o
    
þðc-  ã                   @   sF   d dl Z d dlmZ d dlmZmZmZ d dlmZ G dd„ dƒZ	dS )é    N)Úutils)ÚAlreadyFinalizedÚUnsupportedAlgorithmÚ_Reasons)Ú_Poly1305Contextc                	   @   s”   e Zd ZU eje ed< defdd„Zdeddfdd	„Z	defd
d„Z
deddfdd„Zedededefdd„ƒZededededdfdd„ƒZdS )ÚPoly1305Ú_ctxÚkeyc                 C   s0   ddl m} | ¡ stdtjƒ‚| |¡| _d S )Nr   )Úbackendz5poly1305 is not supported by this version of OpenSSL.)Ú,cryptography.hazmat.backends.openssl.backendr
   Úpoly1305_supportedr   r   ÚUNSUPPORTED_MACÚcreate_poly1305_ctxr   )Úselfr	   r
   © r   úT/opt/certbot/lib/python3.10/site-packages/cryptography/hazmat/primitives/poly1305.pyÚ__init__   s   þzPoly1305.__init__ÚdataÚreturnNc                 C   s.   | j d u r	tdƒ‚t d|¡ | j  |¡ d S )NúContext was already finalized.r   )r   r   r   Ú_check_byteslikeÚupdate)r   r   r   r   r   r      s   
zPoly1305.updatec                 C   s&   | j d u r	tdƒ‚| j  ¡ }d | _ |S )Nr   )r   r   Úfinalize)r   Úmacr   r   r   r   #   s
   

zPoly1305.finalizeÚtagc                 C   s:   t  d|¡ | jd u rtdƒ‚| jd }| _| |¡ d S )Nr   r   )r   Ú_check_bytesr   r   Úverify)r   r   Úctxr   r   r   r   *   s
   
zPoly1305.verifyc                 C   s   t |ƒ}| |¡ | ¡ S ©N)r   r   r   )Úclsr	   r   Úpr   r   r   Úgenerate_tag2   s   
zPoly1305.generate_tagc                 C   s    t |ƒ}| |¡ | |¡ d S r   )r   r   r   )r   r	   r   r   r    r   r   r   Ú
verify_tag8   s   
zPoly1305.verify_tag)Ú__name__Ú
__module__Ú__qualname__ÚtypingÚOptionalr   Ú__annotations__Úbytesr   r   r   r   Úclassmethodr!   r"   r   r   r   r   r      s   
 
 r   )
r&   Úcryptographyr   Úcryptography.exceptionsr   r   r   Ú-cryptography.hazmat.backends.openssl.poly1305r   r   r   r   r   r   Ú<module>   s
   