관리-도구
편집 파일: des.cpython-39.opt-1.pyc
a f�Wc�� � @ s� d Z ddlZddlmZ ddlmZmZmZmZmZ ddgZ dZ dZ d Z d Z d Zd Zd a a aad d� Zdd� Ze�d�Zdd� Zdd� Zdd� Zdd� Zeddd�Z d d� Z d d � Z d#d d�Z d$d!d"�Z dS )%a� passlib.crypto.des -- DES block encryption routines History ======= These routines (which have since been drastically modified for python) are based on a Java implementation of the des-crypt algorithm, found at `<http://www.dynamic.net.au/christos/crypt/UnixCrypt2.txt>`_. The copyright & license for that source is as follows:: UnixCrypt.java 0.9 96/11/25 Copyright (c) 1996 Aki Yoshida. All rights reserved. Permission to use, copy, modify and distribute this software for non-commercial or commercial purposes and without fee is hereby granted provided that this copyright notice appears in all copies. --- Unix crypt(3C) utility @version 0.9, 11/25/96 @author Aki Yoshida --- modified April 2001 by Iris Van den Broeke, Daniel Deville --- Unix Crypt. Implements the one way cryptography used by Unix systems for simple password protection. @version $Id: UnixCrypt2.txt,v 1.1.1.1 2005/09/13 22:20:13 christos Exp $ @author Greg Wilkins (gregw) The netbsd des-crypt implementation has some nice notes on how this all works - http://fxr.googlebit.com/source/lib/libcrypt/crypt.c?v=NETBSD-CURRENT � N)�exc)�join_byte_values�byte_elem_value�iranger � int_types�expand_des_key�des_encrypt_blocki��� l ����l ���� l �~�}�{�w l l ���s�g c C sP d} d}d}| |f||f||f||f||f||f||f||ffa dadadadS )z3delay loading tables until they are actually needed))r r � r � r � r � r � $ r � r � $ r )r � � l � l � l � @ l @ l @ l @ l D l D l D l D )r r �@ r � r �@ r � r �@ r � r �@ r )r � � @l @� l l Hl H� l l @ l @ l l l H l H )r r � r � r! � r" � r# � r$ � r% � r& )r � � l � l l l � l l l � l l l )r r � r, � r- � r. � @r/ � Pr0 � @r1 � Pr2 )r � @ � l @ � � @ l l @ � � @ l l @ � l @ l l @ )r r � r: � r; � r< � � r= � � r> � � r? � � r@ )r � � � l � � @l @l �@l �@� l � � l � l @ l @ l �@ l �@ )r r � @ rF � rG � @rH � rI � @ rJ � rK � @rL )r � � � l � l � l � l l l l l l l )r r � @ rR � rS �@ rT � rU �@ rV � rW �@ rX )r � � l � l l l � l l l l !l !l !l !)r r � r] � r^ � r_ � r` � ra � rb � rc )r � � l � � l � l � l � � l " l l "� � l " � l � l "� ))r r r r r r r r rG rG rG rG � ri ri ri )r rI r] l r i ( l l ( r, � l l i i ( l l ( )r r r r r^ r^ r^ r^ r= r= r= r= � rk rk rk )r r! 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r � ! � @ ! � @ rp � r� �� � @ ! r r� � @ r rD r� r� r� r� r� rp r� r� r� r� r� r� rp r� r� r� r� r r� rp rD r� r r� r� r� r� r� r� r r� r� r� r� r rD r� r� r� r� r� r� r� )@r� r\ � � @ � @ !� @ � r r` � @ !� @ !