"""
State the probability achieved by your adversary and the number of oracle calls
it makes.
probability:
queries:
"""
from crypto.games.game_lr import GameLR
from crypto.simulator.lr_sim import LRSim
if __name__ == '__main__':
g = GameLR(encrypt, 16, 16)
s = LRSim(g, adversary)
print "The advantage of your adversary is ~" + str(s.compute_advantage())
key = random_string(block_size)
for j in range(100):
blocks = random.randrange(100)
message = random_string(blocks * 16)
cypher = encrypt(key, message)
bad = False
if message != decrypt(key, cypher):
bad = True
if bad:
print "Your Decryption function is incorrect"
else:
world.
"""
pass
"""
3. [10 points] Provide a succinct analysis justifying the claimed advantage:
--&--
[Answer here.]
"""
from crypto.games.game_lr import GameLR
from crypto.simulator.lr_sim import LRSim
if __name__ == '__main__':
g = GameLR(encrypt, key_len)
s = LRSim(g, A)
print "The advantage of your adversary is ~" + str(s.compute_advantage())
key = random_string(key_len)
for j in range(100):
blocks = random.randrange(100)
message = random_string(blocks*block_len)
cypher = encrypt(key, message)
if message != decrypt(key, cypher):
print "Your Decryption function is incorrect"
print "Your Decryption function is correct"
:param enc: This is an oracle supplied by GameINTCTXT, you can call this
oracle to get an encryption of the data you pass into it.
:param dec: This is an oracle supplied by GameINTCTXT, you can call this
oracle to get a decryption of the data you pass into it.
"""
pass
"""
3. [15 points] Is SE an Encrypt-and-MAC construction? Justify your answer.
--&--
[Answer here].
"""
from crypto.games.game_lr import GameLR
from crypto.simulator.lr_sim import LRSim
from crypto.games.game_int_ctxt import GameINTCTXT
from crypto.simulator.ctxt_sim import CTXTSim
if __name__ == '__main__':
g1 = GameLR(E, 16)
s1 = LRSim(g1, A_1)
g2 = GameINTCTXT(E, D, key_len)
s2 = CTXTSim(g2, A_2)
print "The advantage of A_1 adversary is ~" + str(s1.compute_advantage())
print "The advantage of A_2 adversary is ~" + str(s2.compute_advantage())
:param enc: This is an oracle supplied by GameINTCTXT, you can call this
oracle to get an encryption of the data you pass into it.
:param dec: This is an oracle supplied by GameINTCTXT, you can call this
oracle to get a decryption of the data you pass into it.
"""
pass
"""
3. [15 points] Is SE an Encrypt-and-MAC construction? Justify your answer.
--&--
[Answer here].
"""
from crypto.games.game_lr import GameLR
from crypto.simulator.lr_sim import LRSim
from crypto.games.game_int_ctxt import GameINTCTXT
from crypto.simulator.ctxt_sim import CTXTSim
if __name__ == '__main__':
g1 = GameLR(E, 16)
s1 = LRSim(g1, A_1)
g2 = GameINTCTXT(E, D, key_len)
s2 = CTXTSim(g2, A_2)
print "The advantage of A_1 adversary is ~" + str(s1.compute_advantage())
print "The advantage of A_2 adversary is ~" + str(s2.compute_advantage())