def validate_integrity(received_msg, dgs1):
print(len(received_msg))
msg = nacl.encoding.HexEncoder.decode(received_msg)
print("orig", pickle.loads(msg))
dgs0 = HASHER(msg, encoder=nacl.encoding.HexEncoder)
print("dgs0", dgs0)
print("dgs1", dgs1)
if sodium_memcmp(dgs0, dgs1):
return 1 #'equals'
return 0 #'is different from'
def v1_decrypt(m, k, f=None):
h = V1_LOCAL
m, fi = _unpack_msg(h, m, f)
n = m[:32] # ?
t = m[-48:] # ?
c = m[32:-48]
ek = _v1_derive_key(k, n, EK_INFO)
ak = _v1_derive_key(k, n, AK_INFO)
pre_auth = pae([h, n, c, fi])
t2 = _v1_hmac_sha384(pre_auth, ak)
if not sodium_memcmp(t, t2):
raise pexc.InvalidKeyError("mismatching token signature (t != t2)")
dec = _v1_aes_ctr_cipher(ek, n[-16:]).decryptor()
return dec.update(c) + dec.finalize(), fi
def _unpack_msg(h, m, f):
if not m.startswith(h):
raise pexc.ValueError("invalid message header (must be {})".format(
h.decode("utf-8")))
mp = m[len(h):].split(b".")
l = len(mp)
if l == 1:
(m, ) = mp
fi = b""
elif l == 2:
(m, fi) = mp
else:
raise pexc.ValueError("invalid message")
m = unb64(m)
fi = unb64(fi)
if f is not None and not sodium_memcmp(fi, f):
raise pexc.ValueError("invalid (mismatched) footer")
return m, fi
def _replica_handler_2601(self, encrypt_hashresult, client, frep):
try:
self._state.nrs[self._state.c.index(client)] = (self._state.nrs[self._state.c.index(client)] + 1)
except KeyError:
self._state.nrs[self._state.c.index(client)] = 0
for x in self._state.fail:
if (x[0].strip() == 'result_shuttle'):
if (int(x[1]) in self._state.nrs.keys()):
if ((self._state.nrs[int(x[1])] == int(x[2])) and (int(x[1]) == self._state.c.index(client))):
logging.info(((((((('Replica ' + str(self._state.r.index(self._state.idr))) + ' Result_shuttle failure triggered at replica ') + str(self._state.r.index(self._state.idr))) + ' for client ') + x[1]) + ' message ') + x[2]))
if (x[3].strip() == 'change_operation'):
self._state.co = 1
if (x[3].strip() == 'change_result'):
self._state.cr = 1
if (x[3].strip() == 'drop_result_stmt'):
self._state.drs = 1
if (x[3].strip() == 'drop'):
self._state.drop = 1
self._state.s = (self._state.s + 1)
fr_r_dkey = nacl.signing.VerifyKey(self._state.public_key_dict[frep], encoder=nacl.encoding.HexEncoder)
try:
fr_r_dkey.verify(encrypt_hashresult)
temp_hr = eval(encrypt_hashresult.message.decode())
except nacl.exceptions.BadSignatureError:
logging.info((((((('replica ' + str(self._state.r.index(self._state.idr))) + ' : Replica ') + str(self._state.r.index(frep))) + ' -> Replica ') + str(self._state.r.index(self._state.idr))) + ' signature fail'))
logging.info((((((('replica ' + str(self._state.r.index(self._state.idr))) + ' : Replica ') + str(self._state.r.index(frep))) + ' -> Replica ') + str(self._state.r.index(self._state.idr))) + ' signature success'))
for h in temp_hr:
bres = nacl.encoding.HexEncoder.decode(h[1])
orig_dgs = nacl.hash.sha256(bres, encoder=nacl.encoding.HexEncoder)
if sodium_memcmp(h[0], orig_dgs):
if (not (bres.decode() == self._state.result[h[2]])):
logging.info((('Replica ' + str(self._state.r.index(self._state.idr))) + ' Proof of misbehaviour : Reshult_shuttle check failed'))
self._state.hr[h[2]] = temp_hr
logging.info(((('Replica ' + str(self._state.r.index(self._state.idr))) + ' Reshult_shuttle cached for slot ') + str(h[2])))
j = self._state.r.index(frep)
if ((j - 2) >= 0):
encrypt_hashresult = self._state.pk.sign(repr(temp_hr).encode())
self.send(('result-shuttle', encrypt_hashresult, client), to=self._state.r[(j - 2)])
if ((j - 2) < 0):
logging.info((('Replica ' + str(self._state.r.index(self._state.idr))) + ' Reshult_shuttle reached head'))
def secure_compare(val1, val2):
return sodium_memcmp(val1, val2)
def verifyTwoHash(self, hash1, hash2):
if sodium_memcmp(hash1, hash2):
return True
else:
return False
def verifyHash(self, statement, digest):
statementdigest = self.getHash(statement)
if sodium_memcmp(statementdigest, digest):
return True
else:
return False
def eq_chk(self, dgs0, dgs1):
if sodium_memcmp(dgs0, dgs1):
return True
return False
def eq_chk(dgs0, dgs1):
if sodium_memcmp(dgs0, dgs1):
return 'equals'
return 'is different from'
