o
    
c?                  
   @   sj  d dl Z d dlZd dlmZ d dlmZ d dlmZmZ G dd de j	dZ
ded	dfd
dZdeje deded	ejeef fddZdeje dedejegef d	efddZdeje deded	ejeef fddZdeje dedejegef d	efddZG dd dZG dd de
ZG dd de
ZG dd dZG d d! d!e
ZG d"d# d#e
ZdS )$    N)utils)AlreadyFinalized)check_ansix923_paddingcheck_pkcs7_paddingc                   @   s8   e Zd ZejdedefddZejdefddZdS )PaddingContextdatareturnc                 C      dS )zR
        Pads the provided bytes and returns any available data as bytes.
        N )selfr   r
   r
   S/opt/certbot/lib/python3.10/site-packages/cryptography/hazmat/primitives/padding.pyupdate       zPaddingContext.updatec                 C   r	   )z6
        Finalize the padding, returns bytes.
        Nr
   r   r
   r
   r   finalize   r   zPaddingContext.finalizeN)__name__
__module____qualname__abcabstractmethodbytesr   r   r
   r
   r
   r   r      s
    r   )	metaclass
block_sizer   c                 C   s<   d|   krdkst d t d| d dkrt dd S )Nr   i  z%block_size must be in range(0, 2041).   z#block_size must be a multiple of 8.)
ValueError)r   r
   r
   r   _byte_padding_check   s   r   buffer_r   c                 C   sh   | d u rt dtd| | t|7 } t| |d  }| d ||d   }| ||d  d  } | |fS )NContext was already finalized.r   r   )r   r   _check_bytesliker   lenr   r   r   finished_blocksresultr
   r
   r   _byte_padding_update'   s   r#   	paddingfnc                 C   s,   | d u rt d|d t|  }| || S )Nr   r   )r   r   )r   r   r$   pad_sizer
   r
   r   _byte_padding_pad9   s   r&   c                 C   sr   | d u rt dtd| | t|7 } tt| |d  d d}| d ||d   }| ||d  d  } | |fS )Nr   r   r      r   )r   r   r   r   maxr   r    r
   r
   r   _byte_unpadding_updateE   s   r)   checkfnc                 C   sR   | d u rt dt| |d krtd|| }|std| d }| d |  S )Nr   r   zInvalid padding bytes.)r   r   r   )r   r   r*   validr%   r
   r
   r   _byte_unpadding_checkW   s   r-   c                   @   6   e Zd ZdefddZdefddZdefddZd	S )
PKCS7r   c                 C      t | || _d S Nr   r   r   r   r
   r
   r   __init__l      
zPKCS7.__init__r   c                 C   
   t | jS r1   )_PKCS7PaddingContextr   r   r
   r
   r   padderp      
zPKCS7.padderc                 C   r6   r1   )_PKCS7UnpaddingContextr   r   r
   r
   r   unpadders   r9   zPKCS7.unpadderNr   r   r   intr4   r   r8   r;   r
   r
   r
   r   r/   k       r/   c                   @   \   e Zd ZU eje ed< defddZdedefddZ	d	edefd
dZ
defddZdS )r7   _bufferr   c                 C      || _ d| _d S N    r   r@   r3   r
   r
   r   r4   z      
z_PKCS7PaddingContext.__init__r   r   c                 C      t | j|| j\| _}|S r1   r#   r@   r   r   r   r"   r
   r
   r   r         

z_PKCS7PaddingContext.updatesizec                 C   s   t |g| S r1   r   r   rJ   r
   r
   r   _padding   s   z_PKCS7PaddingContext._paddingc                 C      t | j| j| j}d | _|S r1   r&   r@   r   rM   r   r"   r
   r
   r   r      
   z_PKCS7PaddingContext.finalizeNr   r   r   typingOptionalr   __annotations__r=   r4   r   rM   r   r
   r
   r
   r   r7   w      
 r7   c                   @   J   e Zd ZU eje ed< defddZdedefddZ	defd	d
Z
dS )r:   r@   r   c                 C   rA   rB   rD   r3   r
   r
   r   r4      rE   z_PKCS7UnpaddingContext.__init__r   r   c                 C   rF   r1   r)   r@   r   rH   r
   r
   r   r      rI   z_PKCS7UnpaddingContext.updatec                 C      t | j| jt}d | _|S r1   )r-   r@   r   r   rP   r
   r
   r   r      s
   
z_PKCS7UnpaddingContext.finalizeNr   r   r   rS   rT   r   rU   r=   r4   r   r   r
   r
   r
   r   r:      
   
 r:   c                   @   r.   )
ANSIX923r   c                 C   r0   r1   r2   r3   r
   r
   r   r4      r5   zANSIX923.__init__r   c                 C   r6   r1   )_ANSIX923PaddingContextr   r   r
   r
   r   r8      r9   zANSIX923.padderc                 C   r6   r1   )_ANSIX923UnpaddingContextr   r   r
   r
   r   r;      r9   zANSIX923.unpadderNr<   r
   r
   r
   r   r\      r>   r\   c                   @   r?   )r]   r@   r   c                 C   rA   rB   rD   r3   r
   r
   r   r4      rE   z _ANSIX923PaddingContext.__init__r   r   c                 C   rF   r1   rG   rH   r
   r
   r   r      rI   z_ANSIX923PaddingContext.updaterJ   c                 C   s   t dg|d  t |g S )Nr   r'   rK   rL   r
   r
   r   rM      s   z _ANSIX923PaddingContext._paddingc                 C   rN   r1   rO   rP   r
   r
   r   r      rQ   z _ANSIX923PaddingContext.finalizeNrR   r
   r
   r
   r   r]      rV   r]   c                   @   rW   )r^   r@   r   c                 C   rA   rB   rD   r3   r
   r
   r   r4      rE   z"_ANSIX923UnpaddingContext.__init__r   r   c                 C   rF   r1   rX   rH   r
   r
   r   r      rI   z _ANSIX923UnpaddingContext.updatec                 C   rY   r1   )r-   r@   r   r   rP   r
   r
   r   r      s   z"_ANSIX923UnpaddingContext.finalizeNrZ   r
   r
   r
   r   r^      r[   r^   )r   rS   cryptographyr   cryptography.exceptionsr   "cryptography.hazmat.bindings._rustr   r   ABCMetar   r=   r   rT   r   Tupler#   Callabler&   r)   r-   r/   r7   r:   r\   r]   r^   r
   r
   r
   r   <module>   sb   



