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a f�Wc � @ sp d Z ddlZddlZddlmZ dd� Zdd� Zd�� Zdd d �Z dd d �Z dd d�Z dd� Z e dkrle � dS )zLpasslib.crypto._blowfish._gen_files - meta script that generates unrolled.py� N)�irangec s d� � fdd�t|�D ��S )Nz, c 3 s | ]}� t |� V qd S )N)�str)�.0�x��name� �G/usr/lib/python3.9/site-packages/passlib/crypto/_blowfish/_gen_files.py� <genexpr> � zvarlist.<locals>.<genexpr>)�joinr )r �countr r r �varlist s r c s" | � d�}d�� fdd�|D ��S )zident block of text� c 3 s | ]}|r� | nd V qdS )� Nr )r �line��paddingr r r s �z indent_block.<locals>.<genexpr>)�splitr )�blockr �linesr r r � indent_block s �r z ((((S0[l >> 24] + S1[(l >> 16) & 0xff]) ^ S2[(l >> 8) & 0xff]) + S3[l & 0xff]) & 0xffffffff) c C s< t ddd�D ]*}| |d||d |d tt�dd�d� q d S ) Nr � � z� # Feistel substitution on left word (round %(i)d) r ^= %(left)s ^ p%(i1)d # Feistel substitution on right word (round %(i1)d) l ^= %(right)s ^ p%(i2)d � �l�r)�i�i1Zi2�left�right)r �BFSTR�replace��write�indentr r r r �render_encipher s �r& c C s* | |d� t | |d � | |d d� d S )Na2 def encipher(self, l, r): """blowfish encipher a single 64-bit block encoded as two 32-bit ints""" (p0, p1, p2, p3, p4, p5, p6, p7, p8, p9, p10, p11, p12, p13, p14, p15, p16, p17) = self.P S0, S1, S2, S3 = self.S l ^= p0 r z$ return r ^ p17, l )r& )r$ r% r r r �write_encipher_function, s r' c C s� | |d� t d�D ]}| |d d|d� q| |d d� t| |d � | |d d� t ddd�D ]B}| |d d ||d d � t| |d � | |d d ||d d � q`| |d d � t| |d � | |d d� d S )Na� def expand(self, key_words): """unrolled version of blowfish key expansion""" ##assert len(key_words) >= 18, "size of key_words must be >= 18" P, S = self.P, self.S S0, S1, S2, S3 = S #============================================================= # integrate key #============================================================= � r z9 p%(i)d = P[%(i)d] ^ key_words[%(i)d] )r aT #============================================================= # update P #============================================================= #------------------------------------------------ # update P[0] and P[1] #------------------------------------------------ l, r = p0, 0 z- p0, p1 = l, r = r ^ p17, l r z� #------------------------------------------------ # update P[%(i)d] and P[%(i1)d] #------------------------------------------------ l ^= p0 )r r z= p%(i)d, p%(i1)d = l, r = r ^ p17, l a #------------------------------------------------ # save changes to original P array #------------------------------------------------ P[:] = (p0, p1, p2, p3, p4, p5, p6, p7, p8, p9, p10, p11, p12, p13, p14, p15, p16, p17) #============================================================= # update S #============================================================= for box in S: j = 0 while j < 256: l ^= p0 � zU box[j], box[j+1] = l, r = r ^ p17, l j += 2 )r r& r# r r r �write_expand_function@ s& � � �r* c s\ t j�t j�t�d�} t| d�� � fdd�}|dd� t|dd� t|dd� |dd � d S ) Nz unrolled.py�wc sP |� dd�}|r||; }|s,t�|�d��}| rBt|d| d �}� �|� d S )N�literalF� � )�pop�textwrap�dedent�rstripr r$ )r% �msg�kwdsr, �Zfhr r r$ � s zmain.<locals>.writer aJ """passlib.crypto._blowfish.unrolled - unrolled loop implementation of bcrypt, autogenerated by _gen_files.py currently this override the encipher() and expand() methods with optimized versions, and leaves the other base.py methods alone. """ #================================================================= # imports #================================================================= # pkg from passlib.crypto._blowfish.base import BlowfishEngine as _BlowfishEngine # local __all__ = [ "BlowfishEngine", ] #================================================================= # #================================================================= class BlowfishEngine(_BlowfishEngine): r )r% a] #================================================================= # eoc #================================================================= #================================================================= # eof #================================================================= )�os�pathr �dirname�__file__�filer' r* )�targetr$ r r5 r �main� s r< �__main__)r )r )r )�__doc__r6 r0 Zpasslib.utils.compatr r r �stripr! r& r' r* r< �__name__r r r r �<module> s U2
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