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�� r�eZddd�Zdd� ZdS )zqHMAC (Keyed-Hashing for Message Authentication) module.
Implements the HMAC algorithm as described by RFC 2104.
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�|�t�� |dk	�rR| �|� dS )a?  Create a new HMAC object.
        key: bytes or buffer, key for the keyed hash object.
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        digestmod: A hash name suitable for hashlib.new(). *OR*
                   A hashlib constructor returning a new hash object. *OR*
                   A module supporting PEP 247.
                   Required as of 3.8, despite its position after the optional
                   msg argument.  Passing it as a keyword argument is
                   recommended, though not required for legacy API reasons.
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