updates

Backend/venv/lib/python3.12/site-packages/cyclonedx/_internal/hash.py

@@ -0,0 +1,43 @@
+# This file is part of CycloneDX Python Library
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# 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.
+#
+# SPDX-License-Identifier: Apache-2.0
+# Copyright (c) OWASP Foundation. All Rights Reserved.
+
+
+"""
+!!! ALL SYMBOLS IN HERE ARE INTERNAL.
+Everything might change without any notice.
+"""
+
+
+from hashlib import sha1
+
+
+def file_sha1sum(filename: str) -> str:
+    """
+    Generate a SHA1 hash of the provided file.
+
+    Args:
+        filename:
+            Absolute path to file to hash as `str`
+
+    Returns:
+        SHA-1 hash
+    """
+    h = sha1()  # nosec B303, B324
+    with open(filename, 'rb') as f:
+        for byte_block in iter(lambda: f.read(4096), b''):
+            h.update(byte_block)
+    return h.hexdigest()