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Edit File: _sha.pyo
� b-�Qc @ s� d Z d Z d Z d d l Z d d l Z d d � Z d � Z d � Z d � Z d � Z d � Z d � Z e e e e g Z d d d d g Z d d d � � YZ d Z d Z d Z d d � Z e d k r� d Z e e � Z e j e � n d S( s� A sample implementation of SHA-1 in pure Python. Framework adapted from Dinu Gherman's MD5 implementation by J. Hallén and L. Creighton. SHA-1 implementation based directly on the text of the NIST standard FIPS PUB 180-1. s 2004-11-17g ��Q� �?i����Ni c C s� d } t j } x1 | d k rB | d | d @� | } | d ?} q Wx: t t | � � D] } | | d k rV PqV qV Wd } d } | | } | d k r� t | � | r� | t | � | d | } n | S( s� Convert a long integer to a byte string. If optional blocksize is given and greater than zero, pad the front of the byte string with binary zeros so that the length is a multiple of blocksize. t i s >II���� i t ( t structt packt ranget len( t nt blocksizet sR t i( ( sE /usr/lib/python2.7/site-packages/setuptools/_backport/hashlib/_sha.pyt _long2bytesBigEndian s c C s� t | � d } d g | } d } d } x� | | k r� t | | � d >} t | | d � d >} t | | d � d >} t | | d � } | | B| B| B| | <| d } | d } q, W| S( s4 Transform a list of characters into a list of longs.i i i i i i i i ( R t ord( t listt imaxt hlt jR t b0t b1t b2t b3( ( sE /usr/lib/python2.7/site-packages/setuptools/_backport/hashlib/_sha.pyt _bytelist2longBigEndian: s c C s | | >| d | ?BS( s) Rotate x (32 bit) left n bits circularly.i ( ( t xR ( ( sE /usr/lib/python2.7/site-packages/setuptools/_backport/hashlib/_sha.pyt _rotateLeftN s c C s | | @| | @BS( N( ( t Bt Ct D( ( sE /usr/lib/python2.7/site-packages/setuptools/_backport/hashlib/_sha.pyt f0_19Y s c C s | | A| AS( N( ( R R R ( ( sE /usr/lib/python2.7/site-packages/setuptools/_backport/hashlib/_sha.pyt f20_39\ s c C s | | @| | @B| | @BS( N( ( R R R ( ( sE /usr/lib/python2.7/site-packages/setuptools/_backport/hashlib/_sha.pyt f40_59_ s c C s | | A| AS( N( ( R R R ( ( sE /usr/lib/python2.7/site-packages/setuptools/_backport/hashlib/_sha.pyt f60_79b s i�y�Zi���nIܼ� I�b� t shac B s] e Z d Z d Z Z d Z d � Z d � Z d � Z d � Z d � Z d � Z d � Z RS( s: An implementation of the MD5 hash function in pure Python.i i c C s/ d | _ d d g | _ g | _ | j � d S( s Initialisation.i N( t lengtht countt inputt init( t self( ( sE /usr/lib/python2.7/site-packages/setuptools/_backport/hashlib/_sha.pyt __init__v s c C sC d | _ g | _ d | _ d | _ d | _ d | _ d | _ d S( s9 Initialize the message-digest and set all fields to zero.i i#EgI���� I�ܺ� ivT2I���� N( R R! t H0t H1t H2t H3t H4( R# ( ( sE /usr/lib/python2.7/site-packages/setuptools/_backport/hashlib/_sha.pyR" � s c C s� x] t d d � D]L } | j t | | d | | d A| | d A| | d Ad � d @� q W| j } | j } | j } | j } | j } xz t d d � D]i } t | d � | | @| | @B| | | t d } | } | } t | d � d @} | } | d @} q� Wxu t d d � D]d } t | d � | | A| A| | | t d } | } | } t | d � d @} | } | d @} qWx� t d d � D]p } t | d � | | @| | @B| | @B| | | t d } | } | } t | d � d @} | } | d @} q�Wxu t d d � D]d } t | d � | | A| A| | | t d } | } | } t | d � d @} | } | d @} qW| j | d @| _ | j | d @| _ | j | d @| _ | j | d @| _ | j | d @| _ d S( Ni iP i i i i I���� i i i i i( i< i ( R t appendR R% R& R' R( R) t K( R# t Wt tt AR R R t Et TEMP( ( sE /usr/lib/python2.7/site-packages/setuptools/_backport/hashlib/_sha.pyt _transform� sR A 4/;/c C sR t | � } | j d d ?d @} | j d | d >| j d <| j d | d >k ro | j d d | j d <n | j d | d ?| j d <d | } | | k r2t | | � | j | )| j t | j � � | } xw | d | k r| j t t | | | d !� � � | d } q� Wt | | | !� | _ n d } | j t | � | _ d S( s� Add to the current message. Update the md5 object with the string arg. Repeated calls are equivalent to a single call with the concatenation of all the arguments, i.e. m.update(a); m.update(b) is equivalent 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 to the hashed string. i i i? i i i@ N( R R R R! R1 R ( R# t inBuft leninBuft indext partLenR ( ( sE /usr/lib/python2.7/site-packages/setuptools/_backport/hashlib/_sha.pyt update� s" $c C s] | j } | j } | j } | j } | j } g | j } g | j } | j d d ?d @} | d k ru d | } n d | } d g d g d } | j | | � t | j d � | } | j | � t | j d � t | j d � t | j d � t | j d � t | j d � } | | _ | | _ | | _ | | _ | | _ | | _ | | _ | S( s� Terminate the message-digest computation and return digest. Return the digest of the strings passed to the update() method so far. This is a 16-byte string which may contain non-ASCII characters, including null bytes. i i i? i8 ix s �R i ( R% R& R' R( R) R! R R6 R R1 R ( R# R% R& R' R( R) R! R R4 t padLent paddingt bitst digest( ( sE /usr/lib/python2.7/site-packages/setuptools/_backport/hashlib/_sha.pyR: � s2 ? c C s0 d j g | j � D] } d t | � ^ q � S( s Terminate and return digest in HEX form. Like digest() except the digest is returned as a string of length 32, containing only hexadecimal digits. This may be used to exchange the value safely in email or other non- binary environments. R s %02x( t joinR: R ( R# t c( ( sE /usr/lib/python2.7/site-packages/setuptools/_backport/hashlib/_sha.pyt hexdigest0 s c C s t j | � S( s� Return a clone object. Return a copy ('clone') of the md5 object. This can be used to efficiently compute the digests of strings that share a common initial substring. ( t copyt deepcopy( R# ( ( sE /usr/lib/python2.7/site-packages/setuptools/_backport/hashlib/_sha.pyR> : s ( t __name__t __module__t __doc__t digest_sizet digestsizet block_sizeR$ R" R1 R6 R: R= R> ( ( ( sE /usr/lib/python2.7/site-packages/setuptools/_backport/hashlib/_sha.pyR p s B + 1 i i c C s# t � } | r | j | � n | S( sa Return a new sha crypto object. If arg is present, the method call update(arg) is made. ( R R6 ( t argt crypto( ( sE /usr/lib/python2.7/site-packages/setuptools/_backport/hashlib/_sha.pyt newQ s t __main__s just a test string( ( RB t __date__t __version__R R> R R R R R R R t fR+ R RC RD R t NoneRH R@ t a_strR R6 ( ( ( sE /usr/lib/python2.7/site-packages/setuptools/_backport/hashlib/_sha.pyt <module> s2 " �