def _decrypt_rwcapdata(self, encwrcap):
salt = encwrcap[:16]
crypttext = encwrcap[16:-32]
key = hashutil.mutable_rwcap_key_hash(salt, self._node.get_writekey())
encryptor = aes.create_decryptor(key)
plaintext = aes.decrypt_data(encryptor, crypttext)
return plaintext
def _decrypt_rwcapdata(self, encwrcap):
salt = encwrcap[:16]
crypttext = encwrcap[16:-32]
key = hashutil.mutable_rwcap_key_hash(salt, self._node.get_writekey())
cryptor = AES(key)
plaintext = cryptor.process(crypttext)
return plaintext
def _decrypt_rwcapdata(self, encwrcap):
salt = encwrcap[:16]
crypttext = encwrcap[16:-32]
key = hashutil.mutable_rwcap_key_hash(salt, self._node.get_writekey())
cryptor = AES(key)
plaintext = cryptor.process(crypttext)
return plaintext
def _encrypt_rw_uri(writekey, rw_uri):
precondition(isinstance(rw_uri, str), rw_uri)
precondition(isinstance(writekey, str), writekey)
salt = hashutil.mutable_rwcap_salt_hash(rw_uri)
key = hashutil.mutable_rwcap_key_hash(salt, writekey)
encryptor = aes.create_encryptor(key)
crypttext = aes.encrypt_data(encryptor, rw_uri)
mac = hashutil.hmac(key, salt + crypttext)
assert len(mac) == 32
return salt + crypttext + mac
def _encrypt_rw_uri(writekey, rw_uri):
precondition(isinstance(rw_uri, str), rw_uri)
precondition(isinstance(writekey, str), writekey)
salt = hashutil.mutable_rwcap_salt_hash(rw_uri)
key = hashutil.mutable_rwcap_key_hash(salt, writekey)
cryptor = AES(key)
crypttext = cryptor.process(rw_uri)
mac = hashutil.hmac(key, salt + crypttext)
assert len(mac) == 32
return salt + crypttext + mac
def _encrypt_rw_uri(writekey, rw_uri):
precondition(isinstance(rw_uri, str), rw_uri)
precondition(isinstance(writekey, str), writekey)
salt = hashutil.mutable_rwcap_salt_hash(rw_uri)
key = hashutil.mutable_rwcap_key_hash(salt, writekey)
cryptor = AES(key)
crypttext = cryptor.process(rw_uri)
mac = hashutil.hmac(key, salt + crypttext)
assert len(mac) == 32
return salt + crypttext + mac
