관리-도구
편집 파일: padding.cpython-39.pyc
a �a+ � @ sT d dl Z d dlZd dlmZ d dlmZ d dlmZmZ G dd� de j d�Z e dd�d d �Z ej e ee ejeef d �d d �Zej e e eje gef ed�dd�Zej e ee ejeef d �dd�Zej e e ejege f ed�dd�ZG dd� de�ZG dd� de �ZG dd� de �ZG d d � d e�ZG d d � d e �ZG d d!� d!e �ZdS )"� N)�utils)�AlreadyFinalized)�check_ansix923_padding�check_pkcs7_paddingc @ s6 e Zd Zejeed�dd��Zejed�dd��ZdS )�PaddingContext��data�returnc C s dS )zR Pads the provided bytes and returns any available data as bytes. N� )�selfr r r �L/usr/lib64/python3.9/site-packages/cryptography/hazmat/primitives/padding.py�update s zPaddingContext.update�r c C s dS )z6 Finalize the padding, returns bytes. Nr �r r r r �finalize s zPaddingContext.finalizeN)�__name__� __module__� __qualname__�abc�abstractmethod�bytesr r r r r r r s r )� metaclass)� block_sizer c C s6 d| krdks n t d��| d dkr2t d��d S )Nr i� z%block_size must be in range(0, 2041).� z#block_size must be a multiple of 8.)� ValueError�r r r r �_byte_padding_check s r )�buffer_r r r c C sh | d u rt d��t�d|� | t|�7 } t| �|d }| d ||d � }| ||d d � } | |fS )N� Context was already finalized.r r )r r �_check_bytesliker �len�r r r Zfinished_blocks�resultr r r �_byte_padding_update' s r# )r r � paddingfnr c C s, | d u rt d��|d t| � }| ||� S )Nr r )r r )r r r$ �pad_sizer r r �_byte_padding_pad9 s r& c C sr | d u rt d��t�d|� | t|�7 } tt| �|d d d�}| d ||d � }| ||d d � } | |fS )Nr r r � r )r r r r �maxr r! r r r �_byte_unpadding_updateE s r) )r r �checkfnr c C sR | d u rt d��t| �|d kr(td��|| �}|s<td��| d }| d | � S )Nr r zInvalid padding bytes.���)r r r )r r r* Zvalidr% r r r �_byte_unpadding_checkW s r, c @ s* e Zd Zed�dd�Zdd� Zdd� ZdS ) �PKCS7r c C s t |� || _d S �N�r r �r r r r r �__init__l s zPKCS7.__init__c C s t | j�S r. )�_PKCS7PaddingContextr r r r r �padderp s z PKCS7.padderc C s t | j�S r. )�_PKCS7UnpaddingContextr r r r r �unpadders s zPKCS7.unpadderN)r r r �intr1 r3 r5 r r r r r- k s r- c @ sX e Zd ZU eje ed< ed�dd�Zeed�dd�Z eed�d d �Z ed �d d �Z dS )r2 �_bufferr c C s || _ d| _d S �N� �r r7 r0 r r r r1 z s z _PKCS7PaddingContext.__init__r c C s t | j|| j�\| _}|S r. �r# r7 r �r r r" r r r r s � z_PKCS7PaddingContext.update��sizer c C s t |g�| S r. �r �r r> r r r �_padding� s z _PKCS7PaddingContext._paddingr c C s t | j| j| j�}d | _|S r. �r& r7 r rA �r r" r r r r � s �z _PKCS7PaddingContext.finalizeN� r r r �typing�Optionalr �__annotations__r6 r1 r rA r r r r r r2 w s r2 c @ sH e Zd ZU eje ed< ed�dd�Zeed�dd�Z ed�d d �Z d S ) r4 r7 r c C s || _ d| _d S r8 r: r0 r r r r1 � s z _PKCS7UnpaddingContext.__init__r c C s t | j|| j�\| _}|S r. �r) r7 r r< r r r r � s � z _PKCS7UnpaddingContext.updater c C s t | j| jt�}d | _|S r. )r, r7 r r rC r r r r � s �z _PKCS7UnpaddingContext.finalizeN� r r r rE rF r rG r6 r1 r r r r r r r4 � s r4 c @ s6 e Zd Zed�dd�Zed�dd�Zed�dd�Zd S ) �ANSIX923r c C s t |� || _d S r. r/ r0 r r r r1 � s zANSIX923.__init__r c C s t | j�S r. )�_ANSIX923PaddingContextr r r r r r3 � s zANSIX923.padderc C s t | j�S r. )�_ANSIX923UnpaddingContextr r r r r r5 � s zANSIX923.unpadderN)r r r r6 r1 r r3 r5 r r r r rJ � s rJ c @ sX e Zd ZU eje ed< ed�dd�Zeed�dd�Z eed�d d �Z ed �d d �Z dS )rK r7 r c C s || _ d| _d S r8 r: r0 r r r r1 � s z _ANSIX923PaddingContext.__init__r c C s t | j|| j�\| _}|S r. r; r< r r r r � s � z _ANSIX923PaddingContext.updater= c C s t dg�|d t |g� S )Nr r' r? r@ r r r rA � s z _ANSIX923PaddingContext._paddingr c C s t | j| j| j�}d | _|S r. rB rC r r r r � s �z _ANSIX923PaddingContext.finalizeNrD r r r r rK � s rK c @ sH e Zd ZU eje ed< ed�dd�Zeed�dd�Z ed�d d �Z d S ) rL r7 r c C s || _ d| _d S r8 r: r0 r r r r1 � s z"_ANSIX923UnpaddingContext.__init__r c C s t | j|| j�\| _}|S r. rH r< r r r r � s � z _ANSIX923UnpaddingContext.updater c C s t | j| jt�}d | _|S r. )r, r7 r r rC r r r r � s �z"_ANSIX923UnpaddingContext.finalizeNrI r r r r rL � s rL ) r rE Z cryptographyr Zcryptography.exceptionsr Z"cryptography.hazmat.bindings._rustr r �ABCMetar r6 r rF r �Tupler# �Callabler& r) r, �objectr- r2 r4 rJ rK rL r r r r �<module> s8 � � � �