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/Salsa20.py (6369B)

# -*- coding: utf-8 -*-
#
# Cipher/Salsa20.py : Salsa20 stream cipher (http://cr.yp.to/snuffle.html)
#
# Contributed by Fabrizio Tarizzo <fabrizio@fabriziotarizzo.org>.
#
# ===================================================================
# 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.
# ===================================================================

from Cryptodome.Util.py3compat import _copy_bytes
from Cryptodome.Util._raw_api import (load_pycryptodome_raw_lib,
                                  create_string_buffer,
                                  get_raw_buffer, VoidPointer,
                                  SmartPointer, c_size_t,
                                  c_uint8_ptr, is_writeable_buffer)

from Cryptodome.Random import get_random_bytes

_raw_salsa20_lib = load_pycryptodome_raw_lib("Cryptodome.Cipher._Salsa20",
                    """
                    int Salsa20_stream_init(uint8_t *key, size_t keylen,
                                            uint8_t *nonce, size_t nonce_len,
                                            void **pSalsaState);
                    int Salsa20_stream_destroy(void *salsaState);
                    int Salsa20_stream_encrypt(void *salsaState,
                                               const uint8_t in[],
                                               uint8_t out[], size_t len);
                    """)

class Salsa20Cipher:
    """Salsa20 cipher object. Do not create it directly. Use :py:func:`new`
    instead.

:var nonce: The nonce with length 8
    :vartype nonce: byte string
    """

def __init__(self, key, nonce):
        """Initialize a Salsa20 cipher object

See also `new()` at the module level."""

if len(key) not in key_size:
            raise ValueError("Incorrect key length for Salsa20 (%d bytes)" % len(key))

if len(nonce) != 8:
            raise ValueError("Incorrect nonce length for Salsa20 (%d bytes)" %
                             len(nonce))

self.nonce = _copy_bytes(None, None, nonce)

self._state = VoidPointer()
        result = _raw_salsa20_lib.Salsa20_stream_init(
                        c_uint8_ptr(key),
                        c_size_t(len(key)),
                        c_uint8_ptr(nonce),
                        c_size_t(len(nonce)),
                        self._state.address_of())
        if result:
            raise ValueError("Error %d instantiating a Salsa20 cipher")
        self._state = SmartPointer(self._state.get(),
                                   _raw_salsa20_lib.Salsa20_stream_destroy)

self.block_size = 1
        self.key_size = len(key)

def encrypt(self, plaintext, output=None):
        """Encrypt a piece of data.

Args:
          plaintext(bytes/bytearray/memoryview): The data to encrypt, of any size.
        Keyword Args:
          output(bytes/bytearray/memoryview): The location where the ciphertext
            is written to. If ``None``, the ciphertext is returned.
        Returns:
          If ``output`` is ``None``, the ciphertext is returned as ``bytes``.
          Otherwise, ``None``.
        """
        
        if output is None:
            ciphertext = create_string_buffer(len(plaintext))
        else:
            ciphertext = output
           
            if not is_writeable_buffer(output):
                raise TypeError("output must be a bytearray or a writeable memoryview")
        
            if len(plaintext) != len(output):
                raise ValueError("output must have the same length as the input"
                                 "  (%d bytes)" % len(plaintext))

result = _raw_salsa20_lib.Salsa20_stream_encrypt(
                                         self._state.get(),
                                         c_uint8_ptr(plaintext),
                                         c_uint8_ptr(ciphertext),
                                         c_size_t(len(plaintext)))
        if result:
            raise ValueError("Error %d while encrypting with Salsa20" % result)

if output is None:
            return get_raw_buffer(ciphertext)
        else:
            return None

def decrypt(self, ciphertext, output=None):
        """Decrypt a piece of data.
        
        Args:
          ciphertext(bytes/bytearray/memoryview): The data to decrypt, of any size.
        Keyword Args:
          output(bytes/bytearray/memoryview): The location where the plaintext
            is written to. If ``None``, the plaintext is returned.
        Returns:
          If ``output`` is ``None``, the plaintext is returned as ``bytes``.
          Otherwise, ``None``.
        """

try:
            return self.encrypt(ciphertext, output=output)
        except ValueError as e:
            raise ValueError(str(e).replace("enc", "dec"))

def new(key, nonce=None):
    """Create a new Salsa20 cipher

:keyword key: The secret key to use. It must be 16 or 32 bytes long.
    :type key: bytes/bytearray/memoryview

:keyword nonce:
        A value that must never be reused for any other encryption
        done with this key. It must be 8 bytes long.

If not provided, a random byte string will be generated (you can read
        it back via the ``nonce`` attribute of the returned object).
    :type nonce: bytes/bytearray/memoryview

:Return: a :class:`Cryptodome.Cipher.Salsa20.Salsa20Cipher` object
    """

if nonce is None:
        nonce = get_random_bytes(8)

return Salsa20Cipher(key, nonce)

# Size of a data block (in bytes)
block_size = 1

# Size of a key (in bytes)
key_size = (16, 32)

cmd: