Updates

ETB-API/venv/lib/python3.12/site-packages/celery/security/key.py

@@ -0,0 +1,35 @@
+"""Private keys for the security serializer."""
+from cryptography.hazmat.backends import default_backend
+from cryptography.hazmat.primitives import serialization
+from cryptography.hazmat.primitives.asymmetric import padding, rsa
+from kombu.utils.encoding import ensure_bytes
+
+from .utils import reraise_errors
+
+__all__ = ('PrivateKey',)
+
+
+class PrivateKey:
+    """Represents a private key."""
+
+    def __init__(self, key, password=None):
+        with reraise_errors(
+            'Invalid private key: {0!r}', errors=(ValueError,)
+        ):
+            self._key = serialization.load_pem_private_key(
+                ensure_bytes(key),
+                password=ensure_bytes(password),
+                backend=default_backend())
+
+            if not isinstance(self._key, rsa.RSAPrivateKey):
+                raise ValueError("Non-RSA keys are not supported.")
+
+    def sign(self, data, digest):
+        """Sign string containing data."""
+        with reraise_errors('Unable to sign data: {0!r}'):
+
+            pad = padding.PSS(
+                mgf=padding.MGF1(digest),
+                salt_length=padding.PSS.MAX_LENGTH)
+
+            return self._key.sign(ensure_bytes(data), pad, digest)