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KMAC128.cpython-311.pyc
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� ��gh= � �x � d dl mZ d dlmZmZmZ d dlmZ ddlm Z m Z ddl m Z m Z m Z G d� de� � Zd � Zd S ) � )� unhexlify)�bord�tobytes�is_bytes)�get_random_bytes� )� cSHAKE128�SHA3_256)�_bytepad� _encode_str� _right_encodec �< � e Zd ZdZd� Zd� Zd� Zd� Zd� Zd� Z d� Z d S ) � 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-2.6.0/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 � )r r r r 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 � c �2 � g | ]}d t |� � z ��S )z%02x)r )�.0�xs r � <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�%�� � � � �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. � zMAC check failedN)r r �newr) � 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`. r � )r r5 )r �kwargss r r5 z KMAC_Hash.new� s, � � �F� "� "� $� 0�F�9� ��}�}�V�}�}� r" N) �__name__� __module__� __qualname__�__doc__r! r r) r2 r; r> r5 r@ r" r r r ( s� � � � � � �� � &� &� &� � � � � � �I� I� I�1� 1� 1�( 5� 5� 5� � � � � r" r c �� � | � dd� � }t |� � st d� � �t |� � dk rt d� � �| � dd� � }| � dd� � }|d k rt d � � �| � d d � � }| r t d t | � � z � � �t ||||dt d� � S )a� Create a new KMAC128 object. Args: key (bytes/bytearray/memoryview): The key to use to compute the MAC. It must be at least 128 bits long (16 bytes). data (bytes/bytearray/memoryview): Optional. The very first chunk of the message to authenticate. It is equivalent to an early call to :meth:`KMAC_Hash.update`. mac_len (integer): Optional. The size of the authentication tag, in bytes. Default is 64. Minimum is 8. custom (bytes/bytearray/memoryview): Optional. A customization byte string (``S`` in SP 800-185). Returns: A :class:`KMAC_Hash` hash object r Nz You must pass a key to KMAC128r4 z1The key must be at least 128 bits long (16 bytes)r r �@ r& z!'mac_len' must be 8 bytes or morer r" zUnknown parameters: �19� )�popr r$ �lenr6 �strr r )rA r r r r s r r5 r5 � s� � �( �*�*�U�D� !� !�C� �C�=�=� :��8�9�9�9� �3�x�x�"�}�}��L�M�M�M� �:�:�f�d� #� #�D��j�j��B�'�'�G���{�{��<�=�=�=� �Z�Z��#� &� &�F� � >��.��V���<�=�=�=� �T�3����y�#� F� F�Fr" N)�binasciir �Crypto.Util.py3compatr r r � Crypto.Randomr r+ r r r r r �objectr r5 r@ r" r �<module>rQ s� ��> � � � � � � 9� 9� 9� 9� 9� 9� 9� 9� 9� 9� *� *� *� *� *� *� !� !� !� !� !� !� !� !� ;� ;� ;� ;� ;� ;� ;� ;� ;� ;�c � c � c � c � c �� c � c � c �L%G� %G� %G� %G� %Gr"