From 8154806fe2fccacdc3dafaa68181a07bcf8d6c4c Mon Sep 17 00:00:00 2001
From: Determinant <tederminant@gmail.com>
Date: Thu, 17 Nov 2022 18:08:59 -0800
Subject: v0.1.7

---
 frozen_deps/Cryptodome/Hash/TupleHash128.py | 138 ++++++++++++++++++++++++++++
 1 file changed, 138 insertions(+)
 create mode 100644 frozen_deps/Cryptodome/Hash/TupleHash128.py

(limited to 'frozen_deps/Cryptodome/Hash/TupleHash128.py')

diff --git a/frozen_deps/Cryptodome/Hash/TupleHash128.py b/frozen_deps/Cryptodome/Hash/TupleHash128.py
new file mode 100644
index 0000000..5c910e4
--- /dev/null
+++ b/frozen_deps/Cryptodome/Hash/TupleHash128.py
@@ -0,0 +1,138 @@
+# ===================================================================
+#
+# Copyright (c) 2021, Legrandin <helderijs@gmail.com>
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in
+#    the documentation and/or other materials provided with the
+#    distribution.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+# COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+# ===================================================================
+
+from Cryptodome.Util.py3compat import bord, is_bytes, tobytes
+
+from . import cSHAKE128
+from .cSHAKE128 import _encode_str, _right_encode
+
+
+class TupleHash(object):
+    """A Tuple hash object.
+    Do not instantiate directly.
+    Use the :func:`new` function.
+    """
+
+    def __init__(self, custom, cshake, digest_size):
+
+        self.digest_size = digest_size
+
+        self._cshake = cshake._new(b'', custom, b'TupleHash')
+        self._digest = None
+
+    def update(self, data):
+        """Authenticate the next byte string in the tuple.
+
+        Args:
+            data (bytes/bytearray/memoryview): The next byte string.
+        """
+
+        if self._digest is not None:
+            raise TypeError("You cannot call 'update' after 'digest' or 'hexdigest'")
+
+        if not is_bytes(data):
+            raise TypeError("You can only call 'update' on bytes")
+
+        self._cshake.update(_encode_str(tobytes(data)))
+
+        return self
+
+    def digest(self):
+        """Return the **binary** (non-printable) digest of the tuple of byte strings.
+
+        :return: The hash digest. Binary form.
+        :rtype: byte string
+        """
+
+        if self._digest is None:
+            self._cshake.update(_right_encode(self.digest_size * 8))
+            self._digest = self._cshake.read(self.digest_size)
+
+        return self._digest
+
+    def hexdigest(self):
+        """Return the **printable** digest of the tuple of byte strings.
+
+        :return: The hash digest. Hexadecimal encoded.
+        :rtype: string
+        """
+
+        return "".join(["%02x" % bord(x) for x in tuple(self.digest())])
+
+    def new(self, **kwargs):
+        """Return a new instance of a TupleHash object.
+        See :func:`new`.
+        """
+
+        if "digest_bytes" not in kwargs and "digest_bits" not in kwargs:
+            kwargs["digest_bytes"] = self.digest_size
+
+        return new(**kwargs)
+
+
+def new(**kwargs):
+    """Create a new TupleHash128 object.
+
+    Args:
+       digest_bytes (integer):
+        Optional. The size of the digest, in bytes.
+        Default is 64. Minimum is 8.
+       digest_bits (integer):
+        Optional and alternative to ``digest_bytes``.
+        The size of the digest, in bits (and in steps of 8).
+        Default is 512. Minimum is 64.
+       custom (bytes):
+        Optional.
+        A customization bytestring (``S`` in SP 800-185).
+
+    :Return: A :class:`TupleHash` object
+    """
+
+    digest_bytes = kwargs.pop("digest_bytes", None)
+    digest_bits = kwargs.pop("digest_bits", None)
+    if None not in (digest_bytes, digest_bits):
+        raise TypeError("Only one digest parameter must be provided")
+    if (None, None) == (digest_bytes, digest_bits):
+        digest_bytes = 64
+    if digest_bytes is not None:
+        if digest_bytes < 8:
+            raise ValueError("'digest_bytes' must be at least 8")
+    else:
+        if digest_bits < 64 or digest_bits % 8:
+            raise ValueError("'digest_bytes' must be at least 64 "
+                             "in steps of 8")
+        digest_bytes = digest_bits // 8
+
+    custom = kwargs.pop("custom", b'')
+
+    if kwargs:
+        raise TypeError("Unknown parameters: " + str(kwargs))
+
+    return TupleHash(custom, cSHAKE128, digest_bytes)
-- 
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