mò
ëc4Hc           @   s8   d  f  d „  ƒ  YZ  d „  Z e d j o e ƒ  n d S(   t   bitxormatrixc           B   s2   t  Z d  Z d „  Z d „  Z d „  Z d „  Z RS(   sÁ   	stores two integers and the XOR matrix of every bit with every
		other bit of the two integers.  pre-calculating these saves time,
		when there are several billion bit-compares to perform...
	c         C   s&   | |  _  | |  _ |  i | | ƒ d  S(   N(   t   kt   selft   dt
   pre_rotatet   k_lent   d_len(   R   R   R   R   R   (    (    t/   /home/lkcl/src/crypto/key_as_data/bitrotater.pyt   __init__	   s    		c         C   s*   |  i d | >@d j |  i d | >@d j AS(   Ni   i    (   R   R   t   kbR   t   db(   R   R	   R
   (    (    R   t   _slow_test_bit_eq   s    c         C   s   |  i | d | >@d j S(   Ni   i    (   R   t   kdR
   R	   (   R   R	   R
   (    (    R   t   bit_eq   s    c         C   s‰   h  |  _ d } x" t | ƒ D] } | d | >O} q WxN t | ƒ D]@ } |  i d | >@o |  i	 | A|  i | <qA |  i	 |  i | <qA Wd S(   s/   	assume data length (in bits) is the longer.
		i    i   N(
   R   R   t   kot   rangeR   t   iR   t   dlR   R   (   R   R   R   R   R   R   (    (    R   R      s     	  (   t   __name__t
   __module__t   __doc__R   R   R   R   (    (    (    R   R       s
    			c          C   s   d } d }  t | |  d d ƒ } xW t d ƒ D]I } x@ t d ƒ D]2 } | i | | ƒ | i | | ƒ j p t	 ‚ qA Wq. Wd  S(   Nl   ê l   +i   i   (
   R   R   R    t   tR   R   t   jR   R   t   AssertionError(   R   R   R   R   R   (    (    R   t   test$   s      t   __main__N(   R    R   R   (   R   R    (    (    R   t   ?   s   !	
