Dre4m Shell
Server IP : 85.214.239.14  /  Your IP : 3.16.212.203
Web Server : Apache/2.4.62 (Debian)
System : Linux h2886529.stratoserver.net 4.9.0 #1 SMP Tue Jan 9 19:45:01 MSK 2024 x86_64
User : www-data ( 33)
PHP Version : 7.4.18
Disable Function : pcntl_alarm,pcntl_fork,pcntl_waitpid,pcntl_wait,pcntl_wifexited,pcntl_wifstopped,pcntl_wifsignaled,pcntl_wifcontinued,pcntl_wexitstatus,pcntl_wtermsig,pcntl_wstopsig,pcntl_signal,pcntl_signal_get_handler,pcntl_signal_dispatch,pcntl_get_last_error,pcntl_strerror,pcntl_sigprocmask,pcntl_sigwaitinfo,pcntl_sigtimedwait,pcntl_exec,pcntl_getpriority,pcntl_setpriority,pcntl_async_signals,pcntl_unshare,
MySQL : OFF  |  cURL : OFF  |  WGET : ON  |  Perl : ON  |  Python : ON  |  Sudo : ON  |  Pkexec : OFF
Directory :  /proc/self/root/lib/python3/dist-packages/cryptography/hazmat/primitives/kdf/

Upload File :
current_dir [ Writeable ] document_root [ Writeable ]

 

Command :


[ HOME SHELL ]     

Current File : /proc/self/root/lib/python3/dist-packages/cryptography/hazmat/primitives/kdf/pbkdf2.py
# 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 typing

from cryptography import utils
from cryptography.exceptions import (
    AlreadyFinalized,
    InvalidKey,
    UnsupportedAlgorithm,
    _Reasons,
)
from cryptography.hazmat.primitives import constant_time, hashes
from cryptography.hazmat.primitives.kdf import KeyDerivationFunction


class PBKDF2HMAC(KeyDerivationFunction):
    def __init__(
        self,
        algorithm: hashes.HashAlgorithm,
        length: int,
        salt: bytes,
        iterations: int,
        backend: typing.Any = None,
    ):
        from cryptography.hazmat.backends.openssl.backend import (
            backend as ossl,
        )

        if not ossl.pbkdf2_hmac_supported(algorithm):
            raise UnsupportedAlgorithm(
                "{} is not supported for PBKDF2 by this backend.".format(
                    algorithm.name
                ),
                _Reasons.UNSUPPORTED_HASH,
            )
        self._used = False
        self._algorithm = algorithm
        self._length = length
        utils._check_bytes("salt", salt)
        self._salt = salt
        self._iterations = iterations

    def derive(self, key_material: bytes) -> bytes:
        if self._used:
            raise AlreadyFinalized("PBKDF2 instances can only be used once.")
        self._used = True

        utils._check_byteslike("key_material", key_material)
        from cryptography.hazmat.backends.openssl.backend import backend

        return backend.derive_pbkdf2_hmac(
            self._algorithm,
            self._length,
            self._salt,
            self._iterations,
            key_material,
        )

    def verify(self, key_material: bytes, expected_key: bytes) -> None:
        derived_key = self.derive(key_material)
        if not constant_time.bytes_eq(derived_key, expected_key):
            raise InvalidKey("Keys do not match.")

Anon7 - 2022
AnonSec Team