Merge pull request #5726 from matrix-org/uhoreg/e2e_cross-signing2-part2
Cross-signing [3/4] -- uploading signatures edition
This commit is contained in:
Hubert Chathi
GitHub
commit
2761731634
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@ -0,0 +1 @@
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Add ability to upload cross-signing signatures.
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@ -19,12 +19,15 @@ import logging
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from six import iteritems
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import attr
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from canonicaljson import encode_canonical_json, json
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from signedjson.key import decode_verify_key_bytes
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from signedjson.sign import SignatureVerifyException, verify_signed_json
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from unpaddedbase64 import decode_base64
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from twisted.internet import defer
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from synapse.api.errors import CodeMessageException, Codes, SynapseError
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from synapse.api.errors import CodeMessageException, Codes, NotFoundError, SynapseError
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from synapse.logging.context import make_deferred_yieldable, run_in_background
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from synapse.logging.opentracing import log_kv, set_tag, tag_args, trace
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from synapse.types import (
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@ -602,6 +605,339 @@ class E2eKeysHandler(object):
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return {}
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@defer.inlineCallbacks
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def upload_signatures_for_device_keys(self, user_id, signatures):
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"""Upload device signatures for cross-signing
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Args:
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user_id (string): the user uploading the signatures
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signatures (dict[string, dict[string, dict]]): map of users to
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devices to signed keys. This is the submission from the user; an
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exception will be raised if it is malformed.
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Returns:
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dict: response to be sent back to the client. The response will have
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a "failures" key, which will be a dict mapping users to devices
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to errors for the signatures that failed.
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Raises:
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SynapseError: if the signatures dict is not valid.
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"""
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failures = {}
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# signatures to be stored. Each item will be a SignatureListItem
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signature_list = []
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# split between checking signatures for own user and signatures for
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# other users, since we verify them with different keys
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self_signatures = signatures.get(user_id, {})
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other_signatures = {k: v for k, v in signatures.items() if k != user_id}
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self_signature_list, self_failures = yield self._process_self_signatures(
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user_id, self_signatures
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)
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signature_list.extend(self_signature_list)
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failures.update(self_failures)
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other_signature_list, other_failures = yield self._process_other_signatures(
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user_id, other_signatures
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)
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signature_list.extend(other_signature_list)
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failures.update(other_failures)
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# store the signature, and send the appropriate notifications for sync
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logger.debug("upload signature failures: %r", failures)
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yield self.store.store_e2e_cross_signing_signatures(user_id, signature_list)
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self_device_ids = [item.target_device_id for item in self_signature_list]
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if self_device_ids:
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yield self.device_handler.notify_device_update(user_id, self_device_ids)
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signed_users = [item.target_user_id for item in other_signature_list]
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if signed_users:
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yield self.device_handler.notify_user_signature_update(
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user_id, signed_users
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)
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return {"failures": failures}
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@defer.inlineCallbacks
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def _process_self_signatures(self, user_id, signatures):
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"""Process uploaded signatures of the user's own keys.
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Signatures of the user's own keys from this API come in two forms:
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- signatures of the user's devices by the user's self-signing key,
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- signatures of the user's master key by the user's devices.
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Args:
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user_id (string): the user uploading the keys
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signatures (dict[string, dict]): map of devices to signed keys
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Returns:
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(list[SignatureListItem], dict[string, dict[string, dict]]):
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a list of signatures to store, and a map of users to devices to failure
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reasons
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Raises:
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SynapseError: if the input is malformed
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"""
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signature_list = []
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failures = {}
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if not signatures:
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return signature_list, failures
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if not isinstance(signatures, dict):
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raise SynapseError(400, "Invalid parameter", Codes.INVALID_PARAM)
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try:
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# get our self-signing key to verify the signatures
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_, self_signing_key_id, self_signing_verify_key = yield self._get_e2e_cross_signing_verify_key(
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user_id, "self_signing"
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)
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# get our master key, since we may have received a signature of it.
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# We need to fetch it here so that we know what its key ID is, so
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# that we can check if a signature that was sent is a signature of
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# the master key or of a device
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master_key, _, master_verify_key = yield self._get_e2e_cross_signing_verify_key(
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user_id, "master"
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)
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# fetch our stored devices. This is used to 1. verify
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# signatures on the master key, and 2. to compare with what
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# was sent if the device was signed
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devices = yield self.store.get_e2e_device_keys([(user_id, None)])
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if user_id not in devices:
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raise NotFoundError("No device keys found")
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devices = devices[user_id]
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except SynapseError as e:
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failure = _exception_to_failure(e)
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failures[user_id] = {device: failure for device in signatures.keys()}
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return signature_list, failures
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for device_id, device in signatures.items():
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# make sure submitted data is in the right form
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if not isinstance(device, dict):
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raise SynapseError(400, "Invalid parameter", Codes.INVALID_PARAM)
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try:
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if "signatures" not in device or user_id not in device["signatures"]:
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# no signature was sent
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raise SynapseError(
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400, "Invalid signature", Codes.INVALID_SIGNATURE
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)
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if device_id == master_verify_key.version:
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# The signature is of the master key. This needs to be
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# handled differently from signatures of normal devices.
