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ddd��YZdZdZdZdd�Zedkr�dZee�Zeje�ndS(s�A sample implementation of SHA-1 in pure Python.

   Framework adapted from Dinu Gherman's MD5 implementation by
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cCs||>|d|?BS(s)Rotate x (32 bit) left n bits circularly.i ((txR((sE/usr/lib/python2.7/site-packages/setuptools/_backport/hashlib/_sha.pyt_rotateLeftNscCs||@||@BS(N((tBtCtD((sE/usr/lib/python2.7/site-packages/setuptools/_backport/hashlib/_sha.pytf0_19YscCs||A|AS(N((RRR((sE/usr/lib/python2.7/site-packages/setuptools/_backport/hashlib/_sha.pytf20_39\scCs||@||@B||@BS(N((RRR((sE/usr/lib/python2.7/site-packages/setuptools/_backport/hashlib/_sha.pytf40_59_scCs||A|AS(N((RRR((sE/usr/lib/python2.7/site-packages/setuptools/_backport/hashlib/_sha.pytf60_79bsi�y�Zi���nl�<7l�A�tshacBs]eZdZdZZdZd�Zd�Zd�Zd�Z	d�Z
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s:An implementation of the MD5 hash function in pure Python.iicCs/d|_ddg|_g|_|j�dS(sInitialisation.iN(tlengthtcounttinputtinit(tself((sE/usr/lib/python2.7/site-packages/setuptools/_backport/hashlib/_sha.pyt__init__vs		cCsCd|_g|_d|_d|_d|_d|_d|_dS(s9Initialize the message-digest and set all fields to zero.ii#Egl�+�_l�\u1ivT2l�a�N(RR!tH0tH1tH2tH3tH4(R#((sE/usr/lib/python2.7/site-packages/setuptools/_backport/hashlib/_sha.pyR"�s						c	Cs�x]tdd�D]L}|jt||d||dA||dA||dAd�d@�qW|j}|j}|j}|j}|j}xztdd	�D]i}t|d
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�||A|A|||td}|}|}t|d�d@}|}|d@}qW|j|d@|_|j|d@|_|j|d@|_|j|d@|_|j|d@|_dS(NiiPiiiil��iiiii(i<i(	RtappendRR%R&R'R(R)tK(	R#tWtttARRRtEtTEMP((sE/usr/lib/python2.7/site-packages/setuptools/_backport/hashlib/_sha.pyt
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4/;/cCsRt|�}|jdd?d@}|jd|d>|jd<|jd|d>kro|jdd|jd<n|jd|d?|jd<d|}||kr2t|| �|j|)|jt|j��|}xw|d|kr|jtt|||d!���|d}q�Wt|||!�|_nd}|jt|�|_dS(s�Add to the current message.

        Update the md5 object with the string arg. Repeated calls
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        to m.update(a+b).

        The hash is immediately calculated for all full blocks. The final
        calculation is made in digest(). It will calculate 1-2 blocks,
        depending on how much padding we have to add. This allows us to
        keep an intermediate value for the hash, so that we only need to
        make minimal recalculation if we call update() to add more data
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Cs]|j}|j}|j}|j}|j}g|j}g|j}|jdd?d@}|dkrud|}	n
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|jd�}||_||_||_||_||_||_||_|S(	s�Terminate the message-digest computation and return digest.

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?							cCs0djg|j�D]}dt|�^q�S(sTerminate and return digest in HEX form.

        Like digest() except the digest is returned as a string of
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        Rs%02x(tjoinR:R(R#tc((sE/usr/lib/python2.7/site-packages/setuptools/_backport/hashlib/_sha.pyt	hexdigest0scCs
tj|�S(s�Return a clone object.

        Return a copy ('clone') of the md5 object. This can be used
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iicCs#t�}|r|j|�n|S(saReturn a new sha crypto object.

    If arg is present, the method call update(arg) is made.
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