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� KMAC_Hashz[A KMAC hash object.
Do not instantiate directly.
Use the :func:`new` function.
c � � d|z | _ || _ d | _ t t t |� � � � |� � }|� ||d� � | _ |r | j � |� � d S d S )Nz2.16.840.1.101.3.4.2.s KMAC) �oid� digest_size�_macr r r �_new�_cshake�update) �self�data�key�mac_len�custom� oid_variant�cshake�rate� partial_newXs �u/builddir/build/BUILD/imunify360-venv-2.5.3/opt/imunify360/venv/lib64/python3.11/site-packages/Crypto/Hash/KMAC128.py�__init__zKMAC_Hash.__init__. s� � � +�[�8���"����� � � �G�C�L�L� 9� 9�4�@�@� � �{�{�<���A�A�� � � &� �L� � �� %� %� %� %� %� &� &� c �f � | j rt d� � �| j � |� � | S )z�Authenticate the next chunk of message.
Args:
data (bytes/bytearray/memoryview): The next chunk of the message to
authenticate.
z8You can only call 'digest' or 'hexdigest' on this object)r � TypeErrorr r )r r s r r zKMAC_Hash.update= s9 � � �9� X�� V�W�W� W� � ���D�!�!�!�� r" c �� � | j sS| j � t | j dz � � � � | j � | j � � | _ | j S )z�Return the **binary** (non-printable) MAC tag of the message.
:return: The MAC tag. Binary form.
:rtype: byte string
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r �read�r s r �digestzKMAC_Hash.digestK sV � � �y� <� �L� � �
�d�.>��.B� C� C� D� D� D� � �)�)�$�*:�;�;�D�I��y�r" c �~ � d� d� t | � � � � � D � � � � S )z�Return the **printable** MAC tag of the message.
:return: The MAC tag. Hexadecimal encoded.
:rtype: string
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<listcomp>z'KMAC_Hash.hexdigest.<locals>.<listcomp>_ s# � �G�G�G�Q���a���(�G�G�Gr" )�join�tupler) r( s r � hexdigestzKMAC_Hash.hexdigestX s5 � � �w�w�G�G�%�� � �
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�2F�2F�G�G�G�H�H�Hr" c � � t d� � }t j ||z � � }t j || � � � z � � }|� � � |� � � k rt d� � �dS )a` Verify that a given **binary** MAC (computed by another party)
is valid.
Args:
mac_tag (bytes/bytearray/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.
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ValueError)r �mac_tag�secret�mac1�mac2s r �verifyzKMAC_Hash.verifya ss � � "�"�%�%���|�F�W� ,�-�-���|�F�T�[�[�]�]� 2�3�3�� �;�;�=�=�D�K�K�M�M� )� )� � /�0�0� 0� *� )r" c �d � | � t t |� � � � � � dS )an 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.
N)r; r r )r � hex_mac_tags r � hexverifyzKMAC_Hash.hexverifyu s, � �
� � �I�g�k� 2� 2�3�3�4�4�4�4�4r" c �6 � d|vr
| j |d< t di |��S )zNReturn a new instance of a KMAC hash object.
See :func:`new`.
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KMAC_Hash.new� s, � �
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&� � � � � � �I� I� I�1� 1� 1�( 5� 5� 5� � � � � r" r c �� � | � dd� � }t |� � st d� � �t |� � dk rt d� � �| � dd� � }| � dd� � }|d k rt d
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||||dt d� � S )a� Create a new KMAC128 object.
Args:
key (bytes/bytearray/memoryview):
The key to use to compute the MAC.
It must be at least 128 bits long (16 bytes).
data (bytes/bytearray/memoryview):
Optional. The very first chunk of the message to authenticate.
It is equivalent to an early call to :meth:`KMAC_Hash.update`.
mac_len (integer):
Optional. The size of the authentication tag, in bytes.
Default is 64. Minimum is 8.
custom (bytes/bytearray/memoryview):
Optional. A customization byte string (``S`` in SP 800-185).
Returns:
A :class:`KMAC_Hash` hash object
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