diff options
| -rw-r--r-- | changelog.d/10706.misc | 1 | ||||
| -rw-r--r-- | synapse/rest/client/register.py | 13 |
2 files changed, 1 insertions, 13 deletions
diff --git a/changelog.d/10706.misc b/changelog.d/10706.misc new file mode 100644 index 0000000000..eed4aa58d6 --- /dev/null +++ b/changelog.d/10706.misc @@ -0,0 +1 @@ +Remove unused `compare_digest` function. diff --git a/synapse/rest/client/register.py b/synapse/rest/client/register.py index 2781a0ea96..7b5f49d635 100644 --- a/synapse/rest/client/register.py +++ b/synapse/rest/client/register.py @@ -12,7 +12,6 @@ # 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. -import hmac import logging import random from typing import List, Union @@ -60,18 +59,6 @@ from synapse.util.threepids import ( from ._base import client_patterns, interactive_auth_handler -# We ought to be using hmac.compare_digest() but on older pythons it doesn't -# exist. It's a _really minor_ security flaw to use plain string comparison -# because the timing attack is so obscured by all the other code here it's -# unlikely to make much difference -if hasattr(hmac, "compare_digest"): - compare_digest = hmac.compare_digest -else: - - def compare_digest(a, b): - return a == b - - logger = logging.getLogger(__name__) |