2 files changed, 14 insertions, 13 deletions
diff --git a/synapse/crypto/event_signing.py b/synapse/crypto/event_signing.py
index 6633b19565..64e40864af 100644
--- a/synapse/crypto/event_signing.py
+++ b/synapse/crypto/event_signing.py
@@ -15,11 +15,12 @@
 # limitations under the License.
 
 
-from synapse.events.utils import prune_event
-from syutil.jsonutil import encode_canonical_json
-from syutil.base64util import encode_base64, decode_base64
-from syutil.crypto.jsonsign import sign_json
 from synapse.api.errors import SynapseError, Codes
+from synapse.events.utils import prune_event
+
+from canonicaljson import encode_canonical_json
+from unpaddedbase64 import encode_base64, decode_base64
+from signedjson.sign import sign_json
 
 import hashlib
 import logging
diff --git a/synapse/crypto/keyring.py b/synapse/crypto/keyring.py
index aa74d4d0cb..a692cdbe55 100644
--- a/synapse/crypto/keyring.py
+++ b/synapse/crypto/keyring.py
@@ -14,20 +14,20 @@
 # limitations under the License.
 
 from synapse.crypto.keyclient import fetch_server_key
+from synapse.api.errors import SynapseError, Codes
+from synapse.util.retryutils import get_retry_limiter
+from synapse.util import unwrapFirstError
+from synapse.util.async import ObservableDeferred
+
 from twisted.internet import defer
-from syutil.crypto.jsonsign import (
+
+from signedjson.sign import (
     verify_signed_json, signature_ids, sign_json, encode_canonical_json
 )
-from syutil.crypto.signing_key import (
+from signedjson.key import (
     is_signing_algorithm_supported, decode_verify_key_bytes
 )
-from syutil.base64util import decode_base64, encode_base64
-from synapse.api.errors import SynapseError, Codes
-
-from synapse.util.retryutils import get_retry_limiter
-from synapse.util import unwrapFirstError
-
-from synapse.util.async import ObservableDeferred
+from unpaddedbase64 import decode_base64, encode_base64
 
 from OpenSSL import crypto