moving to scripts

asq-env/lib/python3.9/site-packages/cryptography/hazmat/primitives/asymmetric/ed25519.py

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+# This file is dual licensed under the terms of the Apache License, Version
+# 2.0, and the BSD License. See the LICENSE file in the root of this repository
+# for complete details.
+
+
+import abc
+
+from cryptography.exceptions import UnsupportedAlgorithm, _Reasons
+from cryptography.hazmat.primitives import _serialization
+
+
+_ED25519_KEY_SIZE = 32
+_ED25519_SIG_SIZE = 64
+
+
+class Ed25519PublicKey(metaclass=abc.ABCMeta):
+    @classmethod
+    def from_public_bytes(cls, data: bytes) -> "Ed25519PublicKey":
+        from cryptography.hazmat.backends.openssl.backend import backend
+
+        if not backend.ed25519_supported():
+            raise UnsupportedAlgorithm(
+                "ed25519 is not supported by this version of OpenSSL.",
+                _Reasons.UNSUPPORTED_PUBLIC_KEY_ALGORITHM,
+            )
+
+        return backend.ed25519_load_public_bytes(data)
+
+    @abc.abstractmethod
+    def public_bytes(
+        self,
+        encoding: _serialization.Encoding,
+        format: _serialization.PublicFormat,
+    ) -> bytes:
+        """
+        The serialized bytes of the public key.
+        """
+
+    @abc.abstractmethod
+    def verify(self, signature: bytes, data: bytes) -> None:
+        """
+        Verify the signature.
+        """
+
+
+class Ed25519PrivateKey(metaclass=abc.ABCMeta):
+    @classmethod
+    def generate(cls) -> "Ed25519PrivateKey":
+        from cryptography.hazmat.backends.openssl.backend import backend
+
+        if not backend.ed25519_supported():
+            raise UnsupportedAlgorithm(
+                "ed25519 is not supported by this version of OpenSSL.",
+                _Reasons.UNSUPPORTED_PUBLIC_KEY_ALGORITHM,
+            )
+
+        return backend.ed25519_generate_key()
+
+    @classmethod
+    def from_private_bytes(cls, data: bytes) -> "Ed25519PrivateKey":
+        from cryptography.hazmat.backends.openssl.backend import backend
+
+        if not backend.ed25519_supported():
+            raise UnsupportedAlgorithm(
+                "ed25519 is not supported by this version of OpenSSL.",
+                _Reasons.UNSUPPORTED_PUBLIC_KEY_ALGORITHM,
+            )
+
+        return backend.ed25519_load_private_bytes(data)
+
+    @abc.abstractmethod
+    def public_key(self) -> Ed25519PublicKey:
+        """
+        The Ed25519PublicKey derived from the private key.
+        """
+
+    @abc.abstractmethod
+    def private_bytes(
+        self,
+        encoding: _serialization.Encoding,
+        format: _serialization.PrivateFormat,
+        encryption_algorithm: _serialization.KeySerializationEncryption,
+    ) -> bytes:
+        """
+        The serialized bytes of the private key.
+        """
+
+    @abc.abstractmethod
+    def sign(self, data: bytes) -> bytes:
+        """
+        Signs the data.
+        """