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synced 2025-05-03 01:04:49 -04:00
allow uploading signatures of master key signed by devices
This commit is contained in:
Hubert Chathi
parent
4bb4544784
commit
ac4746ac4b
4 changed files with 378 additions and 85 deletions
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@ -17,9 +17,10 @@
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import mock
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import signedjson.key as key
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import signedjson.sign as sign
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from twisted.internet import defer
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import synapse.api.errors
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import synapse.handlers.e2e_keys
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import synapse.storage
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from synapse.api import errors
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@ -210,3 +211,227 @@ class E2eKeysHandlerTestCase(unittest.TestCase):
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res = yield self.handler.query_local_devices({local_user: None})
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self.assertDictEqual(res, {local_user: {}})
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@defer.inlineCallbacks
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def test_upload_signatures(self):
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"""should check signatures that are uploaded"""
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# set up a user with cross-signing keys and a device. This user will
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# try uploading signatures
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local_user = "@boris:" + self.hs.hostname
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device_id = "xyz"
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# private key: OMkooTr76ega06xNvXIGPbgvvxAOzmQncN8VObS7aBA
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device_pubkey = "NnHhnqiMFQkq969szYkooLaBAXW244ZOxgukCvm2ZeY"
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device_key = {
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"user_id": local_user,
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"device_id": device_id,
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"algorithms": ["m.olm.curve25519-aes-sha256", "m.megolm.v1.aes-sha"],
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"keys": {
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"curve25519:xyz": "curve25519+key",
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"ed25519:xyz": device_pubkey
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},
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"signatures": {
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local_user: {
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"ed25519:xyz": "something"
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}
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}
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}
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device_signing_key = key.decode_signing_key_base64(
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"ed25519",
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"xyz",
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"OMkooTr76ega06xNvXIGPbgvvxAOzmQncN8VObS7aBA"
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)
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yield self.handler.upload_keys_for_user(
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local_user, device_id, {"device_keys": device_key}
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)
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# private key: 2lonYOM6xYKdEsO+6KrC766xBcHnYnim1x/4LFGF8B0
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master_pubkey = "nqOvzeuGWT/sRx3h7+MHoInYj3Uk2LD/unI9kDYcHwk"
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master_key = {
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"user_id": local_user,
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"usage": ["master"],
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"keys": {
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"ed25519:" + master_pubkey: master_pubkey
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}
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}
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master_signing_key = key.decode_signing_key_base64(
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"ed25519", master_pubkey,
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"2lonYOM6xYKdEsO+6KrC766xBcHnYnim1x/4LFGF8B0"
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)
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usersigning_pubkey = "Hq6gL+utB4ET+UvD5ci0kgAwsX6qP/zvf8v6OInU5iw"
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usersigning_key = {
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# private key: 4TL4AjRYwDVwD3pqQzcor+ez/euOB1/q78aTJ+czDNs
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"user_id": local_user,
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"usage": ["user_signing"],
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"keys": {
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"ed25519:" + usersigning_pubkey: usersigning_pubkey,
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}
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}
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usersigning_signing_key = key.decode_signing_key_base64(
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"ed25519", usersigning_pubkey,
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"4TL4AjRYwDVwD3pqQzcor+ez/euOB1/q78aTJ+czDNs"
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)
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sign.sign_json(usersigning_key, local_user, master_signing_key)
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# private key: HvQBbU+hc2Zr+JP1sE0XwBe1pfZZEYtJNPJLZJtS+F8
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selfsigning_pubkey = "EmkqvokUn8p+vQAGZitOk4PWjp7Ukp3txV2TbMPEiBQ"
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selfsigning_key = {
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"user_id": local_user,
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"usage": ["self_signing"],
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"keys": {
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"ed25519:" + selfsigning_pubkey: selfsigning_pubkey,
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}
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}
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selfsigning_signing_key = key.decode_signing_key_base64(
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"ed25519", selfsigning_pubkey,
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"HvQBbU+hc2Zr+JP1sE0XwBe1pfZZEYtJNPJLZJtS+F8"
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)
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sign.sign_json(selfsigning_key, local_user, master_signing_key)
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cross_signing_keys = {
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"master_key": master_key,
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"user_signing_key": usersigning_key,
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"self_signing_key": selfsigning_key,
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}
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yield self.handler.upload_signing_keys_for_user(local_user, cross_signing_keys)
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# set up another user with a master key. This user will be signed by
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# the first user
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other_user = "@otherboris:" + self.hs.hostname
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other_master_pubkey = "fHZ3NPiKxoLQm5OoZbKa99SYxprOjNs4TwJUKP+twCM"
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other_master_key = {
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# private key: oyw2ZUx0O4GifbfFYM0nQvj9CL0b8B7cyN4FprtK8OI
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"user_id": other_user,
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"usage": ["master"],
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"keys": {
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"ed25519:" + other_master_pubkey: other_master_pubkey
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}
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}
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yield self.handler.upload_signing_keys_for_user(other_user, {
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"master_key": other_master_key
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})
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# test various signature failures (see below)
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ret = yield self.handler.upload_signatures_for_device_keys(
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local_user,
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{
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local_user: {
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# fails because the signature is invalid
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# should fail with INVALID_SIGNATURE
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device_id: {
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"user_id": local_user,
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"device_id": device_id,
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"algorithms": ["m.olm.curve25519-aes-sha256", "m.megolm.v1.aes-sha"],
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"keys": {
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"curve25519:xyz": "curve25519+key",
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# private key: OMkooTr76ega06xNvXIGPbgvvxAOzmQncN8VObS7aBA
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"ed25519:xyz": device_pubkey
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},
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"signatures": {
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local_user: {
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"ed25519:" + selfsigning_pubkey: "something",
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}
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}
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},
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# fails because device is unknown
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# should fail with NOT_FOUND
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"unknown": {
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"user_id": local_user,
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"device_id": "unknown",
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"signatures": {
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local_user: {
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"ed25519:" + selfsigning_pubkey: "something",
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}
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}
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},
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# fails because the signature is invalid
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# should fail with INVALID_SIGNATURE
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master_pubkey: {
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"user_id": local_user,
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"usage": ["master"],
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"keys": {
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"ed25519:" + master_pubkey: master_pubkey
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},
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"signatures": {
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local_user: {
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"ed25519:" + device_pubkey: "something",
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}
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}
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}
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},
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other_user: {
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# fails because the device is not the user's master-signing key
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# should fail with NOT_FOUND
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"unknown": {
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"user_id": other_user,
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"device_id": "unknown",
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"signatures": {
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local_user: {
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"ed25519:" + usersigning_pubkey: "something",
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}
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}
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},
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other_master_pubkey: {
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# fails because the key doesn't match what the server has
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# should fail with UNKNOWN
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"user_id": other_user,
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"usage": ["master"],
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"keys": {
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"ed25519:" + other_master_pubkey: other_master_pubkey
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},
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"something": "random",
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"signatures": {
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local_user: {
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"ed25519:" + usersigning_pubkey: "something",
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}
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}
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}
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}
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}
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)
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user_failures = ret["failures"][local_user]
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self.assertEqual(user_failures[device_id]["errcode"], errors.Codes.INVALID_SIGNATURE)
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self.assertEqual(user_failures[master_pubkey]["errcode"], errors.Codes.INVALID_SIGNATURE)
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self.assertEqual(user_failures["unknown"]["errcode"], errors.Codes.NOT_FOUND)
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other_user_failures = ret["failures"][other_user]
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self.assertEqual(other_user_failures["unknown"]["errcode"], errors.Codes.NOT_FOUND)
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self.assertEqual(other_user_failures[other_master_pubkey]["errcode"], errors.Codes.UNKNOWN)
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# test successful signatures
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del device_key["signatures"]
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sign.sign_json(device_key, local_user, selfsigning_signing_key)
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sign.sign_json(master_key, local_user, device_signing_key)
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sign.sign_json(other_master_key, local_user, usersigning_signing_key)
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ret = yield self.handler.upload_signatures_for_device_keys(
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local_user,
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{
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local_user: {
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device_id: device_key,
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master_pubkey: master_key
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},
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other_user: {
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other_master_pubkey: other_master_key
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}
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}
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)
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self.assertEqual(ret["failures"], {})
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# fetch the signed keys/devices and make sure that the signatures are there
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ret = yield self.handler.query_devices(
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{"device_keys": {local_user: [], other_user: []}},
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0, local_user
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)
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self.assertEqual(
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ret["device_keys"][local_user]["xyz"]["signatures"][local_user]["ed25519:" + selfsigning_pubkey],
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device_key["signatures"][local_user]["ed25519:" + selfsigning_pubkey]
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)
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self.assertEqual(
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ret["master_keys"][local_user]["signatures"][local_user]["ed25519:" + device_id],
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master_key["signatures"][local_user]["ed25519:" + device_id]
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)
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self.assertEqual(
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ret["master_keys"][other_user]["signatures"][local_user]["ed25519:" + usersigning_pubkey],
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other_master_key["signatures"][local_user]["ed25519:" + usersigning_pubkey]
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)
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