, 168 Bit key

Question 21

Blowfish Key Size

Answer 21

32 to 448 Bit Key

Question 22

Twofish Key Size

Answer 22

128, 192, 256 Bit Key

Question 23

RC4 Key Size

Answer 23

40 - 2,048 Bit Key

Question 24

Diffie-Hellman

Answer 24

Key Exchange Algorithm to privately share a symmetric Key

Question 25

IPsec

Answer 25

Can Encrypt in Tunnel Mode or Transport Mode (between two systems)

Question 26

IPsec uses Authentication Header (AH) for what?

Answer 26

Authenticity & Integrity. Uses HMAC for AH

Question 27

CSR

Answer 27

Certificate Signing Request

Question 28

CRL

Answer 28

Certificate Revocation Library

Question 29

OCSP

Answer 29

Used for Cert Validation. Queries CA. Response is "good", "revoked", "unknown"

Question 30

PBKDF2

Answer 30

Key Stretching and Salting Prevents Brute Force and Rainbow Table

Question 31

IDEA Cipher

Answer 31

64 Bit Block

Question 32

IDEA Key

Answer 32

128 Bit Key

Question 33

RC5 Cipher

Answer 33

32, 64, 128

Question 34

RC5 Key

Answer 34

0-2040

Question 35

CAST Cipher

Answer 35

64 Bit Block

Question 36

CAST Key

Answer 36

40-128

Question 37

SHA3

Answer 37

224, 256, 384, 512`