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fix: Replace plain SHA-256 with HMAC-SHA256 for remote function artifact integrity #5602

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fix: Replace plain SHA-256 with HMAC-SHA256 for remote function artifact integrity #5602

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d469f05
Draft fix with unit tests
mollyheamazon Mar 5, 2026
72a3982
Update after testing
mollyheamazon Mar 7, 2026
08c6146
Merge branch 'master' into hmac-key-new
mollyheamazon Mar 7, 2026
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6 changes: 0 additions & 6 deletions sagemaker-core/src/sagemaker/core/remote_function/client.py
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Original file line number Diff line number Diff line change
Expand Up @@ -369,7 +369,6 @@ def wrapper(*args, **kwargs):
s3_uri=s3_path_join(
job_settings.s3_root_uri, job.job_name, EXCEPTION_FOLDER
),

)
except ServiceError as serr:
chained_e = serr.__cause__
Expand Down Expand Up @@ -406,7 +405,6 @@ def wrapper(*args, **kwargs):
return serialization.deserialize_obj_from_s3(
sagemaker_session=job_settings.sagemaker_session,
s3_uri=s3_path_join(job_settings.s3_root_uri, job.job_name, RESULTS_FOLDER),

)

if job.describe()["TrainingJobStatus"] == "Stopped":
Expand Down Expand Up @@ -1008,7 +1006,6 @@ def from_describe_response(describe_training_job_response, sagemaker_session):
job_return = serialization.deserialize_obj_from_s3(
sagemaker_session=sagemaker_session,
s3_uri=s3_path_join(job.s3_uri, RESULTS_FOLDER),

)
except DeserializationError as e:
client_exception = e
Expand All @@ -1020,7 +1017,6 @@ def from_describe_response(describe_training_job_response, sagemaker_session):
job_exception = serialization.deserialize_exception_from_s3(
sagemaker_session=sagemaker_session,
s3_uri=s3_path_join(job.s3_uri, EXCEPTION_FOLDER),

)
except ServiceError as serr:
chained_e = serr.__cause__
Expand Down Expand Up @@ -1110,7 +1106,6 @@ def result(self, timeout: float = None) -> Any:
self._return = serialization.deserialize_obj_from_s3(
sagemaker_session=self._job.sagemaker_session,
s3_uri=s3_path_join(self._job.s3_uri, RESULTS_FOLDER),

)
self._state = _FINISHED
return self._return
Expand All @@ -1119,7 +1114,6 @@ def result(self, timeout: float = None) -> Any:
self._exception = serialization.deserialize_exception_from_s3(
sagemaker_session=self._job.sagemaker_session,
s3_uri=s3_path_join(self._job.s3_uri, EXCEPTION_FOLDER),

)
except ServiceError as serr:
chained_e = serr.__cause__
Expand Down
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