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� Zdd�Zy) � )�bord)�load_pycryptodome_raw_lib� VoidPointer� SmartPointer�create_string_buffer�get_raw_buffer�c_size_t� c_uint8_ptr�c_ubyte)�_raw_keccak_libc �0 � e Zd ZdZdZdd�Zd� Zd� Zdd�Zy) � SHAKE256_XOFz�A SHAKE256 hash object.
Do not instantiate directly.
Use the :func:`new` function.
:ivar oid: ASN.1 Object ID
:vartype oid: string
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d| _ d| _ |r| j |� y y )N�@ � z%Error %d while instantiating SHAKE256F� )r r � keccak_init�
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|� t t |� � � }|rt d|z � �| S )z�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.
z/You cannot call 'update' after the first 'read'z&Error %d while updating SHAKE256 state)
r � TypeErrorr �
keccak_absorbr r r
r �lenr )r r r s r r zSHAKE256_XOF.updateE sm � � � � �� M�N� N� �.�.�t�{�{���/@�/:�4�/@�/7��D� �/B�D�� � � E� %� &� '�
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Compute the next piece of XOF output.
.. note::
You cannot use :meth:`update` anymore after the first call to
:meth:`read`.
Args:
length (integer): the amount of bytes this method must return
:return: the next piece of XOF output (of the given length)
:rtype: byte string
Tz'Error %d while extracting from SHAKE256) r r r �keccak_squeezer r r r r r r )r �length�bfrr s r �readzSHAKE256_XOF.readW su � � "���"�6�*�� �/�/�� � ���0A�03�08��0@�07��
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'� �c�"�"r" c �& � t | � |�� S )N�r )�type)r r s r �newzSHAKE256_XOF.newr s � ��t�D�z�t�$�$r" �N) �__name__�
__module__� __qualname__�__doc__�oidr! r r+ r/ � r" r r r ) s" � �� $�C� � �$#�6%r" r Nc � � t | �� S )a Return a fresh instance of a SHAKE256 object.
Args:
data (bytes/bytearray/memoryview):
The very first chunk of the message to hash.
It is equivalent to an early call to :meth:`update`.
Optional.
:Return: A :class:`SHAKE256_XOF` object
r- )r r- s r r/ r/ v s � � �T� "�"r" r0 )�Cryptodome.Util.py3compatr �Cryptodome.Util._raw_apir r r r r r r
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