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?? AES.py(8.71 KB)
?? AES.pyi(3.63 KB)
?? ARC2.py(6.85 KB)
?? ARC2.pyi(980 B)
?? ARC4.py(5 KB)
?? ARC4.pyi(413 B)
?? Blowfish.py(5.82 KB)
?? Blowfish.pyi(1016 B)
?? CAST.py(5.93 KB)
?? CAST.pyi(981 B)
?? ChaCha20.py(10.48 KB)
?? ChaCha20.pyi(788 B)
?? ChaCha20_Poly1305.py(11.29 KB)
?? ChaCha20_Poly1305.pyi(1.08 KB)
?? DES.py(5.81 KB)
?? DES.pyi(961 B)
?? DES3.py(6.76 KB)
?? DES3.pyi(1.01 KB)
?? PKCS1_OAEP.py(8.62 KB)
?? PKCS1_OAEP.pyi(1.15 KB)
?? PKCS1_v1_5.py(7.95 KB)
?? PKCS1_v1_5.pyi(686 B)
?? Salsa20.py(6.2 KB)
?? Salsa20.pyi(751 B)
?? _ARC4.abi3.so(15.57 KB)
?? _EKSBlowfish.py(5.08 KB)
?? _EKSBlowfish.pyi(266 B)
?? _Salsa20.abi3.so(15.71 KB)
?? __init__.py(2.78 KB)
?? __init__.pyi(0 B)
?? __pycache__
?? _chacha20.abi3.so(15.69 KB)
?? _mode_cbc.py(10.63 KB)
?? _mode_cbc.pyi(687 B)
?? _mode_ccm.py(23.8 KB)
?? _mode_ccm.pyi(1.56 KB)
?? _mode_cfb.py(10.47 KB)
?? _mode_cfb.pyi(727 B)
?? _mode_ctr.py(15.44 KB)
?? _mode_ctr.pyi(800 B)
?? _mode_eax.py(14.11 KB)
?? _mode_eax.pyi(1.51 KB)
?? _mode_ecb.py(8.11 KB)
?? _mode_ecb.pyi(592 B)
?? _mode_gcm.py(20.8 KB)
?? _mode_gcm.pyi(1.5 KB)
?? _mode_ocb.py(19.47 KB)
?? _mode_ocb.pyi(1.2 KB)
?? _mode_ofb.py(9.97 KB)
?? _mode_ofb.pyi(691 B)
?? _mode_openpgp.py(6.89 KB)
?? _mode_openpgp.pyi(556 B)
?? _mode_siv.py(13.65 KB)
?? _mode_siv.pyi(1.23 KB)
?? _pkcs1_decode.abi3.so(15.59 KB)
?? _raw_aes.abi3.so(31.95 KB)
?? _raw_aesni.abi3.so(19.91 KB)
?? _raw_arc2.abi3.so(19.7 KB)
?? _raw_blowfish.abi3.so(23.68 KB)
?? _raw_cast.abi3.so(27.91 KB)
?? _raw_cbc.abi3.so(15.56 KB)
?? _raw_cfb.abi3.so(15.85 KB)
?? _raw_ctr.abi3.so(15.9 KB)
?? _raw_des.abi3.so(48.09 KB)
?? _raw_des3.abi3.so(48.1 KB)
?? _raw_ecb.abi3.so(15.41 KB)
?? _raw_eksblowfish.abi3.so(31.7 KB)
?? _raw_ocb.abi3.so(19.82 KB)
?? _raw_ofb.abi3.so(15.57 KB)

Editing: _EKSBlowfish.py

# ===================================================================
#
# Copyright (c) 2019, 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.
# ===================================================================

import sys

from Crypto.Cipher import _create_cipher
from Crypto.Util._raw_api import (load_pycryptodome_raw_lib,
                                  VoidPointer, SmartPointer, c_size_t,
                                  c_uint8_ptr, c_uint)

_raw_blowfish_lib = load_pycryptodome_raw_lib(
        "Crypto.Cipher._raw_eksblowfish",
        """
        int EKSBlowfish_start_operation(const uint8_t key[],
                                        size_t key_len,
                                        const uint8_t salt[16],
                                        size_t salt_len,
                                        unsigned cost,
                                        unsigned invert,
                                        void **pResult);
        int EKSBlowfish_encrypt(const void *state,
                                const uint8_t *in,
                                uint8_t *out,
                                size_t data_len);
        int EKSBlowfish_decrypt(const void *state,
                                const uint8_t *in,
                                uint8_t *out,
                                size_t data_len);
        int EKSBlowfish_stop_operation(void *state);
        """
        )

def _create_base_cipher(dict_parameters):
    """This method instantiates and returns a smart pointer to
    a low-level base cipher. It will absorb named parameters in
    the process."""

try:
        key = dict_parameters.pop("key")
        salt = dict_parameters.pop("salt")
        cost = dict_parameters.pop("cost")
    except KeyError as e:
        raise TypeError("Missing EKSBlowfish parameter: " + str(e))
    invert = dict_parameters.pop("invert", True)

if len(key) not in key_size:
        raise ValueError("Incorrect EKSBlowfish key length (%d bytes)" % len(key))

start_operation = _raw_blowfish_lib.EKSBlowfish_start_operation
    stop_operation = _raw_blowfish_lib.EKSBlowfish_stop_operation

void_p = VoidPointer()
    result = start_operation(c_uint8_ptr(key),
                             c_size_t(len(key)),
                             c_uint8_ptr(salt),
                             c_size_t(len(salt)),
                             c_uint(cost),
                             c_uint(int(invert)),
                             void_p.address_of())
    if result:
        raise ValueError("Error %X while instantiating the EKSBlowfish cipher"
                         % result)
    return SmartPointer(void_p.get(), stop_operation)

def new(key, mode, salt, cost, invert):
    """Create a new EKSBlowfish cipher
    
    Args:

key (bytes, bytearray, memoryview):
        The secret key to use in the symmetric cipher.
        Its length can vary from 0 to 72 bytes.

mode (one of the supported ``MODE_*`` constants):
        The chaining mode to use for encryption or decryption.

salt (bytes, bytearray, memoryview):
        The salt that bcrypt uses to thwart rainbow table attacks

cost (integer):
        The complexity factor in bcrypt

invert (bool):
        If ``False``, in the inner loop use ``ExpandKey`` first over the salt
        and then over the key, as defined in
        the `original bcrypt specification <https://www.usenix.org/legacy/events/usenix99/provos/provos_html/node4.html>`_.
        If ``True``, reverse the order, as in the first implementation of
        `bcrypt` in OpenBSD.

:Return: an EKSBlowfish object
    """

kwargs = { 'salt':salt, 'cost':cost, 'invert':invert }
    return _create_cipher(sys.modules[__name__], key, mode, **kwargs)

MODE_ECB = 1

# Size of a data block (in bytes)
block_size = 8
# Size of a key (in bytes)
key_size = range(0, 72 + 1)

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Editing: _EKSBlowfish.py

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