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e	j�Zej�r�eZddd�ZdS)zxHMAC (Keyed-Hashing for Message Authentication) Python module.

Implements the HMAC algorithm as described by RFC 2104.
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d|jtd�|j}||_t|�|k�r|j|�j�}|j|d�}|jj|jt��|jj|jt��|dk	�rb|j|�dS)a1Create a new HMAC object.

        key:       key for the keyed hash object.
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                   A hash name suitable for hashlib.new().
                   Defaults to hashlib.md5.
                   Implicit default to hashlib.md5 is deprecated and will be
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rcCsX|dkrtd��t|t�r"|j�St|�r2|d�}t|tj�sFtd��|jj�j	dd�S)Nz.'digestmod' argument is mandatory in FIPS moderz6Only OpenSSL hashlib hashes are accepted in FIPS mode.�_�-)
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