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Diffstat (limited to 'synapse/crypto/resource/key.py')
| -rw-r--r-- | synapse/crypto/resource/key.py | 161 |
1 files changed, 0 insertions, 161 deletions
diff --git a/synapse/crypto/resource/key.py b/synapse/crypto/resource/key.py deleted file mode 100644 index 48d14b9f4a..0000000000 --- a/synapse/crypto/resource/key.py +++ /dev/null @@ -1,161 +0,0 @@ -# -*- 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 twisted.web.resource import Resource -from twisted.web.server import NOT_DONE_YET -from twisted.internet import defer -from synapse.http.server import respond_with_json_bytes -from synapse.crypto.keyclient import fetch_server_key -from syutil.crypto.jsonsign import sign_json, verify_signed_json -from syutil.base64util import encode_base64, decode_base64 -from syutil.jsonutil import encode_canonical_json -from OpenSSL import crypto -from nacl.signing import VerifyKey -import logging - - -logger = logging.getLogger(__name__) - - -class LocalKey(Resource): - """HTTP resource containing encoding the TLS X.509 certificate and NACL - signature verification keys for this server:: - - GET /key HTTP/1.1 - - HTTP/1.1 200 OK - Content-Type: application/json - { - "server_name": "this.server.example.com" - "signature_verify_key": # base64 encoded NACL verification key. - "tls_certificate": # base64 ASN.1 DER encoded X.509 tls cert. - "signatures": { - "this.server.example.com": # NACL signature for this server. - } - } - """ - - def __init__(self, key_server): - self.key_server = key_server - self.response_body = encode_canonical_json( - self.response_json_object(key_server) - ) - Resource.__init__(self) - - @staticmethod - def response_json_object(key_server): - verify_key_bytes = key_server.signing_key.verify_key.encode() - x509_certificate_bytes = crypto.dump_certificate( - crypto.FILETYPE_ASN1, - key_server.tls_certificate - ) - json_object = { - u"server_name": key_server.server_name, - u"signature_verify_key": encode_base64(verify_key_bytes), - u"tls_certificate": encode_base64(x509_certificate_bytes) - } - signed_json = sign_json( - json_object, - key_server.server_name, - key_server.signing_key - ) - return signed_json - - def getChild(self, name, request): - logger.info("getChild %s %s", name, request) - if name == '': - return self - else: - return RemoteKey(name, self.key_server) - - def render_GET(self, request): - return respond_with_json_bytes(request, 200, self.response_body) - - -class RemoteKey(Resource): - """HTTP resource for retreiving the TLS certificate and NACL signature - verification keys for a another server. Checks that the reported X.509 TLS - certificate matches the one used in the HTTPS connection. Checks that the - NACL signature for the remote server is valid. Returns JSON signed by both - the remote server and by this server. - - GET /key/remote.server.example.com HTTP/1.1 - - HTTP/1.1 200 OK - Content-Type: application/json - { - "server_name": "remote.server.example.com" - "signature_verify_key": # base64 encoded NACL verification key. - "tls_certificate": # base64 ASN.1 DER encoded X.509 tls cert. - "signatures": { - "remote.server.example.com": # NACL signature for remote server. - "this.server.example.com": # NACL signature for this server. - } - } - """ - - isLeaf = True - - def __init__(self, server_name, key_server): - self.server_name = server_name - self.key_server = key_server - Resource.__init__(self) - - def render_GET(self, request): - self._async_render_GET(request) - return NOT_DONE_YET - - @defer.inlineCallbacks - def _async_render_GET(self, request): - try: - server_keys, certificate = yield fetch_server_key( - self.server_name, - self.key_server.ssl_context_factory - ) - - resp_server_name = server_keys[u"server_name"] - verify_key_b64 = server_keys[u"signature_verify_key"] - tls_certificate_b64 = server_keys[u"tls_certificate"] - verify_key = VerifyKey(decode_base64(verify_key_b64)) - - if resp_server_name != self.server_name: - raise ValueError("Wrong server name '%s' != '%s'" % - (resp_server_name, self.server_name)) - - x509_certificate_bytes = crypto.dump_certificate( - crypto.FILETYPE_ASN1, - certificate - ) - - if encode_base64(x509_certificate_bytes) != tls_certificate_b64: - raise ValueError("TLS certificate doesn't match") - - verify_signed_json(server_keys, self.server_name, verify_key) - - signed_json = sign_json( - server_keys, - self.key_server.server_name, - self.key_server.signing_key - ) - - json_bytes = encode_canonical_json(signed_json) - respond_with_json_bytes(request, 200, json_bytes) - - except Exception as e: - json_bytes = encode_canonical_json({ - u"error": {u"code": 502, u"message": e.message} - }) - respond_with_json_bytes(request, 502, json_bytes) |