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feat(security): Add a communication auth_key for NCCL and HCCL. - #320
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…o NCCL engine - Create zmq_auth.py with generate_auth_key, send_auth_pyobj, recv_auth_pyobj - Refactor HCCLCheckpointEngine to use the shared helpers - Add HMAC authentication to NCCLCheckpointEngine's PUB/SUB channel - Broadcast auth_key via MasterMetadata so workers share the secret - Export new auth utilities from checkpoint_engine package
tastelikefeet
approved these changes
Oct 16, 2026
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