[Misc] Add backup hash algorithm for FIPS constrained environments (#28795)

Signed-off-by: George D. Torres <gdavtor@gmail.com>
Signed-off-by: George D. Torres <41129492+geodavic@users.noreply.github.com>
Signed-off-by: Russell Bryant <rbryant@redhat.com>
Co-authored-by: Russell Bryant <rbryant@redhat.com>

vllm/compilation/caching.py

@@ -1,7 +1,6 @@
 # SPDX-License-Identifier: Apache-2.0
 # SPDX-FileCopyrightText: Copyright contributors to the vLLM project
 
-import hashlib
 import inspect
 import os
 import pickle
@@ -14,6 +13,7 @@ import vllm.envs as envs
 from vllm.config import VllmConfig, get_current_vllm_config
 from vllm.config.utils import hash_factors
 from vllm.logger import init_logger
+from vllm.utils.hashing import safe_hash
 
 try:
     from torch._dynamo.aot_compile import SerializableCallable
@@ -160,7 +160,7 @@ def _compute_code_hash_with_content(file_contents: dict[str, str]) -> str:
             # e.g. exec(). We can't actually check these.
             continue
         hash_content.append(content)
-    return hashlib.md5(
+    return safe_hash(
         "\n".join(hash_content).encode(), usedforsecurity=False
     ).hexdigest()