FM / Cipher

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

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

Name	Size	Mode	Actions
__pycache__/	-	0755	rm
AES.py	9569	0644	edit dl rm
AES.pyi	1387	0644	edit dl rm
ARC2.py	7026	0644	edit dl rm
ARC2.pyi	982	0644	edit dl rm
ARC4.py	5168	0644	edit dl rm
ARC4.pyi	431	0644	edit dl rm
Blowfish.py	5976	0644	edit dl rm
Blowfish.pyi	1018	0644	edit dl rm
CAST.py	6087	0644	edit dl rm
CAST.pyi	983	0644	edit dl rm
ChaCha20.py	10754	0644	edit dl rm
ChaCha20.pyi	762	0644	edit dl rm
ChaCha20_Poly1305.py	11561	0644	edit dl rm
ChaCha20_Poly1305.pyi	1068	0644	edit dl rm
DES.py	5963	0644	edit dl rm
DES.pyi	963	0644	edit dl rm
DES3.py	6941	0644	edit dl rm
DES3.pyi	1033	0644	edit dl rm
PKCS1_OAEP.py	8880	0644	edit dl rm
PKCS1_OAEP.pyi	1183	0644	edit dl rm
PKCS1_v1_5.py	7979	0644	edit dl rm
PKCS1_v1_5.pyi	571	0644	edit dl rm
Salsa20.py	6369	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	5217	0644	edit dl rm
_EKSBlowfish.pyi	270	0644	edit dl rm
_mode_cbc.py	10971	0644	edit dl rm
_mode_cbc.pyi	691	0644	edit dl rm
_mode_ccm.py	24476	0644	edit dl rm
_mode_ccm.pyi	1600	0644	edit dl rm
_mode_cfb.py	10821	0644	edit dl rm
_mode_cfb.pyi	731	0644	edit dl rm
_mode_ctr.py	15920	0644	edit dl rm
_mode_ctr.pyi	804	0644	edit dl rm
_mode_eax.py	14543	0644	edit dl rm
_mode_eax.pyi	1545	0644	edit dl rm
_mode_ecb.py	8222	0644	edit dl rm
_mode_ecb.pyi	596	0644	edit dl rm
_mode_gcm.py	21402	0644	edit dl rm
_mode_gcm.pyi	1541	0644	edit dl rm
_mode_ocb.py	19838	0644	edit dl rm
_mode_ocb.pyi	1231	0644	edit dl rm
_mode_ofb.py	10301	0644	edit dl rm
_mode_ofb.pyi	695	0644	edit dl rm
_mode_openpgp.py	7061	0644	edit dl rm
_mode_openpgp.pyi	556	0644	edit dl rm
_mode_siv.py	14094	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
_raw_blowfish.cpython-39-x86_64-linux-gnu.so	13568	0755	edit dl rm
_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	2888	0644	edit dl rm
__init__.pyi	0	0644	edit dl rm

Edit: /opt/imh-python/lib/python3.9/site-packages/Cryptodome/Cipher/AES.py (9569B)

# -*- 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.
# ===================================================================
"""
Module's constants for the modes of operation supported with AES:

: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_CCM: :ref:`Counter with CBC-MAC (CCM) Mode <ccm_mode>`
:var MODE_EAX: :ref:`EAX Mode <eax_mode>`
:var MODE_GCM: :ref:`Galois Counter Mode (GCM) <gcm_mode>`
:var MODE_SIV: :ref:`Syntethic Initialization Vector (SIV) <siv_mode>`
:var MODE_OCB: :ref:`Offset Code Book (OCB) <ocb_mode>`
"""

import sys

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

from Cryptodome.Util import _cpu_features
from Cryptodome.Random import get_random_bytes

_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("Cryptodome.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("Cryptodome.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.

:param key:
        The secret key to use in the symmetric cipher.

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

For ``MODE_SIV`` only, it doubles to 32, 48, or 64 bytes.
    :type key: bytes/bytearray/memoryview

:param mode:
        The chaining mode to use for encryption or decryption.
        If in doubt, use ``MODE_EAX``.
    :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 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*) --
            Instance of ``Cryptodome.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).

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

kwargs["add_aes_modes"] = True
    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_CCM = 8
MODE_EAX = 9
MODE_SIV = 10
MODE_GCM = 11
MODE_OCB = 12

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

cmd: