def mt19937_streamcipher(text, seed):
out = bytes()
m = mt32(seed)
for offset in range(len(text)):
keystream = (m.extract_number() % 256)
out += bytes([text[offset] ^ keystream])
return out
from level21_mt19937 import mt32
from random import randint
import time
# Generates 32 random numbers with mt32 algorithms, with a random seed.
# The filename contains the seed value
time.sleep(randint(0, 10))
random_seed = int(time.time())
mt = mt32(random_seed)
with open(str("mt32/") + str(random_seed) + '.mt32', 'w') as f:
for i in range(32):
time.sleep(randint(0, 3))
f.write(str(mt.extract_number()) + "\n")
f.close()
def get_values_by_seed(seed):
mt = mt32(seed)
return [mt.extract_number() for i in range(32)]
def compare_by_seed(seed, expected):
mt = mt32(seed)
for i in range(32):
if (mt.extract_number() != expected_values[i]):
return False
return True
def generate_token(seed):
m = mt32(seed)
return hexlify(bytes([m.extract_number() % 256 for i in range(16)]))