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a b�h0 � @ sZ d dl mZ d dlmZmZmZmZmZmZm Z d dl m Z G dd� de �Z d dd�ZdS ) � )�bord)�load_pycryptodome_raw_lib� VoidPointer� SmartPointer�create_string_buffer�get_raw_buffer�c_size_t� c_uint8_ptr)�_raw_keccak_libc @ s8 e Zd ZdZdZd dd�Zdd� Zdd � Zd d d �ZdS )� SHAKE128_XOFz�A SHAKE128 hash object. Do not instantiate directly. Use the :func:`new` function. :ivar oid: ASN.1 Object ID :vartype oid: string z2.16.840.1.101.3.4.2.11Nc C sV t � }t�|�� td�d�}|r,td| ��t|�� tj�| _ d| _ |rR| � |� d S )N� � z%Error %d while instantiating SHAKE128F) r r Z keccak_initZ address_ofr � ValueErrorr �getZkeccak_destroy�_state� _is_squeezing�update)�self�data�state�result� r ��/root/rpmbuild/BUILDROOT/imh-python39-modules-3.9.7-92.el8.x86_64/opt/imh-python/lib/python3.9/site-packages/Cryptodome/Hash/SHAKE128.py�__init__5 s ���zSHAKE128_XOF.__init__c C sB | j rtd��t�| j�� t|�tt|���}|r>t d| ��| 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 SHAKE128 state) r � TypeErrorr Z keccak_absorbr r r r �lenr )r r r r r r r C s ��zSHAKE128_XOF.updatec C s> d| _ t|�}t�| j�� |t|��}|r6td| ��t|�S )ah 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 SHAKE128) r r r Zkeccak_squeezer r r r r )r �lengthZbfrr r r r �readU s ��zSHAKE128_XOF.readc C s t | �|d�S )N�r )�type)r r r r r �newo s zSHAKE128_XOF.new)N)N) �__name__� __module__� __qualname__�__doc__�oidr r r r r r r r r ) s r Nc C s t | d�S )a Return a fresh instance of a SHAKE128 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:`SHAKE128_XOF` object r )r r r r r r s s r )N)ZCryptodome.Util.py3compatr ZCryptodome.Util._raw_apir r r r r r r ZCryptodome.Hash.keccakr �objectr r r r r r �<module> s $ J
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