def session_input (_inbound_key, _inbound_nonce, _encrypted) :
pysodium.sodium_increment (_inbound_nonce)
log ("[8408f904]", "[crypto][input]", "using nonce `%s`;", _inbound_nonce.encode ("b64"))
log ("[62fc5bf5]", "[crypto][input]", "decoding packet (encrypted) `%s`...", _encrypted.encode ("b64"))
_packet = pysodium.crypto_secretbox_open (_encrypted, _inbound_nonce, _inbound_key)
log ("[7eeb53a0]", "[crypto][input]", "decoded packet (plain) `%s`;", _packet.encode ("b64"))
return _packet
def session_output (_outbound_key, _outbound_nonce, _packet) :
pysodium.sodium_increment (_outbound_nonce)
log ("[7a9b17ef]", "[crypto][output]", "using nonce `%s`;", _outbound_nonce.encode ("b64"))
log ("[04a30b0d]", "[crypto][output]", "encoding packet (plain) `%s`...", _packet.encode ("b64"))
_encrypted = pysodium.crypto_secretbox (_packet, _outbound_nonce, _outbound_key)
log ("[06c3b67d]", "[crypto][output]", "encoded packet (encrypted) `%s`;", _encrypted.encode ("b64"))
return _encrypted
def test_sodium_inc(self):
r = b'A' * 32
pysodium.sodium_increment(r)
self.assertEqual(r, b'BAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA')