added v3

venv/lib/python3.11/site-packages/nacl/bindings/crypto_hash.py

@@ -0,0 +1,63 @@
+# Copyright 2013 Donald Stufft and individual contributors
+#
+# 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.
+
+
+from nacl import exceptions as exc
+from nacl._sodium import ffi, lib
+from nacl.exceptions import ensure
+
+
+# crypto_hash_BYTES = lib.crypto_hash_bytes()
+crypto_hash_BYTES: int = lib.crypto_hash_sha512_bytes()
+crypto_hash_sha256_BYTES: int = lib.crypto_hash_sha256_bytes()
+crypto_hash_sha512_BYTES: int = lib.crypto_hash_sha512_bytes()
+
+
+def crypto_hash(message: bytes) -> bytes:
+    """
+    Hashes and returns the message ``message``.
+
+    :param message: bytes
+    :rtype: bytes
+    """
+    digest = ffi.new("unsigned char[]", crypto_hash_BYTES)
+    rc = lib.crypto_hash(digest, message, len(message))
+    ensure(rc == 0, "Unexpected library error", raising=exc.RuntimeError)
+    return ffi.buffer(digest, crypto_hash_BYTES)[:]
+
+
+def crypto_hash_sha256(message: bytes) -> bytes:
+    """
+    Hashes and returns the message ``message``.
+
+    :param message: bytes
+    :rtype: bytes
+    """
+    digest = ffi.new("unsigned char[]", crypto_hash_sha256_BYTES)
+    rc = lib.crypto_hash_sha256(digest, message, len(message))
+    ensure(rc == 0, "Unexpected library error", raising=exc.RuntimeError)
+    return ffi.buffer(digest, crypto_hash_sha256_BYTES)[:]
+
+
+def crypto_hash_sha512(message: bytes) -> bytes:
+    """
+    Hashes and returns the message ``message``.
+
+    :param message: bytes
+    :rtype: bytes
+    """
+    digest = ffi.new("unsigned char[]", crypto_hash_sha512_BYTES)
+    rc = lib.crypto_hash_sha512(digest, message, len(message))
+    ensure(rc == 0, "Unexpected library error", raising=exc.RuntimeError)
+    return ffi.buffer(digest, crypto_hash_sha512_BYTES)[:]