o
    -&%aC  ã                   @   sŽ   d dl Z d dlmZ d dlmZ d dlmZ G dd„ deƒZG dd„ deƒZG d	d
„ d
eƒZ	G dd„ de
ƒZde jd dejdefdd„ZdS )é    N)Úhashes)ÚAsymmetricPadding)Úrsac                   @   s   e Zd ZdZdS )ÚPKCS1v15zEMSA-PKCS1-v1_5N)Ú__name__Ú
__module__Ú__qualname__Úname© r
   r
   úS/usr/lib/python3/dist-packages/cryptography/hazmat/primitives/asymmetric/padding.pyr      s    r   c                   @   s   e Zd Zeƒ ZdZdd„ ZdS )ÚPSSzEMSA-PSSc                 C   sF   || _ t|tƒs|| jurtdƒ‚|| jur|dk rtdƒ‚|| _d S )Nzsalt_length must be an integer.r   z$salt_length must be zero or greater.)Ú_mgfÚ
isinstanceÚintÚ
MAX_LENGTHÚ	TypeErrorÚ
ValueErrorÚ_salt_length)ÚselfÚmgfÚsalt_lengthr
   r
   r   Ú__init__   s   ÿ

zPSS.__init__N)r   r   r   Úobjectr   r	   r   r
   r
   r
   r   r      s    r   c                   @   s.   e Zd ZdZdddejdeje fdd„Z	dS )	ÚOAEPzEME-OAEPr   ÚMGF1Ú	algorithmÚlabelc                 C   s*   t |tjƒs
tdƒ‚|| _|| _|| _d S ©Nz*Expected instance of hashes.HashAlgorithm.)r   r   ÚHashAlgorithmr   r   Ú
_algorithmÚ_label)r   r   r   r   r
   r
   r   r   '   s
   
zOAEP.__init__N)
r   r   r   r	   r   r   ÚtypingÚOptionalÚbytesr   r
   r
   r
   r   r   $   s    þýür   c                   @   s"   e Zd Zeƒ Zdejfdd„ZdS )r   r   c                 C   s   t |tjƒs
tdƒ‚|| _d S r   )r   r   r   r   r   )r   r   r
   r
   r   r   8   s   
zMGF1.__init__N)r   r   r   r   r   r   r   r   r
   r
   r
   r   r   5   s    r   Úkey)zrsa.RSAPrivateKeyzrsa.RSAPublicKeyÚhash_algorithmÚreturnc                 C   sF   t | tjtjfƒstdƒ‚| jd d }||j d }|dks!J ‚|S )Nz(key must be an RSA public or private keyé   é   é   r   )r   r   ÚRSAPrivateKeyÚRSAPublicKeyr   Úkey_sizeÚdigest_size)r$   r%   Úemlenr   r
   r
   r   Úcalculate_max_pss_salt_length?   s   r/   )r!   Úcryptography.hazmat.primitivesr   Ú*cryptography.hazmat.primitives._asymmetricr   Ú)cryptography.hazmat.primitives.asymmetricr   r   r   r   r   r   ÚUnionr   r   r/   r
   r
   r
   r   Ú<module>   s   
ÿþý