def intestinize(password, birthdate):
salt = sha3(birthdate)
time_cost = get_time_cost(birthdate)
digest = Argon2id(time_cost=time_cost, salt=salt).hash(password)
del password
digest = digest[digest.rfind('$')+1:]
digest = digest.encode('utf-8') # for concatenating with checksum
checksum = sha3(digest)[-4:]
digest += checksum
return digest
def test_sha3_empty(self):
value = ''
digest = tools.sha3(value)
self.assertEqual(
digest,
b'\xa7\xff\xc6\xf8\xbf\x1e\xd7fQ\xc1GV\xa0a\xd6b\xf5\x80\xffM\xe4;I\xfa\x82\xd8\nK\x80\xf8CJ'
)
def test_sha3_notbytes(self):
value = 'bytesbytes'
digest = tools.sha3(value)
self.assertEqual(
digest,
b'\xcb\t\xa2\x8f\x8f\x8c?u\xcef\x97\x1aI\xcbja\xab\xc1\xb8\xcb\x95(\x96u+l\'m\xa7\xb5}"'
)
def setup(master_password, birthdate):
success = True
# We want to get rid of the master password ASAP so we hash it (512 to keep entropy)
digest = sha3(master_password)
del master_password
digest = intestinize(digest, birthdate)
try:
with open(working_path + sep + 'MasterPasswordDigest.txt','wb') as f:
f.write(digest)
except Exception as e:
return not success, "File writing error (" + str(e) + ")"
else:
return success, "The digest file has been saved. You can now use PassGen."
def intestinize(masterpassworddigest, website_name, short):
"""
Returns a string (not bytes) of readable characters
"""
Input = masterpassworddigest + website_name
# can't bruteforce password really so we set time_cost to 1
salt = sha3(website_name)
length = 24 # for 24 characters
if short:
length = 8 # for 8 characters
digest = Argon2id(salt=salt,
hash_len=ceil(length / 1.33),
memory_cost=33554,
time_cost=1).hash(Input)
del Input, masterpassworddigest, website_name
digest = digest[digest.rfind('$') + 1:]
return digest[:length]
def test_sha3_notbytes_hexa(self):
value = 'bytesbytes'
digest = tools.sha3(value, hexa=True)
self.assertEqual(
digest,
'cb09a28f8f8c3f75ce66971a49cb6a61abc1b8cb952896752b6c276da7b57d22')
def checksumIsValid(digest):
try:
checksum = sha3(digest[:-4])[-4:]
except TypeError:
return False # digest is not bytes
return digest[-4:] == checksum