� r� � r� r� r� r� r� r� r r� r� r� � @ � @ !r� r� r� r� r\ r` r� r� r� r� r� r\ r` r� r� r� r� r r\ r� r� r� r r� r� r� r� r� r� r` r� r� r� r� r� r� r� r� )@� @ � � � � @ r � � � @ � � � @ r� r � � r � � @ � � @ � @ r rB r r r r r r r r r� r r� r� rB r� r� r� rB r r r r r r r� r r r r� r� r r r r� r r r r r r r� r� r r r r� rB r ))r rB rD rE r\ r� r� r� r r� r� r� r} r� r� r� )r rY r! l r l l l r( l l l r| l l l )r r r r r r� r� r� r r� r� r� r r� r� r� )r � i i i i i i i i i i i i i i)r r* r l r) r+ l l rQ l l l l l l l )r rg r4 l r l @ l @ l @ r l @l @l @l @@l @@l @@l @@)r r: rM i�� r= r> i �� i��� rd l � l l � rx l � l l � )r rS rI i r; i i i rA i i i i i i i)r r3 rC r� rf r� r~ r� r5 r6 r� r� r� r� r� r� )r r^ r] r_ rZ l l l r l l l r l l l )r rU r- r{ r` r� r� r� r, r� r. r� r� r� r� r� )r � � i i i i i i i i i i i i i)r rO r' l rN rP l l r l rq l l l l l )r r re l r7 l l l r[ l l l l l l l )r r rR i@@ rF i@ @ i @@ i@@@ r/ i@ @i @ @i@@ @i @@i@ @@i @@@i@@@@)r r# r i r r$ i i rG i i i i i i iN)�PCXROT�IE3264�SPE�CF6464)ZPC1ROTZPC2ROTAZPC2ROTB� r �6/usr/lib/python3.9/site-packages/passlib/crypto/des.py� _load_tablesQ s GDQ � & r c C s* d}|D ] }||| d@ O }| dL } q|S )zdReturns the permutation of the given 32-bit or 64-bit code with the specified permutation table.r � r# r )�c�p�out�rr r r �_permute9 s r z>Qc C s t �| �S )N��_uint64_struct�pack��valuer r r �_pack64J s r c C s t �| �d S )Nr �r �unpackr r r r � _unpack64M s r! c C s t �| �dd � S )Nr r r r r r �_pack56P s r" c C s t �d| �d S )N� r r r r r r � _unpack56S s r$ �1 i����c s~ t � t�r t� �dkr`td��n@t � t�rR� dk s:� tkrBtd��ttt� ���S t � � dd��t � �� t � fdd�t D ��S ) zDconvert DES from 7 bytes to 8 bytes (by inserting empty parity bits)� zkey must be 7 bytes in sizer z'key must be 56-bit non-negative integer� bytes or int�keyc 3 s | ]}� |? d @ d> V qdS )� r Nr )�.0�shift�r( r r � <genexpr>u � z!expand_des_key.<locals>.<genexpr>)� isinstance�bytes�len� ValueErrorr � INT_56_MASKr! r r" r �ExpectedTypeErrorr$ r � _EXPAND_ITERr, r r, r r c s c C s� t | t�r.t| �dkr td��ttt| ���S t | t�rR| dk sH| tkr`td��nt � | dd��| dL } d}d}|dk r�|| d @ |> O }| dL } |d 7 }qp|S ) zGconvert DES key from 8 bytes to 7 bytes (by discarding the parity bits)rS zkey must be 8 bytes in sizer �'key must be 64-bit non-negative integerr' r( r �8 r) r& ) r/ r0 r1 r2 r" �shrink_des_keyr! r � INT_64_MASKr r4 )r( �result�offsetr r r r8 w s r8 r c C s� t | t�r>t| �dkr t| �} nt| �dkr4td��t| �} nt�| dd��t |t�rtt|�dkrjtd��t|�}nt�|dd��t| |||�}t |�S )a� encrypt single block of data using DES, operates on 8-byte strings. :arg key: DES key as 7 byte string, or 8 byte string with parity bits (parity bit values are ignored). :arg input: plaintext block to encrypt, as 8 byte string. :arg salt: Optional 24-bit integer used to mutate the base DES algorithm in a manner specific to :class:`~passlib.hash.des_crypt` and its variants. The default value ``0`` provides the normal (unsalted) DES behavior. The salt functions as follows: if the ``i``'th bit of ``salt`` is set, bits ``i`` and ``i+24`` are swapped in the DES E-box output. :arg rounds: Optional number of rounds of to apply the DES key schedule. the default (``rounds=1``) provides the normal DES behavior, but :class:`~passlib.hash.des_crypt` and its variants use alternate rounds values. :raises TypeError: if any of the provided args are of the wrong type. :raises ValueError: if any of the input blocks are the wrong size, or the salt/rounds values are out of range. :returns: resulting 8-byte ciphertext block. r& rS zkey must be 7 or 8 bytesr0 r( zinput block must be 8 bytes�input) r/ r0 r1 r r2 r! r r4 �des_encrypt_int_blockr )r( r< �salt�roundsr: r r r r � s ! c C s� |dk rt d��|dk s |tkr(t d��t| t�sBt�| dd��n| dk sR| tkrZt d��t|t�stt�|dd��n|dk s�|tkr�t d ��td u r�t� t \}}}}}} } } d d � } t | | ��} |d @ d> |d@ d> B |d@ d? B |d@ d? B }|dk�rd }}n@|d? d@ |d@ B }t |t �}|d? d@ |d? d@ B }t |t �}|�r�|d8 }| D �]Z\}}|d? |A |@ }|d> |A |A |A }|||d? d @ ||d? d @ A ||d? d @ A ||d ? d @ A ||d? d @ A | |d ? d @ A | |d ? d @ A | |d? d @ A N }|d? |A |@ }|d> |A |A |A }|||d? d @ ||d? d @ A ||d? d @ A ||d ? d @ A ||d? d @ A | |d ? d @ A | |d ? d @ A | |d? d @ A N }�qX|| }}�qF|d ? d @ |d!> d"@ B |d#? d$@ B |d> d%@ B }t |t �S )&a� encrypt single block of data using DES, operates on 64-bit integers. this function is essentially the same as :func:`des_encrypt_block`, except that it operates on integers, and will NOT automatically expand 56-bit keys if provided (since there's no way to detect them). :arg key: DES key as 64-bit integer (the parity bits are ignored). :arg input: input block as 64-bit integer :arg salt: optional 24-bit integer used to mutate the base DES algorithm. defaults to ``0`` (no mutation applied). :arg rounds: optional number of rounds of to apply the DES key schedule. defaults to ``1``. :raises TypeError: if any of the provided args are of the wrong type. :raises ValueError: if any of the input blocks are the wrong size, or the salt/rounds values are out of range. :returns: resulting ciphertext as 64-bit integer. r z rounds must be positive integerr z(salt must be 24-bit non-negative integer�intr( r6 r< z)input must be 64-bit non-negative integerNc s s8 t D ].\}}t| |�}t||�} |t@ | t@ fV qdS )zCgiven 64-bit key, iterates over the 8 (even,odd) key schedule pairsN)r r �_KS_MASK)�ks_oddZp_evenZp_odd�ks_evenr r r �_iter_key_schedule s z1des_encrypt_int_block.<locals>._iter_key_schedule�? � i� � i � r i � rU � l �*UU iUUUUr �: �2 �* �" � � � l <<xx�! l �C� �# il �p�a )r2 � INT_24_MASKr/ r r r4 r9 r r r �listr r r )r( r< r> r? ZSPE0ZSPE1ZSPE2ZSPE3ZSPE4ZSPE5ZSPE6ZSPE7rD Zks_list�L�RrC rB �k�B�Cr r r r= � s� " � � �� ������ ������ � � �� r= )r r )r r )!�__doc__�structZpasslibr Zpasslib.utils.compatr r r r �__all__rR r3 r9 Z _KDATA_MASKZ _KPARITY_MASKrA r r r r r r �Structr r r! r" r$ r5 r r8 r r= r r r r �<module> s8 . � k 8