FM / Cipher

/opt/imh-python/lib/python3.9/site-packages/Crypto/Cipher/

/opt/imh-python/lib/python3.9/site-packages/Crypto/Cipher

Name	Size	Mode	Actions
__pycache__/	-	0755	rm
AES.py	9541	0644	edit dl rm
AES.pyi	1343	0644	edit dl rm
ARC2.py	7010	0644	edit dl rm
ARC2.pyi	954	0644	edit dl rm
ARC4.py	5152	0644	edit dl rm
ARC4.pyi	431	0644	edit dl rm
Blowfish.py	5964	0644	edit dl rm
Blowfish.pyi	990	0644	edit dl rm
CAST.py	6071	0644	edit dl rm
CAST.pyi	955	0644	edit dl rm
ChaCha20.py	10734	0644	edit dl rm
ChaCha20.pyi	762	0644	edit dl rm
ChaCha20_Poly1305.py	11529	0644	edit dl rm
ChaCha20_Poly1305.pyi	1068	0644	edit dl rm
DES.py	5947	0644	edit dl rm
DES.pyi	935	0644	edit dl rm
DES3.py	6925	0644	edit dl rm
DES3.pyi	1005	0644	edit dl rm
PKCS1_OAEP.py	8824	0644	edit dl rm
PKCS1_OAEP.pyi	1179	0644	edit dl rm
PKCS1_v1_5.py	7943	0644	edit dl rm
PKCS1_v1_5.pyi	567	0644	edit dl rm
Salsa20.py	6349	0644	edit dl rm
Salsa20.pyi	744	0644	edit dl rm
_ARC4.cpython-39-x86_64-linux-gnu.so	8072	0755	edit dl rm
_chacha20.cpython-39-x86_64-linux-gnu.so	11024	0755	edit dl rm
_EKSBlowfish.py	5205	0644	edit dl rm
_EKSBlowfish.pyi	266	0644	edit dl rm
_mode_cbc.py	10951	0644	edit dl rm
_mode_cbc.pyi	687	0644	edit dl rm
_mode_ccm.py	24444	0644	edit dl rm
_mode_ccm.pyi	1600	0644	edit dl rm
_mode_cfb.py	10801	0644	edit dl rm
_mode_cfb.pyi	727	0644	edit dl rm
_mode_ctr.py	15880	0644	edit dl rm
_mode_ctr.pyi	800	0644	edit dl rm
_mode_eax.py	14511	0644	edit dl rm
_mode_eax.pyi	1545	0644	edit dl rm
_mode_ecb.py	8210	0644	edit dl rm
_mode_ecb.pyi	592	0644	edit dl rm
_mode_gcm.py	21358	0644	edit dl rm
_mode_gcm.pyi	1541	0644	edit dl rm
_mode_ocb.py	19794	0644	edit dl rm
_mode_ocb.pyi	1231	0644	edit dl rm
_mode_ofb.py	10281	0644	edit dl rm
_mode_ofb.pyi	691	0644	edit dl rm
_mode_openpgp.py	7053	0644	edit dl rm
_mode_openpgp.pyi	556	0644	edit dl rm
_mode_siv.py	14062	0644	edit dl rm
_mode_siv.pyi	1261	0644	edit dl rm
_raw_aes.cpython-39-x86_64-linux-gnu.so	26816	0755	edit dl rm
_raw_aesni.cpython-39-x86_64-linux-gnu.so	11648	0755	edit dl rm
_raw_arc2.cpython-39-x86_64-linux-gnu.so	10528	0755	edit dl rm
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_raw_cast.cpython-39-x86_64-linux-gnu.so	19864	0755	edit dl rm
_raw_cbc.cpython-39-x86_64-linux-gnu.so	8672	0755	edit dl rm
_raw_cfb.cpython-39-x86_64-linux-gnu.so	8928	0755	edit dl rm
_raw_ctr.cpython-39-x86_64-linux-gnu.so	9200	0755	edit dl rm
_raw_des.cpython-39-x86_64-linux-gnu.so	45120	0755	edit dl rm
_raw_des3.cpython-39-x86_64-linux-gnu.so	45408	0755	edit dl rm
_raw_ecb.cpython-39-x86_64-linux-gnu.so	6528	0755	edit dl rm
_raw_eksblowfish.cpython-39-x86_64-linux-gnu.so	18888	0755	edit dl rm
_raw_ocb.cpython-39-x86_64-linux-gnu.so	11456	0755	edit dl rm
_raw_ofb.cpython-39-x86_64-linux-gnu.so	7496	0755	edit dl rm
_Salsa20.cpython-39-x86_64-linux-gnu.so	8824	0755	edit dl rm
__init__.py	2844	0644	edit dl rm
__init__.pyi	0	0644	edit dl rm

Edit: /opt/imh-python/lib/python3.9/site-packages/Crypto/Cipher/DES3.py (6925B)

# -*- coding: utf-8 -*-
#
#  Cipher/DES3.py : DES3
#
# ===================================================================
# The contents of this file are dedicated to the public domain.  To
# the extent that dedication to the public domain is not available,
# everyone is granted a worldwide, perpetual, royalty-free,
# non-exclusive license to exercise all rights associated with the
# contents of this file for any purpose whatsoever.
# No rights are reserved.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
# BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
# ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
# CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
# ===================================================================
"""
Module's constants for the modes of operation supported with Triple DES:

:var MODE_ECB: :ref:`Electronic Code Book (ECB) <ecb_mode>`
:var MODE_CBC: :ref:`Cipher-Block Chaining (CBC) <cbc_mode>`
:var MODE_CFB: :ref:`Cipher FeedBack (CFB) <cfb_mode>`
:var MODE_OFB: :ref:`Output FeedBack (OFB) <ofb_mode>`
:var MODE_CTR: :ref:`CounTer Mode (CTR) <ctr_mode>`
:var MODE_OPENPGP:  :ref:`OpenPGP Mode <openpgp_mode>`
:var MODE_EAX: :ref:`EAX Mode <eax_mode>`
"""

import sys

from Crypto.Cipher import _create_cipher
from Crypto.Util.py3compat import byte_string, bchr, bord, bstr
from Crypto.Util._raw_api import (load_pycryptodome_raw_lib,
                                  VoidPointer, SmartPointer,
                                  c_size_t)

_raw_des3_lib = load_pycryptodome_raw_lib(
                    "Crypto.Cipher._raw_des3",
                    """
                    int DES3_start_operation(const uint8_t key[],
                                             size_t key_len,
                                             void **pResult);
                    int DES3_encrypt(const void *state,
                                     const uint8_t *in,
                                     uint8_t *out,
                                     size_t data_len);
                    int DES3_decrypt(const void *state,
                                     const uint8_t *in,
                                     uint8_t *out,
                                     size_t data_len);
                    int DES3_stop_operation(void *state);
                    """)

def adjust_key_parity(key_in):
    """Set the parity bits in a TDES key.

:param key_in: the TDES key whose bits need to be adjusted
    :type key_in: byte string

:returns: a copy of ``key_in``, with the parity bits correctly set
    :rtype: byte string

:raises ValueError: if the TDES key is not 16 or 24 bytes long
    :raises ValueError: if the TDES key degenerates into Single DES
    """

def parity_byte(key_byte):
        parity = 1
        for i in range(1, 8):
            parity ^= (key_byte >> i) & 1
        return (key_byte & 0xFE) | parity

if len(key_in) not in key_size:
        raise ValueError("Not a valid TDES key")

key_out = b"".join([ bchr(parity_byte(bord(x))) for x in key_in ])

if key_out[:8] == key_out[8:16] or key_out[-16:-8] == key_out[-8:]:
        raise ValueError("Triple DES key degenerates to single DES")

return key_out

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

try:
        key_in = dict_parameters.pop("key")
    except KeyError:
        raise TypeError("Missing 'key' parameter")

key = adjust_key_parity(bstr(key_in))

start_operation = _raw_des3_lib.DES3_start_operation
    stop_operation = _raw_des3_lib.DES3_stop_operation

cipher = VoidPointer()
    result = start_operation(key,
                             c_size_t(len(key)),
                             cipher.address_of())
    if result:
        raise ValueError("Error %X while instantiating the TDES cipher"
                         % result)
    return SmartPointer(cipher.get(), stop_operation)

def new(key, mode, *args, **kwargs):
    """Create a new Triple DES cipher.

:param key:
        The secret key to use in the symmetric cipher.
        It must be 16 or 24 byte long. The parity bits will be ignored.
    :type key: bytes/bytearray/memoryview

:param mode:
        The chaining mode to use for encryption or decryption.
    :type mode: One of the supported ``MODE_*`` constants

:Keyword Arguments:
        *   **iv** (*bytes*, *bytearray*, *memoryview*) --
            (Only applicable for ``MODE_CBC``, ``MODE_CFB``, ``MODE_OFB``,
            and ``MODE_OPENPGP`` modes).

The initialization vector to use for encryption or decryption.

For ``MODE_CBC``, ``MODE_CFB``, and ``MODE_OFB`` it must be 8 bytes long.

For ``MODE_OPENPGP`` mode only,
            it must be 8 bytes long for encryption
            and 10 bytes for decryption (in the latter case, it is
            actually the *encrypted* IV which was prefixed to the ciphertext).

If not provided, a random byte string is generated (you must then
            read its value with the :attr:`iv` attribute).

*   **nonce** (*bytes*, *bytearray*, *memoryview*) --
            (Only applicable for ``MODE_EAX`` and ``MODE_CTR``).

A value that must never be reused for any other encryption done
            with this key.

For ``MODE_EAX`` there are no
            restrictions on its length (recommended: **16** bytes).

For ``MODE_CTR``, its length must be in the range **[0..7]**.

If not provided for ``MODE_EAX``, a random byte string is generated (you
            can read it back via the ``nonce`` attribute).

*   **segment_size** (*integer*) --
            (Only ``MODE_CFB``).The number of **bits** the plaintext and ciphertext
            are segmented in. It must be a multiple of 8.
            If not specified, it will be assumed to be 8.

*   **mac_len** : (*integer*) --
            (Only ``MODE_EAX``)
            Length of the authentication tag, in bytes.
            It must be no longer than 8 (default).

*   **initial_value** : (*integer*) --
            (Only ``MODE_CTR``). The initial value for the counter within
            the counter block. By default it is **0**.

:Return: a Triple DES object, of the applicable mode.
    """

return _create_cipher(sys.modules[__name__], key, mode, *args, **kwargs)

MODE_ECB = 1
MODE_CBC = 2
MODE_CFB = 3
MODE_OFB = 5
MODE_CTR = 6
MODE_OPENPGP = 7
MODE_EAX = 9

# Size of a data block (in bytes)
block_size = 8
# Size of a key (in bytes)
key_size = (16, 24)

cmd: