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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: SHA3_256.py

# -*- coding: utf-8 -*-
#
# ===================================================================
# 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 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)

from Cryptodome.Hash.keccak import _raw_keccak_lib

class SHA3_256_Hash(object):
    """A SHA3-256 hash object.
    Do not instantiate directly.
    Use the :func:`new` function.

:ivar oid: ASN.1 Object ID
    :vartype oid: string

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

# The size of the resulting hash in bytes.
    digest_size = 32

# ASN.1 Object ID
    oid = "2.16.840.1.101.3.4.2.8"

def __init__(self, data, update_after_digest):
        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),
                                             0x06)
        if result:
            raise ValueError("Error %d while instantiating SHA-3/256"
                             % 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 SHA-3/256"
                             % 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 instantiating SHA-3/256"
                             % result)

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

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):
        """Create a fresh SHA3-256 hash object."""

return type(self)(None, self._update_after_digest)

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

Args:
        data (byte string/byte array/memoryview):
            The very first chunk of the message to hash.
            It is equivalent to an early call to :meth:`update`.
        update_after_digest (boolean):
            Whether :meth:`digest` can be followed by another :meth:`update`
            (default: ``False``).

:Return: A :class:`SHA3_256_Hash` hash object
    """

data = kwargs.pop("data", None)
    update_after_digest = kwargs.pop("update_after_digest", False)
    if len(args) == 1:
        if data:
            raise ValueError("Initial data for hash specified twice")
        data = args[0]

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

return SHA3_256_Hash(data, update_after_digest)

# The size of the resulting hash in bytes.
digest_size = SHA3_256_Hash.digest_size

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Editing: SHA3_256.py

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