o
    þÑÐbg  ã                   @   st   d dl Z d dlmZmZ d dlmZ d dlmZmZ d dl	m
Z
 d dlmZ d dlmZmZmZ G dd	„ d	eƒZdS )
é    N)ÚUnsupportedAlgorithmÚ_Reasons)Ú_get_backend)ÚBackendÚHMACBackend)Úconstant_time)ÚInvalidToken)ÚHOTPÚ_ALLOWED_HASH_TYPESÚ_generate_uric                   @   sˆ   e Zd Z		ddededededeje de	fd	d
„Z
dejeef defdd„Zdededdfdd„Zdedeje defdd„ZdS )ÚTOTPNTÚkeyÚlengthÚ	algorithmÚ	time_stepÚbackendÚenforce_key_lengthc                 C   s:   t |ƒ}t|tƒstdtjƒ‚|| _t|||||ƒ| _d S )Nz.Backend object does not implement HMACBackend.)	r   Ú
isinstancer   r   r   ZBACKEND_MISSING_INTERFACEÚ
_time_stepr	   Ú_hotp)Úselfr   r   r   r   r   r   © r   úl/var/www/secure340b-portal/env/lib/python3.10/site-packages/cryptography/hazmat/primitives/twofactor/totp.pyÚ__init__   s   	
þzTOTP.__init__ÚtimeÚreturnc                 C   s   t || j ƒ}| j |¡S )N)Úintr   r   Úgenerate)r   r   Úcounterr   r   r   r   '   s   zTOTP.generateÚtotpc                 C   s   t  |  |¡|¡stdƒ‚d S )Nz#Supplied TOTP value does not match.)r   Zbytes_eqr   r   )r   r   r   r   r   r   Úverify+   s   ÿzTOTP.verifyÚaccount_nameÚissuerc                 C   s   t | jd||dt| jƒfgƒS )Nr   Zperiod)r   r   r   r   )r   r!   r"   r   r   r   Úget_provisioning_uri/   s   ûzTOTP.get_provisioning_uri)NT)Ú__name__Ú
__module__Ú__qualname__Úbytesr   r
   ÚtypingÚOptionalr   Úboolr   ÚUnionÚfloatr   r    Ústrr#   r   r   r   r   r      s2    ùþýüûú
ùÿÿþr   )r(   Zcryptography.exceptionsr   r   Zcryptography.hazmat.backendsr   Z'cryptography.hazmat.backends.interfacesr   r   Zcryptography.hazmat.primitivesr   Z(cryptography.hazmat.primitives.twofactorr   Z-cryptography.hazmat.primitives.twofactor.hotpr	   r
   r   Úobjectr   r   r   r   r   Ú<module>   s   