C839 Review v2 with
100% correct answers
2025
Quark is a light-weight cryptography method used for hashing and
stream encryption. What size message digest is Quark capable of
producing when used for hashing? Select all that apply.
64, 256
256, 128, 112
112, 64
112, 64
Which attributes from the list below describe Blowfish?
32-448 key size (common = 128, 192, or 256)
0-2048 key size
1-256 bit key size (common = 128, 192, or 256)
512 bit key size
32-448 key size (common = 128, 192, or 256)
Which light-weight symmetric block cipher has a variable block size
of 32, 48, 64, 96, 128 bits and is optimized for software
implementations?
PRESENT
PHOTON
SPECK
SIMON
SPECK
Which light-weight symmetric stream cipher has an 80-bit key size
and 80-bit IV?
PRESENT
Skipjack
Enocoro
Trivium
Trivium
,Chaskey is a light-weight cryptography method used for signing
messages that employs a ____ bit key size.
256
64
128
16
128
Select the light-weight symmetric stream ciphers from the list
below.
Simon, Rabbit
Enocoro, Mickey v2, Rabbit
Mickey v2, Simon, Rabbit
Rabbit, Simon
Enocoro, Mickey v2, Rabbit
Select the correct attributes for the symmetric block cipher IDEA
from the list below.
128 bit blocks, 64 bit keys, >17 rounds
128 bit blocks, 128 bit keys, 8 rounds
64 bit blocks, 128 bit keys, <17 rounds
64 bit blocks, 128 bit keys, >17 rounds
64 bit blocks, 128 bit keys, >17 rounds
Which light-weight symmetric block cipher has a variable block size
of 32, 48, 64, 96, 128 bits and is optimized for hardware
implementations?
PRESENT
SIMON
SPECK
PHOTON
SIMON
WEP employs a ____ bit initialization vector.
128
48
24
40
24
Which light-weight public key cipher is best paired with RFID
implementations?
, Elli
Chaskey
Rabbit
Trivium
Elli
Rabbit key size
80
128
128
Enocoro key size
80
128
128
Mickey v2 key size
80
128
80
Grain key size
80
128
80
Trivium key size
80
128
80
Which light-weight symmetric stream cipher has a 128-bit key size
and a 64-bit initialization vector?
CLEFIA
XTEA
Rabbit
Grain
Rabbit
Select the correct attributes for the symmetric block cipher Skipjack
from the list below.
64 bit block size, 80 bit key size
100% correct answers
2025
Quark is a light-weight cryptography method used for hashing and
stream encryption. What size message digest is Quark capable of
producing when used for hashing? Select all that apply.
64, 256
256, 128, 112
112, 64
112, 64
Which attributes from the list below describe Blowfish?
32-448 key size (common = 128, 192, or 256)
0-2048 key size
1-256 bit key size (common = 128, 192, or 256)
512 bit key size
32-448 key size (common = 128, 192, or 256)
Which light-weight symmetric block cipher has a variable block size
of 32, 48, 64, 96, 128 bits and is optimized for software
implementations?
PRESENT
PHOTON
SPECK
SIMON
SPECK
Which light-weight symmetric stream cipher has an 80-bit key size
and 80-bit IV?
PRESENT
Skipjack
Enocoro
Trivium
Trivium
,Chaskey is a light-weight cryptography method used for signing
messages that employs a ____ bit key size.
256
64
128
16
128
Select the light-weight symmetric stream ciphers from the list
below.
Simon, Rabbit
Enocoro, Mickey v2, Rabbit
Mickey v2, Simon, Rabbit
Rabbit, Simon
Enocoro, Mickey v2, Rabbit
Select the correct attributes for the symmetric block cipher IDEA
from the list below.
128 bit blocks, 64 bit keys, >17 rounds
128 bit blocks, 128 bit keys, 8 rounds
64 bit blocks, 128 bit keys, <17 rounds
64 bit blocks, 128 bit keys, >17 rounds
64 bit blocks, 128 bit keys, >17 rounds
Which light-weight symmetric block cipher has a variable block size
of 32, 48, 64, 96, 128 bits and is optimized for hardware
implementations?
PRESENT
SIMON
SPECK
PHOTON
SIMON
WEP employs a ____ bit initialization vector.
128
48
24
40
24
Which light-weight public key cipher is best paired with RFID
implementations?
, Elli
Chaskey
Rabbit
Trivium
Elli
Rabbit key size
80
128
128
Enocoro key size
80
128
128
Mickey v2 key size
80
128
80
Grain key size
80
128
80
Trivium key size
80
128
80
Which light-weight symmetric stream cipher has a 128-bit key size
and a 64-bit initialization vector?
CLEFIA
XTEA
Rabbit
Grain
Rabbit
Select the correct attributes for the symmetric block cipher Skipjack
from the list below.
64 bit block size, 80 bit key size
