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📁 ..
📄 BLAKE2b.py(9.22 KB)
📄 BLAKE2b.pyi(877 B)
📄 BLAKE2s.py(9.22 KB)
📄 BLAKE2s.pyi(739 B)
📄 CMAC.py(10.14 KB)
📄 CMAC.pyi(797 B)
📄 HMAC.py(6.88 KB)
📄 HMAC.pyi(624 B)
📄 MD2.py(5.98 KB)
📄 MD2.pyi(492 B)
📄 MD4.py(6.44 KB)
📄 MD4.pyi(532 B)
📄 MD5.py(6.47 KB)
📄 MD5.pyi(492 B)
📄 Poly1305.py(7.92 KB)
📄 Poly1305.pyi(665 B)
📄 RIPEMD.py(1.18 KB)
📄 RIPEMD.pyi(98 B)
📄 RIPEMD160.py(6.26 KB)
📄 RIPEMD160.pyi(516 B)
📄 SHA.py(1.13 KB)
📄 SHA.pyi(169 B)
📄 SHA1.py(6.54 KB)
📄 SHA1.pyi(536 B)
📄 SHA224.py(6.75 KB)
📄 SHA224.pyi(544 B)
📄 SHA256.py(6.75 KB)
📄 SHA256.pyi(612 B)
📄 SHA384.py(6.75 KB)
📄 SHA384.pyi(544 B)
📄 SHA3_224.py(5.18 KB)
📄 SHA3_224.pyi(504 B)
📄 SHA3_256.py(5.18 KB)
📄 SHA3_256.pyi(504 B)
📄 SHA3_384.py(5.18 KB)
📄 SHA3_384.pyi(504 B)
📄 SHA3_512.py(5.18 KB)
📄 SHA3_512.pyi(504 B)
📄 SHA512.py(7.55 KB)
📄 SHA512.pyi(622 B)
📄 SHAKE128.py(4.55 KB)
📄 SHAKE128.pyi(437 B)
📄 SHAKE256.py(4.55 KB)
📄 SHAKE256.pyi(437 B)
📄 _BLAKE2b.abi3.so(7.46 KB)
📄 _BLAKE2s.abi3.so(6.98 KB)
📄 _MD2.abi3.so(6.59 KB)
📄 _MD4.abi3.so(7.34 KB)
📄 _MD5.abi3.so(9.47 KB)
📄 _RIPEMD160.abi3.so(7.08 KB)
📄 _SHA1.abi3.so(11.44 KB)
📄 _SHA224.abi3.so(14.03 KB)
📄 _SHA256.abi3.so(14.03 KB)
📄 _SHA384.abi3.so(17.78 KB)
📄 _SHA512.abi3.so(17.94 KB)
📄 __init__.py(1.09 KB)
📄 __init__.pyi(0 B)
📁 __pycache__
📄 _ghash_clmul.abi3.so(5.91 KB)
📄 _ghash_portable.abi3.so(5.73 KB)
📄 _keccak.abi3.so(8.12 KB)
📄 _poly1305.abi3.so(6.64 KB)
📄 keccak.py(6.95 KB)
📄 keccak.pyi(741 B)

Editing: keccak.py

# ===================================================================
#
# Copyright (c) 2015, Legrandin <helderijs@gmail.com>
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# 1. Redistributions of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer in
#    the documentation and/or other materials provided with the
#    distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
# COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
# ===================================================================

from Cryptodome.Util.py3compat import bord

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_keccak_lib = load_pycryptodome_raw_lib("Cryptodome.Hash._keccak",
                        """
                        int keccak_init(void **state,
                                        size_t capacity_bytes,
                                        uint8_t padding_byte);
                        int keccak_destroy(void *state);
                        int keccak_absorb(void *state,
                                          const uint8_t *in,
                                          size_t len);
                        int keccak_squeeze(const void *state,
                                           uint8_t *out,
                                           size_t len);
                        int keccak_digest(void *state, uint8_t *digest, size_t len);
                        """)

class Keccak_Hash(object):
    """A Keccak hash object.
    Do not instantiate directly.
    Use the :func:`new` function.

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

def __init__(self, data, digest_bytes, update_after_digest):
        # The size of the resulting hash in bytes.
        self.digest_size = digest_bytes

self._update_after_digest = update_after_digest
        self._digest_done = False

state = VoidPointer()
        result = _raw_keccak_lib.keccak_init(state.address_of(),
                                             c_size_t(self.digest_size * 2),
                                             0x01)
        if result:
            raise ValueError("Error %d while instantiating keccak" % result)
        self._state = SmartPointer(state.get(),
                                   _raw_keccak_lib.keccak_destroy)
        if data:
            self.update(data)

def update(self, data):
        """Continue hashing of a message by consuming the next chunk of data.

Args:
            data (byte string/byte array/memoryview): The next chunk of the message being hashed.
        """

if self._digest_done and not self._update_after_digest:
            raise TypeError("You can only call 'digest' or 'hexdigest' on this object")

result = _raw_keccak_lib.keccak_absorb(self._state.get(),
                                               c_uint8_ptr(data),
                                               c_size_t(len(data)))
        if result:
            raise ValueError("Error %d while updating keccak" % result)
        return self

def digest(self):
        """Return the **binary** (non-printable) digest of the message that has been hashed so far.

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

self._digest_done = True
        bfr = create_string_buffer(self.digest_size)
        result = _raw_keccak_lib.keccak_digest(self._state.get(),
                                               bfr,
                                               c_size_t(self.digest_size))
        if result:
            raise ValueError("Error %d while squeezing keccak" % result)

return get_raw_buffer(bfr)

def hexdigest(self):
        """Return the **printable** digest of the message that has been hashed so far.

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

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

def new(self, **kwargs):
        """Create a fresh Keccak hash object."""

if "digest_bytes" not in kwargs and "digest_bits" not in kwargs:
            kwargs["digest_bytes"] = self.digest_size

return new(**kwargs)

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

Args:
        data (bytes/bytearray/memoryview):
            The very first chunk of the message to hash.
            It is equivalent to an early call to :meth:`Keccak_Hash.update`.
        digest_bytes (integer):
            The size of the digest, in bytes (28, 32, 48, 64).
        digest_bits (integer):
            The size of the digest, in bits (224, 256, 384, 512).
        update_after_digest (boolean):
            Whether :meth:`Keccak.digest` can be followed by another
            :meth:`Keccak.update` (default: ``False``).

:Return: A :class:`Keccak_Hash` hash object
    """

data = kwargs.pop("data", None)
    update_after_digest = kwargs.pop("update_after_digest", False)

digest_bytes = kwargs.pop("digest_bytes", None)
    digest_bits = kwargs.pop("digest_bits", None)
    if None not in (digest_bytes, digest_bits):
        raise TypeError("Only one digest parameter must be provided")
    if (None, None) == (digest_bytes, digest_bits):
        raise TypeError("Digest size (bits, bytes) not provided")
    if digest_bytes is not None:
        if digest_bytes not in (28, 32, 48, 64):
            raise ValueError("'digest_bytes' must be: 28, 32, 48 or 64")
    else:
        if digest_bits not in (224, 256, 384, 512):
            raise ValueError("'digest_bytes' must be: 224, 256, 384 or 512")
        digest_bytes = digest_bits // 8

if kwargs:
        raise TypeError("Unknown parameters: " + str(kwargs))

return Keccak_Hash(data, digest_bytes, update_after_digest)

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