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master_key_signature_list = self._check_master_key_signature(
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user_id, device_id, device, master_key, devices
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)
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signature_list.extend(master_key_signature_list)
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continue
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# at this point, we have a device that should be signed
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# by the self-signing key
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if self_signing_key_id not in device["signatures"][user_id]:
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# no signature was sent
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raise SynapseError(
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400, "Invalid signature", Codes.INVALID_SIGNATURE
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)
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try:
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stored_device = devices[device_id]
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except KeyError:
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raise NotFoundError("Unknown device")
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if self_signing_key_id in stored_device.get("signatures", {}).get(
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user_id, {}
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):
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# we already have a signature on this device, so we
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# can skip it, since it should be exactly the same
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continue
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_check_device_signature(
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user_id, self_signing_verify_key, device, stored_device
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)
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signature = device["signatures"][user_id][self_signing_key_id]
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signature_list.append(
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SignatureListItem(
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self_signing_key_id, user_id, device_id, signature
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)
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)
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except SynapseError as e:
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failures.setdefault(user_id, {})[device_id] = _exception_to_failure(e)
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return signature_list, failures
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def _check_master_key_signature(
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self, user_id, master_key_id, signed_master_key, stored_master_key, devices
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):
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"""Check signatures of a user's master key made by their devices.
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Args:
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user_id (string): the user whose master key is being checked
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master_key_id (string): the ID of the user's master key
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signed_master_key (dict): the user's signed master key that was uploaded
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stored_master_key (dict): our previously-stored copy of the user's master key
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devices (iterable(dict)): the user's devices
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Returns:
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list[SignatureListItem]: a list of signatures to store
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Raises:
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SynapseError: if a signature is invalid
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"""
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# for each device that signed the master key, check the signature.
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master_key_signature_list = []
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sigs = signed_master_key["signatures"]
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for signing_key_id, signature in sigs[user_id].items():
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_, signing_device_id = signing_key_id.split(":", 1)
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if (
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signing_device_id not in devices
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or signing_key_id not in devices[signing_device_id]["keys"]
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):
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# signed by an unknown device, or the
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# device does not have the key
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raise SynapseError(400, "Invalid signature", Codes.INVALID_SIGNATURE)
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# get the key and check the signature
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pubkey = devices[signing_device_id]["keys"][signing_key_id]
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verify_key = decode_verify_key_bytes(signing_key_id, decode_base64(pubkey))
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_check_device_signature(
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user_id, verify_key, signed_master_key, stored_master_key
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)
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master_key_signature_list.append(
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SignatureListItem(signing_key_id, user_id, master_key_id, signature)
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)
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return master_key_signature_list
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@defer.inlineCallbacks
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def _process_other_signatures(self, user_id, signatures):
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"""Process uploaded signatures of other users' keys. These will be the
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target user's master keys, signed by the uploading user's user-signing
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key.
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Args:
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user_id (string): the user uploading the keys
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signatures (dict[string, dict]): map of users to devices to signed keys
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Returns:
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(list[SignatureListItem], dict[string, dict[string, dict]]):
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a list of signatures to store, and a map of users to devices to failure
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reasons
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Raises:
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SynapseError: if the input is malformed
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"""
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signature_list = []
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failures = {}
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if not signatures:
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return signature_list, failures
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try:
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# get our user-signing key to verify the signatures
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user_signing_key, user_signing_key_id, user_signing_verify_key = yield self._get_e2e_cross_signing_verify_key(
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user_id, "user_signing"
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)
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except SynapseError as e:
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failure = _exception_to_failure(e)
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for user, devicemap in signatures.items():
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failures[user] = {device_id: failure for device_id in devicemap.keys()}
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return signature_list, failures
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for target_user, devicemap in signatures.items():
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# make sure submitted data is in the right form
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if not isinstance(devicemap, dict):
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raise SynapseError(400, "Invalid parameter", Codes.INVALID_PARAM)
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for device in devicemap.values():
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if not isinstance(device, dict):
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raise SynapseError(400, "Invalid parameter", Codes.INVALID_PARAM)
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device_id = None
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try:
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# get the target user's master key, to make sure it matches
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# what was sent
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master_key, master_key_id, _ = yield self._get_e2e_cross_signing_verify_key(
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target_user, "master", user_id
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)
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# make sure that the target user's master key is the one that
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# was signed (and no others)
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device_id = master_key_id.split(":", 1)[1]
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if device_id not in devicemap:
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logger.debug(
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"upload signature: could not find signature for device %s",
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device_id,
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)
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# set device to None so that the failure gets
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# marked on all the signatures
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device_id = None
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raise NotFoundError("Unknown device")
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key = devicemap[device_id]
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other_devices = [k for k in devicemap.keys() if k != device_id]
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if other_devices:
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# other devices were signed -- mark those as failures
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logger.debug("upload signature: too many devices specified")
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failure = _exception_to_failure(NotFoundError("Unknown device"))
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failures[target_user] = {
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device: failure for device in other_devices
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}
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if user_signing_key_id in master_key.get("signatures", {}).get(
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user_id, {}
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):
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# we already have the signature, so we can skip it
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continue
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_check_device_signature(
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user_id, user_signing_verify_key, key, master_key
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)
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signature = key["signatures"][user_id][user_signing_key_id]
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signature_list.append(
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SignatureListItem(
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user_signing_key_id, target_user, device_id, signature
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)
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)
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except SynapseError as e:
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failure = _exception_to_failure(e)
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if device_id is None:
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failures[target_user] = {
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device_id: failure for device_id in devicemap.keys()
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}
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else:
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failures.setdefault(target_user, {})[device_id] = failure
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return signature_list, failures
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@defer.inlineCallbacks
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def _get_e2e_cross_signing_verify_key(self, user_id, key_type, from_user_id=None):
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"""Fetch the cross-signing public key from storage and interpret it.
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Args:
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user_id (str): the user whose key should be fetched
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key_type (str): the type of key to fetch
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from_user_id (str): the user that we are fetching the keys for.
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This affects what signatures are fetched.
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Returns:
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dict, str, VerifyKey: the raw key data, the key ID, and the
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signedjson verify key
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Raises:
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NotFoundError: if the key is not found
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"""
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key = yield self.store.get_e2e_cross_signing_key(
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user_id, key_type, from_user_id
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)
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if key is None:
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logger.debug("no %s key found for %s", key_type, user_id)
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raise NotFoundError("No %s key found for %s" % (key_type, user_id))
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key_id, verify_key = get_verify_key_from_cross_signing_key(key)
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return key, key_id, verify_key
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def _check_cross_signing_key(key, user_id, key_type, signing_key=None):
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"""Check a cross-signing key uploaded by a user. Performs some basic sanity
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@ -630,7 +966,49 @@ def _check_cross_signing_key(key, user_id, key_type, signing_key=None):
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)
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def _check_device_signature(user_id, verify_key, signed_device, stored_device):
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"""Check that a signature on a device or cross-signing key is correct and
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matches the copy of the device/key that we have stored. Throws an
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exception if an error is detected.
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Args:
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user_id (str): the user ID whose signature is being checked
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verify_key (VerifyKey): the key to verify the device with
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signed_device (dict): the uploaded signed device data
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stored_device (dict): our previously stored copy of the device
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Raises:
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SynapseError: if the signature was invalid or the sent device is not the
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same as the stored device
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"""
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# make sure that the device submitted matches what we have stored
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stripped_signed_device = {
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k: v for k, v in signed_device.items() if k not in ["signatures", "unsigned"]
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}
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stripped_stored_device = {
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k: v for k, v in stored_device.items() if k not in ["signatures", "unsigned"]
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}
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if stripped_signed_device != stripped_stored_device:
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logger.debug(
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"upload signatures: key does not match %s vs %s",
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signed_device,
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stored_device,
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)
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raise SynapseError(400, "Key does not match")
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try:
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verify_signed_json(signed_device, user_id, verify_key)
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except SignatureVerifyException:
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logger.debug("invalid signature on key")
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raise SynapseError(400, "Invalid signature", Codes.INVALID_SIGNATURE)
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def _exception_to_failure(e):
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if isinstance(e, SynapseError):
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return {"status": e.code, "errcode": e.errcode, "message": str(e)}
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if isinstance(e, CodeMessageException):
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return {"status": e.code, "message": str(e)}
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|
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@ -658,3 +1036,14 @@ def _one_time_keys_match(old_key_json, new_key):
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new_key_copy.pop("signatures", None)
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return old_key == new_key_copy
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@attr.s
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class SignatureListItem:
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"""An item in the signature list as used by upload_signatures_for_device_keys.
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"""
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signing_key_id = attr.ib()
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target_user_id = attr.ib()
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target_device_id = attr.ib()
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signature = attr.ib()
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|
|
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|
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@ -274,7 +274,57 @@ class SigningKeyUploadServlet(RestServlet):
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)
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result = yield self.e2e_keys_handler.upload_signing_keys_for_user(user_id, body)
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return (200, result)
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return 200, result
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class SignaturesUploadServlet(RestServlet):
|
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"""
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POST /keys/signatures/upload HTTP/1.1
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Content-Type: application/json
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{
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"@alice:example.com": {
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"<device_id>": {
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"user_id": "<user_id>",
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"device_id": "<device_id>",
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"algorithms": [
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"m.olm.curve25519-aes-sha256",
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"m.megolm.v1.aes-sha"
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],
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"keys": {
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"<algorithm>:<device_id>": "<key_base64>",
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},
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"signatures": {
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"<signing_user_id>": {
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"<algorithm>:<signing_key_base64>": "<signature_base64>>"
|
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}
|
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}
|
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}
|
||||
}
|
||||
}
|
||||
"""
|
||||
|
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PATTERNS = client_patterns("/keys/signatures/upload$")
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def __init__(self, hs):
|
||||
"""
|
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Args:
|
||||
hs (synapse.server.HomeServer): server
|
||||
"""
|
||||
super(SignaturesUploadServlet, self).__init__()
|
||||
self.auth = hs.get_auth()
|
||||
self.e2e_keys_handler = hs.get_e2e_keys_handler()
|
||||
|
||||
@defer.inlineCallbacks
|
||||
def on_POST(self, request):
|
||||
requester = yield self.auth.get_user_by_req(request, allow_guest=True)
|
||||
user_id = requester.user.to_string()
|
||||
body = parse_json_object_from_request(request)
|
||||
|
||||
result = yield self.e2e_keys_handler.upload_signatures_for_device_keys(
|
||||
user_id, body
|
||||
)
|
||||
return 200, result
|
||||
|
||||
|
||||
def register_servlets(hs, http_server):
|
||||
|
|
@ -283,3 +333,4 @@ def register_servlets(hs, http_server):
|
|||
KeyChangesServlet(hs).register(http_server)
|
||||
OneTimeKeyServlet(hs).register(http_server)
|
||||
SigningKeyUploadServlet(hs).register(http_server)
|
||||
SignaturesUploadServlet(hs).register(http_server)
|
||||
|
|
|
|||
|
|
@ -68,6 +68,11 @@ class EndToEndKeyWorkerStore(SQLBaseStore):
|
|||
display_name = device_info["device_display_name"]
|
||||
if display_name is not None:
|
||||
r["unsigned"]["device_display_name"] = display_name
|
||||
if "signatures" in device_info:
|
||||
for sig_user_id, sigs in device_info["signatures"].items():
|
||||
r.setdefault("signatures", {}).setdefault(
|
||||
sig_user_id, {}
|
||||
).update(sigs)
|
||||
rv[user_id][device_id] = r
|
||||
|
||||
return rv
|
||||
|
|
@ -81,6 +86,8 @@ class EndToEndKeyWorkerStore(SQLBaseStore):
|
|||
|
||||
query_clauses = []
|
||||
query_params = []
|
||||
signature_query_clauses = []
|
||||
signature_query_params = []
|
||||
|
||||
if include_all_devices is False:
|
||||
include_deleted_devices = False
|
||||
|
|
@ -91,12 +98,20 @@ class EndToEndKeyWorkerStore(SQLBaseStore):
|
|||
for (user_id, device_id) in query_list:
|
||||
query_clause = "user_id = ?"
|
||||
query_params.append(user_id)
|
||||
signature_query_clause = "target_user_id = ?"
|
||||
signature_query_params.append(user_id)
|
||||
|
||||
if device_id is not None:
|
||||
query_clause += " AND device_id = ?"
|
||||
query_params.append(device_id)
|
||||
signature_query_clause += " AND target_device_id = ?"
|
||||
signature_query_params.append(device_id)
|
||||
|
||||
signature_query_clause += " AND user_id = ?"
|
||||
signature_query_params.append(user_id)
|
||||
|
||||
query_clauses.append(query_clause)
|
||||
signature_query_clauses.append(signature_query_clause)
|
||||
|
||||
sql = (
|
||||
"SELECT user_id, device_id, "
|
||||
|
|
@ -123,6 +138,22 @@ class EndToEndKeyWorkerStore(SQLBaseStore):
|
|||
for user_id, device_id in deleted_devices:
|
||||
result.setdefault(user_id, {})[device_id] = None
|
||||
|
||||
# get signatures on the device
|
||||
signature_sql = (
|
||||
"SELECT * " " FROM e2e_cross_signing_signatures " " WHERE %s"
|
||||
) % (" OR ".join("(" + q + ")" for q in signature_query_clauses))
|
||||
|
||||
txn.execute(signature_sql, signature_query_params)
|
||||
rows = self.cursor_to_dict(txn)
|
||||
|
||||
for row in rows:
|
||||
target_user_id = row["target_user_id"]
|
||||
target_device_id = row["target_device_id"]
|
||||
if target_user_id in result and target_device_id in result[target_user_id]:
|
||||
result[target_user_id][target_device_id].setdefault(
|
||||
"signatures", {}
|
||||
).setdefault(row["user_id"], {})[row["key_id"]] = row["signature"]
|
||||
|
||||
log_kv(result)
|
||||
return result
|
||||
|
||||
|
|
@ -468,24 +499,19 @@ class EndToEndKeyStore(EndToEndKeyWorkerStore, SQLBaseStore):
|
|||
|
||||
Args:
|
||||
user_id (str): the user who made the signatures
|
||||
signatures (iterable[(str, str, str, str)]): signatures to add - each
|
||||
a tuple of (key_id, target_user_id, target_device_id, signature),
|
||||
where key_id is the ID of the key (including the signature
|
||||
algorithm) that made the signature, target_user_id and
|
||||
target_device_id indicate the device being signed, and signature
|
||||
is the signature of the device
|
||||
signatures (iterable[SignatureListItem]): signatures to add
|
||||
"""
|
||||
return self._simple_insert_many(
|
||||
"e2e_cross_signing_signatures",
|
||||
[
|
||||
{
|
||||
"user_id": user_id,
|
||||
"key_id": key_id,
|
||||
"target_user_id": target_user_id,
|
||||
"target_device_id": target_device_id,
|
||||
"signature": signature,
|
||||
"key_id": item.signing_key_id,
|
||||
"target_user_id": item.target_user_id,
|
||||
"target_device_id": item.target_device_id,
|
||||
"signature": item.signature,
|
||||
}
|
||||
for (key_id, target_user_id, target_device_id, signature) in signatures
|
||||
for item in signatures
|
||||
],
|
||||
"add_e2e_signing_key",
|
||||
)
|
||||
|
|
|
|||
|
|
@ -17,9 +17,11 @@
|
|||
|
||||
import mock
|
||||
|
||||
import signedjson.key as key
|
||||
import signedjson.sign as sign
|
||||
|
||||
from twisted.internet import defer
|
||||
|
||||
import synapse.api.errors
|
||||
import synapse.handlers.e2e_keys
|
||||
import synapse.storage
|
||||
from synapse.api import errors
|
||||
|
|
@ -181,6 +183,96 @@ class E2eKeysHandlerTestCase(unittest.TestCase):
|
|||
)
|
||||
self.assertDictEqual(devices["master_keys"], {local_user: keys2["master_key"]})
|
||||
|
||||
@defer.inlineCallbacks
|
||||
def test_reupload_signatures(self):
|
||||
"""re-uploading a signature should not fail"""
|
||||
local_user = "@boris:" + self.hs.hostname
|
||||
keys1 = {
|
||||
"master_key": {
|
||||
# private key: HvQBbU+hc2Zr+JP1sE0XwBe1pfZZEYtJNPJLZJtS+F8
|
||||
"user_id": local_user,
|
||||
"usage": ["master"],
|
||||
"keys": {
|
||||
"ed25519:EmkqvokUn8p+vQAGZitOk4PWjp7Ukp3txV2TbMPEiBQ": "EmkqvokUn8p+vQAGZitOk4PWjp7Ukp3txV2TbMPEiBQ"
|
||||
},
|
||||
},
|
||||
"self_signing_key": {
|
||||
# private key: 2lonYOM6xYKdEsO+6KrC766xBcHnYnim1x/4LFGF8B0
|
||||
"user_id": local_user,
|
||||
"usage": ["self_signing"],
|
||||
"keys": {
|
||||
"ed25519:nqOvzeuGWT/sRx3h7+MHoInYj3Uk2LD/unI9kDYcHwk": "nqOvzeuGWT/sRx3h7+MHoInYj3Uk2LD/unI9kDYcHwk"
|
||||
},
|
||||
},
|
||||
}
|
||||
master_signing_key = key.decode_signing_key_base64(
|
||||
"ed25519",
|
||||
"EmkqvokUn8p+vQAGZitOk4PWjp7Ukp3txV2TbMPEiBQ",
|
||||
"HvQBbU+hc2Zr+JP1sE0XwBe1pfZZEYtJNPJLZJtS+F8",
|
||||
)
|
||||
sign.sign_json(keys1["self_signing_key"], local_user, master_signing_key)
|
||||
signing_key = key.decode_signing_key_base64(
|
||||
"ed25519",
|
||||
"nqOvzeuGWT/sRx3h7+MHoInYj3Uk2LD/unI9kDYcHwk",
|
||||
"2lonYOM6xYKdEsO+6KrC766xBcHnYnim1x/4LFGF8B0",
|
||||
)
|
||||
yield self.handler.upload_signing_keys_for_user(local_user, keys1)
|
||||
|
||||
# upload two device keys, which will be signed later by the self-signing key
|
||||
device_key_1 = {
|
||||
"user_id": local_user,
|
||||
"device_id": "abc",
|
||||
"algorithms": ["m.olm.curve25519-aes-sha256", "m.megolm.v1.aes-sha"],
|
||||
"keys": {
|
||||
"ed25519:abc": "base64+ed25519+key",
|
||||
"curve25519:abc": "base64+curve25519+key",
|
||||
},
|
||||
"signatures": {local_user: {"ed25519:abc": "base64+signature"}},
|
||||
}
|
||||
device_key_2 = {
|
||||
"user_id": local_user,
|
||||
"device_id": "def",
|
||||
"algorithms": ["m.olm.curve25519-aes-sha256", "m.megolm.v1.aes-sha"],
|
||||
"keys": {
|
||||
"ed25519:def": "base64+ed25519+key",
|
||||
"curve25519:def": "base64+curve25519+key",
|
||||
},
|
||||
"signatures": {local_user: {"ed25519:def": "base64+signature"}},
|
||||
}
|
||||
|
||||
yield self.handler.upload_keys_for_user(
|
||||
local_user, "abc", {"device_keys": device_key_1}
|
||||
)
|
||||
yield self.handler.upload_keys_for_user(
|
||||
local_user, "def", {"device_keys": device_key_2}
|
||||
)
|
||||
|
||||
# sign the first device key and upload it
|
||||
del device_key_1["signatures"]
|
||||
sign.sign_json(device_key_1, local_user, signing_key)
|
||||
yield self.handler.upload_signatures_for_device_keys(
|
||||
local_user, {local_user: {"abc": device_key_1}}
|
||||
)
|
||||
|
||||
# sign the second device key and upload both device keys. The server
|
||||
# should ignore the first device key since it already has a valid
|
||||
# signature for it
|
||||
del device_key_2["signatures"]
|
||||
sign.sign_json(device_key_2, local_user, signing_key)
|
||||
yield self.handler.upload_signatures_for_device_keys(
|
||||
local_user, {local_user: {"abc": device_key_1, "def": device_key_2}}
|
||||
)
|
||||
|
||||
device_key_1["signatures"][local_user]["ed25519:abc"] = "base64+signature"
|
||||
device_key_2["signatures"][local_user]["ed25519:def"] = "base64+signature"
|
||||
devices = yield self.handler.query_devices(
|
||||
{"device_keys": {local_user: []}}, 0, local_user
|
||||
)
|
||||
del devices["device_keys"][local_user]["abc"]["unsigned"]
|
||||
del devices["device_keys"][local_user]["def"]["unsigned"]
|
||||
self.assertDictEqual(devices["device_keys"][local_user]["abc"], device_key_1)
|
||||
self.assertDictEqual(devices["device_keys"][local_user]["def"], device_key_2)
|
||||
|
||||
@defer.inlineCallbacks
|
||||
def test_self_signing_key_doesnt_show_up_as_device(self):
|
||||
"""signing keys should be hidden when fetching a user's devices"""
|
||||
|
|
@ -210,3 +302,204 @@ class E2eKeysHandlerTestCase(unittest.TestCase):
|
|||
|
||||
res = yield self.handler.query_local_devices({local_user: None})
|
||||
self.assertDictEqual(res, {local_user: {}})
|
||||
|
||||
@defer.inlineCallbacks
|
||||
def test_upload_signatures(self):
|
||||
"""should check signatures that are uploaded"""
|
||||
# set up a user with cross-signing keys and a device. This user will
|
||||
# try uploading signatures
|
||||
local_user = "@boris:" + self.hs.hostname
|
||||
device_id = "xyz"
|
||||
# private key: OMkooTr76ega06xNvXIGPbgvvxAOzmQncN8VObS7aBA
|
||||
device_pubkey = "NnHhnqiMFQkq969szYkooLaBAXW244ZOxgukCvm2ZeY"
|
||||
device_key = {
|
||||
"user_id": local_user,
|
||||
"device_id": device_id,
|
||||
"algorithms": ["m.olm.curve25519-aes-sha256", "m.megolm.v1.aes-sha"],
|
||||
"keys": {"curve25519:xyz": "curve25519+key", "ed25519:xyz": device_pubkey},
|
||||
"signatures": {local_user: {"ed25519:xyz": "something"}},
|
||||
}
|
||||
device_signing_key = key.decode_signing_key_base64(
|
||||
"ed25519", "xyz", "OMkooTr76ega06xNvXIGPbgvvxAOzmQncN8VObS7aBA"
|
||||
)
|
||||
|
||||
yield self.handler.upload_keys_for_user(
|
||||
local_user, device_id, {"device_keys": device_key}
|
||||
)
|
||||
|
||||
# private key: 2lonYOM6xYKdEsO+6KrC766xBcHnYnim1x/4LFGF8B0
|
||||
master_pubkey = "nqOvzeuGWT/sRx3h7+MHoInYj3Uk2LD/unI9kDYcHwk"
|
||||
master_key = {
|
||||
"user_id": local_user,
|
||||
"usage": ["master"],
|
||||
"keys": {"ed25519:" + master_pubkey: master_pubkey},
|
||||
}
|
||||
master_signing_key = key.decode_signing_key_base64(
|
||||
"ed25519", master_pubkey, "2lonYOM6xYKdEsO+6KrC766xBcHnYnim1x/4LFGF8B0"
|
||||
)
|
||||
usersigning_pubkey = "Hq6gL+utB4ET+UvD5ci0kgAwsX6qP/zvf8v6OInU5iw"
|
||||
usersigning_key = {
|
||||
# private key: 4TL4AjRYwDVwD3pqQzcor+ez/euOB1/q78aTJ+czDNs
|
||||
"user_id": local_user,
|
||||
"usage": ["user_signing"],
|
||||
"keys": {"ed25519:" + usersigning_pubkey: usersigning_pubkey},
|
||||
}
|
||||
usersigning_signing_key = key.decode_signing_key_base64(
|
||||
"ed25519", usersigning_pubkey, "4TL4AjRYwDVwD3pqQzcor+ez/euOB1/q78aTJ+czDNs"
|
||||
)
|
||||
sign.sign_json(usersigning_key, local_user, master_signing_key)
|
||||
# private key: HvQBbU+hc2Zr+JP1sE0XwBe1pfZZEYtJNPJLZJtS+F8
|
||||
selfsigning_pubkey = "EmkqvokUn8p+vQAGZitOk4PWjp7Ukp3txV2TbMPEiBQ"
|
||||
selfsigning_key = {
|
||||
"user_id": local_user,
|
||||
"usage": ["self_signing"],
|
||||
"keys": {"ed25519:" + selfsigning_pubkey: selfsigning_pubkey},
|
||||
}
|
||||
selfsigning_signing_key = key.decode_signing_key_base64(
|
||||
"ed25519", selfsigning_pubkey, "HvQBbU+hc2Zr+JP1sE0XwBe1pfZZEYtJNPJLZJtS+F8"
|
||||
)
|
||||
sign.sign_json(selfsigning_key, local_user, master_signing_key)
|
||||
cross_signing_keys = {
|
||||
"master_key": master_key,
|
||||
"user_signing_key": usersigning_key,
|
||||
"self_signing_key": selfsigning_key,
|
||||
}
|
||||
yield self.handler.upload_signing_keys_for_user(local_user, cross_signing_keys)
|
||||
|
||||
# set up another user with a master key. This user will be signed by
|
||||
# the first user
|
||||
other_user = "@otherboris:" + self.hs.hostname
|
||||
other_master_pubkey = "fHZ3NPiKxoLQm5OoZbKa99SYxprOjNs4TwJUKP+twCM"
|
||||
other_master_key = {
|
||||
# private key: oyw2ZUx0O4GifbfFYM0nQvj9CL0b8B7cyN4FprtK8OI
|
||||
"user_id": other_user,
|
||||
"usage": ["master"],
|
||||
"keys": {"ed25519:" + other_master_pubkey: other_master_pubkey},
|
||||
}
|
||||
yield self.handler.upload_signing_keys_for_user(
|
||||
other_user, {"master_key": other_master_key}
|
||||
)
|
||||
|
||||
# test various signature failures (see below)
|
||||
ret = yield self.handler.upload_signatures_for_device_keys(
|
||||
local_user,
|
||||
{
|
||||
local_user: {
|
||||
# fails because the signature is invalid
|
||||
# should fail with INVALID_SIGNATURE
|
||||
device_id: {
|
||||
"user_id": local_user,
|
||||
"device_id": device_id,
|
||||
"algorithms": [
|
||||
"m.olm.curve25519-aes-sha256",
|
||||
"m.megolm.v1.aes-sha",
|
||||
],
|
||||
"keys": {
|
||||
"curve25519:xyz": "curve25519+key",
|
||||
# private key: OMkooTr76ega06xNvXIGPbgvvxAOzmQncN8VObS7aBA
|
||||
"ed25519:xyz": device_pubkey,
|
||||
},
|
||||
"signatures": {
|
||||
local_user: {"ed25519:" + selfsigning_pubkey: "something"}
|
||||
},
|
||||
},
|
||||
# fails because device is unknown
|
||||
# should fail with NOT_FOUND
|
||||
"unknown": {
|
||||
"user_id": local_user,
|
||||
"device_id": "unknown",
|
||||
"signatures": {
|
||||
local_user: {"ed25519:" + selfsigning_pubkey: "something"}
|
||||
},
|
||||
},
|
||||
# fails because the signature is invalid
|
||||
# should fail with INVALID_SIGNATURE
|
||||
master_pubkey: {
|
||||
"user_id": local_user,
|
||||
"usage": ["master"],
|
||||
"keys": {"ed25519:" + master_pubkey: master_pubkey},
|
||||
"signatures": {
|
||||
local_user: {"ed25519:" + device_pubkey: "something"}
|
||||
},
|
||||
},
|
||||
},
|
||||
other_user: {
|
||||
# fails because the device is not the user's master-signing key
|
||||
# should fail with NOT_FOUND
|
||||
"unknown": {
|
||||
"user_id": other_user,
|
||||
"device_id": "unknown",
|
||||
"signatures": {
|
||||
local_user: {"ed25519:" + usersigning_pubkey: "something"}
|
||||
},
|
||||
},
|
||||
other_master_pubkey: {
|
||||
# fails because the key doesn't match what the server has
|
||||
# should fail with UNKNOWN
|
||||
"user_id": other_user,
|
||||
"usage": ["master"],
|
||||
"keys": {"ed25519:" + other_master_pubkey: other_master_pubkey},
|
||||
"something": "random",
|
||||
"signatures": {
|
||||
local_user: {"ed25519:" + usersigning_pubkey: "something"}
|
||||
},
|
||||
},
|
||||
},
|
||||
},
|
||||
)
|
||||
|
||||
user_failures = ret["failures"][local_user]
|
||||
self.assertEqual(
|
||||
user_failures[device_id]["errcode"], errors.Codes.INVALID_SIGNATURE
|
||||
)
|
||||
self.assertEqual(
|
||||
user_failures[master_pubkey]["errcode"], errors.Codes.INVALID_SIGNATURE
|
||||
)
|
||||
self.assertEqual(user_failures["unknown"]["errcode"], errors.Codes.NOT_FOUND)
|
||||
|
||||
other_user_failures = ret["failures"][other_user]
|
||||
self.assertEqual(
|
||||
other_user_failures["unknown"]["errcode"], errors.Codes.NOT_FOUND
|
||||
)
|
||||
self.assertEqual(
|
||||
other_user_failures[other_master_pubkey]["errcode"], errors.Codes.UNKNOWN
|
||||
)
|
||||
|
||||
# test successful signatures
|
||||
del device_key["signatures"]
|
||||
sign.sign_json(device_key, local_user, selfsigning_signing_key)
|
||||
sign.sign_json(master_key, local_user, device_signing_key)
|
||||
sign.sign_json(other_master_key, local_user, usersigning_signing_key)
|
||||
ret = yield self.handler.upload_signatures_for_device_keys(
|
||||
local_user,
|
||||
{
|
||||
local_user: {device_id: device_key, master_pubkey: master_key},
|
||||
other_user: {other_master_pubkey: other_master_key},
|
||||
},
|
||||
)
|
||||
|
||||
self.assertEqual(ret["failures"], {})
|
||||
|
||||
# fetch the signed keys/devices and make sure that the signatures are there
|
||||
ret = yield self.handler.query_devices(
|
||||
{"device_keys": {local_user: [], other_user: []}}, 0, local_user
|
||||
)
|
||||
|
||||
self.assertEqual(
|
||||
ret["device_keys"][local_user]["xyz"]["signatures"][local_user][
|
||||
"ed25519:" + selfsigning_pubkey
|
||||
],
|
||||
device_key["signatures"][local_user]["ed25519:" + selfsigning_pubkey],
|
||||
)
|
||||
self.assertEqual(
|
||||
ret["master_keys"][local_user]["signatures"][local_user][
|
||||
"ed25519:" + device_id
|
||||
],
|
||||
master_key["signatures"][local_user]["ed25519:" + device_id],
|
||||
)
|
||||
self.assertEqual(
|
||||
ret["master_keys"][other_user]["signatures"][local_user][
|
||||
"ed25519:" + usersigning_pubkey
|
||||
],
|
||||
other_master_key["signatures"][local_user]["ed25519:" + usersigning_pubkey],
|
||||
)
|
||||
|
|
|
|||
Loading…
Reference in New Issue