119 lines
4.4 KiB
Python
119 lines
4.4 KiB
Python
# -*- coding: utf-8 -*-
|
|
# Copyright 2014 OpenMarket Ltd
|
|
#
|
|
# Licensed under the Apache License, Version 2.0 (the "License");
|
|
# you may not use this file except in compliance with the License.
|
|
# You may obtain a copy of the License 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.
|
|
|
|
from _base import SQLBaseStore
|
|
|
|
from twisted.internet import defer
|
|
|
|
import OpenSSL
|
|
from syutil.crypto.signing_key import decode_verify_key_bytes
|
|
import hashlib
|
|
|
|
|
|
class KeyStore(SQLBaseStore):
|
|
"""Persistence for signature verification keys and tls X.509 certificates
|
|
"""
|
|
|
|
@defer.inlineCallbacks
|
|
def get_server_certificate(self, server_name):
|
|
"""Retrieve the TLS X.509 certificate for the given server
|
|
Args:
|
|
server_name (bytes): The name of the server.
|
|
Returns:
|
|
(OpenSSL.crypto.X509): The tls certificate.
|
|
"""
|
|
tls_certificate_bytes, = yield self._simple_select_one(
|
|
table="server_tls_certificates",
|
|
keyvalues={"server_name": server_name},
|
|
retcols=("tls_certificate",),
|
|
)
|
|
tls_certificate = OpenSSL.crypto.load_certificate(
|
|
OpenSSL.crypto.FILETYPE_ASN1, tls_certificate_bytes,
|
|
)
|
|
defer.returnValue(tls_certificate)
|
|
|
|
def store_server_certificate(self, server_name, from_server, time_now_ms,
|
|
tls_certificate):
|
|
"""Stores the TLS X.509 certificate for the given server
|
|
Args:
|
|
server_name (str): The name of the server.
|
|
from_server (str): Where the certificate was looked up
|
|
time_now_ms (int): The time now in milliseconds
|
|
tls_certificate (OpenSSL.crypto.X509): The X.509 certificate.
|
|
"""
|
|
tls_certificate_bytes = OpenSSL.crypto.dump_certificate(
|
|
OpenSSL.crypto.FILETYPE_ASN1, tls_certificate
|
|
)
|
|
fingerprint = hashlib.sha256(tls_certificate_bytes).hexdigest()
|
|
return self._simple_insert(
|
|
table="server_tls_certificates",
|
|
values={
|
|
"server_name": server_name,
|
|
"fingerprint": fingerprint,
|
|
"from_server": from_server,
|
|
"ts_added_ms": time_now_ms,
|
|
"tls_certificate": buffer(tls_certificate_bytes),
|
|
},
|
|
or_ignore=True,
|
|
)
|
|
|
|
@defer.inlineCallbacks
|
|
def get_server_verify_keys(self, server_name, key_ids):
|
|
"""Retrieve the NACL verification key for a given server for the given
|
|
key_ids
|
|
Args:
|
|
server_name (str): The name of the server.
|
|
key_ids (list of str): List of key_ids to try and look up.
|
|
Returns:
|
|
(list of VerifyKey): The verification keys.
|
|
"""
|
|
sql = (
|
|
"SELECT key_id, verify_key FROM server_signature_keys"
|
|
" WHERE server_name = ?"
|
|
" AND key_id in (" + ",".join("?" for key_id in key_ids) + ")"
|
|
)
|
|
|
|
rows = yield self._execute_and_decode(sql, server_name, *key_ids)
|
|
|
|
keys = []
|
|
for row in rows:
|
|
key_id = row["key_id"]
|
|
key_bytes = row["verify_key"]
|
|
key = decode_verify_key_bytes(key_id, str(key_bytes))
|
|
keys.append(key)
|
|
defer.returnValue(keys)
|
|
|
|
def store_server_verify_key(self, server_name, from_server, time_now_ms,
|
|
verify_key):
|
|
"""Stores a NACL verification key for the given server.
|
|
Args:
|
|
server_name (str): The name of the server.
|
|
key_id (str): The version of the key for the server.
|
|
from_server (str): Where the verification key was looked up
|
|
ts_now_ms (int): The time now in milliseconds
|
|
verification_key (VerifyKey): The NACL verify key.
|
|
"""
|
|
return self._simple_insert(
|
|
table="server_signature_keys",
|
|
values={
|
|
"server_name": server_name,
|
|
"key_id": "%s:%s" % (verify_key.alg, verify_key.version),
|
|
"from_server": from_server,
|
|
"ts_added_ms": time_now_ms,
|
|
"verify_key": buffer(verify_key.encode()),
|
|
},
|
|
or_ignore=True,
|
|
)
|