FM / Hash

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

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

Name	Size	Mode	Actions
__pycache__/	-	0755	rm
BLAKE2b.py	9440	0644	edit dl rm
BLAKE2b.pyi	877	0644	edit dl rm
BLAKE2s.py	9446	0644	edit dl rm
BLAKE2s.pyi	739	0644	edit dl rm
CMAC.py	10448	0644	edit dl rm
CMAC.pyi	797	0644	edit dl rm
HMAC.py	7062	0644	edit dl rm
HMAC.pyi	624	0644	edit dl rm
keccak.py	7118	0644	edit dl rm
keccak.pyi	741	0644	edit dl rm
MD2.py	6123	0644	edit dl rm
MD2.pyi	492	0644	edit dl rm
MD4.py	6598	0644	edit dl rm
MD4.pyi	532	0644	edit dl rm
MD5.py	6630	0644	edit dl rm
MD5.pyi	492	0644	edit dl rm
Poly1305.py	8106	0644	edit dl rm
Poly1305.pyi	665	0644	edit dl rm
RIPEMD.py	1211	0644	edit dl rm
RIPEMD.pyi	98	0644	edit dl rm
RIPEMD160.py	6410	0644	edit dl rm
RIPEMD160.pyi	516	0644	edit dl rm
SHA.py	1156	0644	edit dl rm
SHA.pyi	169	0644	edit dl rm
SHA1.py	6702	0644	edit dl rm
SHA1.pyi	536	0644	edit dl rm
SHA3_224.py	5302	0644	edit dl rm
SHA3_224.pyi	504	0644	edit dl rm
SHA3_256.py	5302	0644	edit dl rm
SHA3_256.pyi	504	0644	edit dl rm
SHA3_384.py	5302	0644	edit dl rm
SHA3_384.pyi	504	0644	edit dl rm
SHA3_512.py	5304	0644	edit dl rm
SHA3_512.pyi	504	0644	edit dl rm
SHA224.py	6913	0644	edit dl rm
SHA224.pyi	544	0644	edit dl rm
SHA256.py	6909	0644	edit dl rm
SHA256.pyi	612	0644	edit dl rm
SHA384.py	6911	0644	edit dl rm
SHA384.pyi	544	0644	edit dl rm
SHA512.py	7732	0644	edit dl rm
SHA512.pyi	622	0644	edit dl rm
SHAKE128.py	4656	0644	edit dl rm
SHAKE128.pyi	437	0644	edit dl rm
SHAKE256.py	4656	0644	edit dl rm
SHAKE256.pyi	437	0644	edit dl rm
_BLAKE2b.cpython-39-x86_64-linux-gnu.so	9856	0755	edit dl rm
_BLAKE2s.cpython-39-x86_64-linux-gnu.so	9952	0755	edit dl rm
_ghash_clmul.cpython-39-x86_64-linux-gnu.so	8016	0755	edit dl rm
_ghash_portable.cpython-39-x86_64-linux-gnu.so	8592	0755	edit dl rm
_keccak.cpython-39-x86_64-linux-gnu.so	10648	0755	edit dl rm
_MD2.cpython-39-x86_64-linux-gnu.so	9048	0755	edit dl rm
_MD4.cpython-39-x86_64-linux-gnu.so	9664	0755	edit dl rm
_MD5.cpython-39-x86_64-linux-gnu.so	11760	0755	edit dl rm
_poly1305.cpython-39-x86_64-linux-gnu.so	9600	0755	edit dl rm
_RIPEMD160.cpython-39-x86_64-linux-gnu.so	10560	0755	edit dl rm
_SHA1.cpython-39-x86_64-linux-gnu.so	14872	0755	edit dl rm
_SHA224.cpython-39-x86_64-linux-gnu.so	17744	0755	edit dl rm
_SHA256.cpython-39-x86_64-linux-gnu.so	17744	0755	edit dl rm
_SHA384.cpython-39-x86_64-linux-gnu.so	21376	0755	edit dl rm
_SHA512.cpython-39-x86_64-linux-gnu.so	21416	0755	edit dl rm
__init__.py	1119	0644	edit dl rm
__init__.pyi	0	0644	edit dl rm

Edit: /opt/imh-python/lib/python3.9/site-packages/Cryptodome/Hash/Poly1305.py (8106B)

# -*- coding: utf-8 -*-
#
# Hash/Poly1305.py - Implements the Poly1305 MAC
#
# ===================================================================
# 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 binascii import unhexlify

from Cryptodome.Util.py3compat import bord, tobytes, _copy_bytes

from Cryptodome.Hash import BLAKE2s
from Cryptodome.Random import get_random_bytes
from Cryptodome.Util._raw_api import (load_pycryptodome_raw_lib,
                                  VoidPointer, SmartPointer,
                                  create_string_buffer,
                                  get_raw_buffer, c_size_t,
                                  c_uint8_ptr)

_raw_poly1305 = load_pycryptodome_raw_lib("Cryptodome.Hash._poly1305",
                        """
                        int poly1305_init(void **state,
                                          const uint8_t *r,
                                          size_t r_len,
                                          const uint8_t *s,
                                          size_t s_len);
                        int poly1305_destroy(void *state);
                        int poly1305_update(void *state,
                                            const uint8_t *in,
                                            size_t len);
                        int poly1305_digest(const void *state,
                                            uint8_t *digest,
                                            size_t len);
                        """)

class Poly1305_MAC(object):
    """An Poly1305 MAC object.
    Do not instantiate directly. Use the :func:`new` function.

:ivar digest_size: the size in bytes of the resulting MAC tag
    :vartype digest_size: integer
    """

digest_size = 16

def __init__(self, r, s, data):

if len(r) != 16:
            raise ValueError("Parameter r is not 16 bytes long")
        if len(s) != 16:
            raise ValueError("Parameter s is not 16 bytes long")

self._mac_tag = None

state = VoidPointer()
        result = _raw_poly1305.poly1305_init(state.address_of(),
                                             c_uint8_ptr(r),
                                             c_size_t(len(r)),
                                             c_uint8_ptr(s),
                                             c_size_t(len(s))
                                             )
        if result:
            raise ValueError("Error %d while instantiating Poly1305" % result)
        self._state = SmartPointer(state.get(),
                                   _raw_poly1305.poly1305_destroy)
        if data:
            self.update(data)

def update(self, data):
        """Authenticate the next chunk of message.

Args:
            data (byte string/byte array/memoryview): The next chunk of data
        """

if self._mac_tag:
            raise TypeError("You can only call 'digest' or 'hexdigest' on this object")

result = _raw_poly1305.poly1305_update(self._state.get(),
                                               c_uint8_ptr(data),
                                               c_size_t(len(data)))
        if result:
            raise ValueError("Error %d while hashing Poly1305 data" % result)
        return self

def copy(self):
        raise NotImplementedError()

def digest(self):
        """Return the **binary** (non-printable) MAC tag of the message
        authenticated so far.

:return: The MAC tag digest, computed over the data processed so far.
                 Binary form.
        :rtype: byte string
        """

if self._mac_tag:
            return self._mac_tag
        
        bfr = create_string_buffer(16)
        result = _raw_poly1305.poly1305_digest(self._state.get(),
                                               bfr,
                                               c_size_t(len(bfr)))
        if result:
            raise ValueError("Error %d while creating Poly1305 digest" % result)

self._mac_tag = get_raw_buffer(bfr)
        return self._mac_tag

def hexdigest(self):
        """Return the **printable** MAC tag of the message authenticated so far.

:return: The MAC tag, computed over the data processed so far.
                 Hexadecimal encoded.
        :rtype: string
        """

return "".join(["%02x" % bord(x)
                        for x in tuple(self.digest())])

def verify(self, mac_tag):
        """Verify that a given **binary** MAC (computed by another party)
        is valid.

Args:
          mac_tag (byte string/byte string/memoryview): the expected MAC of the message.

Raises:
            ValueError: if the MAC does not match. It means that the message
                has been tampered with or that the MAC key is incorrect.
        """

secret = get_random_bytes(16)

mac1 = BLAKE2s.new(digest_bits=160, key=secret, data=mac_tag)
        mac2 = BLAKE2s.new(digest_bits=160, key=secret, data=self.digest())

if mac1.digest() != mac2.digest():
            raise ValueError("MAC check failed")

def hexverify(self, hex_mac_tag):
        """Verify that a given **printable** MAC (computed by another party)
        is valid.

Args:
            hex_mac_tag (string): the expected MAC of the message,
                as a hexadecimal string.

Raises:
            ValueError: if the MAC does not match. It means that the message
                has been tampered with or that the MAC key is incorrect.
        """

self.verify(unhexlify(tobytes(hex_mac_tag)))

def new(**kwargs):
    """Create a new Poly1305 MAC object.

Args:
        key (bytes/bytearray/memoryview):
            The 32-byte key for the Poly1305 object.
        cipher (module from ``Cryptodome.Cipher``):
            The cipher algorithm to use for deriving the Poly1305
            key pair *(r, s)*.
            It can only be ``Cryptodome.Cipher.AES`` or ``Cryptodome.Cipher.ChaCha20``.
        nonce (bytes/bytearray/memoryview):
            Optional. The non-repeatable value to use for the MAC of this message.
            It must be 16 bytes long for ``AES`` and 8 or 12 bytes for ``ChaCha20``.
            If not passed, a random nonce is created; you will find it in the
            ``nonce`` attribute of the new object.
        data (bytes/bytearray/memoryview):
            Optional. The very first chunk of the message to authenticate.
            It is equivalent to an early call to ``update()``.

Returns:
        A :class:`Poly1305_MAC` object
    """

cipher = kwargs.pop("cipher", None)
    if not hasattr(cipher, '_derive_Poly1305_key_pair'):
        raise ValueError("Parameter 'cipher' must be AES or ChaCha20")

cipher_key = kwargs.pop("key", None)
    if cipher_key is None:
        raise TypeError("You must pass a parameter 'key'")

nonce = kwargs.pop("nonce", None)
    data = kwargs.pop("data", None)
    
    if kwargs:
        raise TypeError("Unknown parameters: " + str(kwargs))

r, s, nonce = cipher._derive_Poly1305_key_pair(cipher_key, nonce)
    
    new_mac = Poly1305_MAC(r, s, data)
    new_mac.nonce = _copy_bytes(None, None, nonce)  # nonce may still be just a memoryview
    return new_mac

cmd: