xtt

xtt-python

A Python module (xtt) that encapsulates the XTT Trusted Transit protocol for securing Internet of Things (IoT) devices.

Installation

pip install xtt

The package is published to PyPI for Python 2.7 and 3.3+ for Linux and OS X. pip installs all dependencies, including xtt itself.

Quick-Start

import socket
import xtt

# In these examples, we assume the id, certs, and keys needed to run
# an XTT client handshake are available as files.

# Load root certificate, used to authenticate the server
root_id     = xtt.CertificateRootId.from_file("root_id.bin")
root_pubkey = xtt.ED25519PublicKey.from_file("root_pub.bin")

# Load the server id
server_id   = xtt.Identity.from_file("server_id.bin")

# Load the DAA group information
group_basename  = b'BASENAME'
group_gpk       = xtt.LRSWGroupPublicKey.from_file("daa_gpk.bin")
group_id        = xtt.GroupId(hashlib.sha256(group_gpk.data).digest())
group_cred      = xtt.LRSWCredential.from_file("daa_cred.bin")
group_secretkey = xtt.LRSWPrivateKey.from_file("daa_secretkey.bin")
group_ctx       = xtt.ClientLRSWGroupContext(group_id, group_secretkey,
                                             group_cred, group_basename)

sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM, 0)
sock.connect(('192.0.2.1', 4443))

xtt_sock = xtt.XTTClientSocket(sock,
                               version = xtt.Version.ONE,
                               suite_spec = xtt.SuiteSpec.XTT_X25519_LRSW_ED25519_CHACHA20POLY1305_SHA512,
                               group_ctx, server_id, root_id, root_pubkey)
xtt_sock.start()
my_identity    = xtt_sock.identity
my_public_key  = xtt_sock.longterm_public_key
my_private_key = xtt_sock.longterm_private_key

Contributing

Please submit bugs, questions, suggestions, or (ideally) contributions as issues and pull requests on GitHub.

License

Copyright 2018 Xaptum, Inc.

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this work except in compliance with the License. You may obtain a copy of the License from the LICENSE.txt file or at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.