FM / Cipher

/opt/imunify360/venv/lib/python3.11/site-packages/Crypto/Cipher/

/opt/imunify360/venv/lib/python3.11/site-packages/Crypto/Cipher

Name	Size	Mode	Actions
__pycache__/	-	0755	rm
AES.py	8918	0644	edit dl rm
AES.pyi	3716	0644	edit dl rm
ARC2.py	7010	0644	edit dl rm
ARC2.pyi	980	0644	edit dl rm
ARC4.py	5116	0644	edit dl rm
ARC4.pyi	413	0644	edit dl rm
Blowfish.py	5964	0644	edit dl rm
Blowfish.pyi	1016	0644	edit dl rm
CAST.py	6071	0644	edit dl rm
CAST.pyi	981	0644	edit dl rm
ChaCha20.py	10736	0644	edit dl rm
ChaCha20.pyi	788	0644	edit dl rm
ChaCha20_Poly1305.py	11561	0644	edit dl rm
ChaCha20_Poly1305.pyi	1106	0644	edit dl rm
DES.py	5947	0644	edit dl rm
DES.pyi	961	0644	edit dl rm
DES3.py	6925	0644	edit dl rm
DES3.pyi	1031	0644	edit dl rm
PKCS1_OAEP.py	8827	0644	edit dl rm
PKCS1_OAEP.pyi	1179	0644	edit dl rm
PKCS1_v1_5.py	8141	0644	edit dl rm
PKCS1_v1_5.pyi	686	0644	edit dl rm
Salsa20.py	6349	0644	edit dl rm
Salsa20.pyi	751	0644	edit dl rm
_ARC4.abi3.so	15944	0755	edit dl rm
_chacha20.abi3.so	16064	0755	edit dl rm
_EKSBlowfish.py	5205	0644	edit dl rm
_EKSBlowfish.pyi	266	0644	edit dl rm
_mode_cbc.py	10888	0644	edit dl rm
_mode_cbc.pyi	687	0644	edit dl rm
_mode_ccm.py	24375	0644	edit dl rm
_mode_ccm.pyi	1600	0644	edit dl rm
_mode_cfb.py	10721	0644	edit dl rm
_mode_cfb.pyi	727	0644	edit dl rm
_mode_ctr.py	15812	0644	edit dl rm
_mode_ctr.pyi	800	0644	edit dl rm
_mode_eax.py	14453	0644	edit dl rm
_mode_eax.pyi	1545	0644	edit dl rm
_mode_ecb.py	8309	0644	edit dl rm
_mode_ecb.pyi	592	0644	edit dl rm
_mode_gcm.py	21297	0644	edit dl rm
_mode_gcm.pyi	1541	0644	edit dl rm
_mode_ocb.py	19935	0644	edit dl rm
_mode_ocb.pyi	1231	0644	edit dl rm
_mode_ofb.py	10209	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	13977	0644	edit dl rm
_mode_siv.pyi	1261	0644	edit dl rm
_pkcs1_decode.abi3.so	15960	0755	edit dl rm
_raw_aes.abi3.so	32720	0755	edit dl rm
_raw_aesni.abi3.so	20384	0755	edit dl rm
_raw_arc2.abi3.so	20168	0755	edit dl rm
_raw_blowfish.abi3.so	24248	0755	edit dl rm
_raw_cast.abi3.so	28584	0755	edit dl rm
_raw_cbc.abi3.so	15936	0755	edit dl rm
_raw_cfb.abi3.so	16232	0755	edit dl rm
_raw_ctr.abi3.so	16280	0755	edit dl rm
_raw_des.abi3.so	49248	0755	edit dl rm
_raw_des3.abi3.so	49256	0755	edit dl rm
_raw_ecb.abi3.so	15784	0755	edit dl rm
_raw_eksblowfish.abi3.so	32456	0755	edit dl rm
_raw_ocb.abi3.so	20296	0755	edit dl rm
_raw_ofb.abi3.so	15944	0755	edit dl rm
_Salsa20.abi3.so	16088	0755	edit dl rm
__init__.py	2844	0644	edit dl rm
__init__.pyi	0	0644	edit dl rm

Edit: /opt/imunify360/venv/lib/python3.11/site-packages/Crypto/Cipher/AES.py (8918B)

# -*- coding: utf-8 -*-
#
#  Cipher/AES.py : AES
#
# ===================================================================
# 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.
# ===================================================================

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)

from Crypto.Util import _cpu_features
from Crypto.Random import get_random_bytes

MODE_ECB = 1        #: Electronic Code Book (:ref:`ecb_mode`)
MODE_CBC = 2        #: Cipher-Block Chaining (:ref:`cbc_mode`)
MODE_CFB = 3        #: Cipher Feedback (:ref:`cfb_mode`)
MODE_OFB = 5        #: Output Feedback (:ref:`ofb_mode`)
MODE_CTR = 6        #: Counter mode (:ref:`ctr_mode`)
MODE_OPENPGP = 7    #: OpenPGP mode (:ref:`openpgp_mode`)
MODE_CCM = 8        #: Counter with CBC-MAC (:ref:`ccm_mode`)
MODE_EAX = 9        #: :ref:`eax_mode`
MODE_SIV = 10       #: Synthetic Initialization Vector (:ref:`siv_mode`)
MODE_GCM = 11       #: Galois Counter Mode (:ref:`gcm_mode`)
MODE_OCB = 12       #: Offset Code Book (:ref:`ocb_mode`)

_cproto = """
        int AES_start_operation(const uint8_t key[],
                                size_t key_len,
                                void **pResult);
        int AES_encrypt(const void *state,
                        const uint8_t *in,
                        uint8_t *out,
                        size_t data_len);
        int AES_decrypt(const void *state,
                        const uint8_t *in,
                        uint8_t *out,
                        size_t data_len);
        int AES_stop_operation(void *state);
        """

# Load portable AES
_raw_aes_lib = load_pycryptodome_raw_lib("Crypto.Cipher._raw_aes",
                                         _cproto)

# Try to load AES with AES NI instructions
try:
    _raw_aesni_lib = None
    if _cpu_features.have_aes_ni():
        _raw_aesni_lib = load_pycryptodome_raw_lib("Crypto.Cipher._raw_aesni",
                                                   _cproto.replace("AES",
                                                                   "AESNI"))
# _raw_aesni may not have been compiled in
except OSError:
    pass

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."""

use_aesni = dict_parameters.pop("use_aesni", True)

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

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

if use_aesni and _raw_aesni_lib:
        start_operation = _raw_aesni_lib.AESNI_start_operation
        stop_operation = _raw_aesni_lib.AESNI_stop_operation
    else:
        start_operation = _raw_aes_lib.AES_start_operation
        stop_operation = _raw_aes_lib.AES_stop_operation

cipher = VoidPointer()
    result = start_operation(c_uint8_ptr(key),
                             c_size_t(len(key)),
                             cipher.address_of())
    if result:
        raise ValueError("Error %X while instantiating the AES cipher"
                         % result)
    return SmartPointer(cipher.get(), stop_operation)

def _derive_Poly1305_key_pair(key, nonce):
    """Derive a tuple (r, s, nonce) for a Poly1305 MAC.

If nonce is ``None``, a new 16-byte nonce is generated.
    """

if len(key) != 32:
        raise ValueError("Poly1305 with AES requires a 32-byte key")

if nonce is None:
        nonce = get_random_bytes(16)
    elif len(nonce) != 16:
        raise ValueError("Poly1305 with AES requires a 16-byte nonce")

s = new(key[:16], MODE_ECB).encrypt(nonce)
    return key[16:], s, nonce

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

Args:
      key(bytes/bytearray/memoryview):
        The secret key to use in the symmetric cipher.

It must be 16 (*AES-128)*, 24 (*AES-192*) or 32 (*AES-256*) bytes long.

For ``MODE_SIV`` only, it doubles to 32, 48, or 64 bytes.
      mode (a ``MODE_*`` constant):
        The chaining mode to use for encryption or decryption.
        If in doubt, use ``MODE_EAX``.

Keyword Args:
      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 16 bytes long.

For ``MODE_OPENPGP`` mode only,
        it must be 16 bytes long for encryption
        and 18 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_CCM``, ``MODE_EAX``, ``MODE_GCM``,
        ``MODE_SIV``, ``MODE_OCB``, and ``MODE_CTR``).

A value that must never be reused for any other encryption done
        with this key (except possibly for ``MODE_SIV``, see below).

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

For ``MODE_CCM``, its length must be in the range **[7..13]**.
        Bear in mind that with CCM there is a trade-off between nonce
        length and maximum message size. Recommendation: **11** bytes.

For ``MODE_OCB``, its length must be in the range **[1..15]**
        (recommended: **15**).

For ``MODE_CTR``, its length must be in the range **[0..15]**
        (recommended: **8**).

For ``MODE_SIV``, the nonce is optional, if it is not specified,
        then no nonce is being used, which renders the encryption
        deterministic.

If not provided, for modes other than ``MODE_SIV``, a random
        byte string of the recommended length is used (you must then
        read its value with the :attr:`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``, ``MODE_GCM``, ``MODE_OCB``, ``MODE_CCM``)
        Length of the authentication tag, in bytes.

It must be even and in the range **[4..16]**.
        The recommended value (and the default, if not specified) is **16**.

msg_len (integer):
        (Only ``MODE_CCM``). Length of the message to (de)cipher.
        If not specified, ``encrypt`` must be called with the entire message.
        Similarly, ``decrypt`` can only be called once.

assoc_len (integer):
        (Only ``MODE_CCM``). Length of the associated data.
        If not specified, all associated data is buffered internally,
        which may represent a problem for very large messages.

initial_value (integer or bytes/bytearray/memoryview):
        (Only ``MODE_CTR``).
        The initial value for the counter. If not present, the cipher will
        start counting from 0. The value is incremented by one for each block.
        The counter number is encoded in big endian mode.

counter (object):
        (Only ``MODE_CTR``).
        Instance of ``Crypto.Util.Counter``, which allows full customization
        of the counter block. This parameter is incompatible to both ``nonce``
        and ``initial_value``.

use_aesni: (boolean):
        Use Intel AES-NI hardware extensions (default: use if available).

Returns:
        an AES object, of the applicable mode.
    """

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

# Size of a data block (in bytes)
block_size = 16
# Size of a key (in bytes)
key_size = (16, 24, 32)

cmd: