U
    çe¨]>  ã                   @   sv  d dl mZmZmZ d dlZd dlZd dlmZ d dlm	Z	m
Z
mZ d dlmZ e ej¡G dd„ deƒƒZe ej¡G dd	„ d	eƒƒZe ej¡G d
d„ deƒƒZe e¡G dd„ deƒƒZe e¡G dd„ deƒƒZe e¡G dd„ deƒƒZe e¡G dd„ deƒƒZe e¡G dd„ deƒƒZe e¡G dd„ deƒƒZe e¡G dd„ deƒƒZe e¡G dd„ deƒƒZe e¡G dd„ deƒƒZe e¡G dd„ deƒƒZe e¡G d d!„ d!eƒƒZe e¡G d"d#„ d#eƒƒZ e e¡e e¡G d$d%„ d%eƒƒƒZ!e e¡e e¡G d&d'„ d'eƒƒƒZ"e e¡G d(d)„ d)eƒƒZ#e e¡G d*d+„ d+eƒƒZ$e e¡G d,d-„ d-eƒƒZ%dS ).é    )Úabsolute_importÚdivisionÚprint_functionN)Úutils)ÚAlreadyFinalizedÚUnsupportedAlgorithmÚ_Reasons)ÚHashBackendc                   @   s(   e Zd Zejdd„ ƒZejdd„ ƒZdS )ÚHashAlgorithmc                 C   s   dS )zH
        A string naming this algorithm (e.g. "sha256", "md5").
        N© ©Úselfr   r   úG/usr/lib/python3/dist-packages/cryptography/hazmat/primitives/hashes.pyÚname   s    zHashAlgorithm.namec                 C   s   dS )z<
        The size of the resulting digest in bytes.
        Nr   r   r   r   r   Údigest_size   s    zHashAlgorithm.digest_sizeN)Ú__name__Ú
__module__Ú__qualname__ÚabcÚabstractpropertyr   r   r   r   r   r   r
      s   
r
   c                   @   sD   e Zd Zejdd„ ƒZejdd„ ƒZejdd„ ƒZejdd„ ƒZ	d	S )
ÚHashContextc                 C   s   dS )zD
        A HashAlgorithm that will be used by this context.
        Nr   r   r   r   r   Ú	algorithm#   s    zHashContext.algorithmc                 C   s   dS )z@
        Processes the provided bytes through the hash.
        Nr   ©r   Údatar   r   r   Úupdate)   s    zHashContext.updatec                 C   s   dS )zR
        Finalizes the hash context and returns the hash digest as bytes.
        Nr   r   r   r   r   Úfinalize/   s    zHashContext.finalizec                 C   s   dS )zM
        Return a HashContext that is a copy of the current context.
        Nr   r   r   r   r   Úcopy5   s    zHashContext.copyN)
r   r   r   r   r   r   Úabstractmethodr   r   r   r   r   r   r   r   !   s   


r   c                   @   s   e Zd ZdZdS )ÚExtendableOutputFunctionz7
    An interface for extendable output functions.
    N)r   r   r   Ú__doc__r   r   r   r   r   <   s   r   c                   @   s8   e Zd Zddd„Ze d¡Zdd„ Zdd„ Zd	d
„ Z	dS )ÚHashNc                 C   sX   t |tƒstdtjƒ‚t |tƒs(tdƒ‚|| _|| _|d krN| j 	| j
¡| _n|| _d S )Nz.Backend object does not implement HashBackend.z*Expected instance of hashes.HashAlgorithm.)Ú
isinstancer	   r   r   ZBACKEND_MISSING_INTERFACEr
   Ú	TypeErrorÚ
_algorithmÚ_backendZcreate_hash_ctxr   Ú_ctx)r   r   ÚbackendÚctxr   r   r   Ú__init__E   s    
þ
zHash.__init__r#   c                 C   s.   | j d krtdƒ‚t d|¡ | j  |¡ d S )NúContext was already finalized.r   )r%   r   r   Z_check_bytesliker   r   r   r   r   r   Y   s    
zHash.updatec                 C   s*   | j d krtdƒ‚t| j| j| j  ¡ dS )Nr)   )r&   r'   )r%   r   r    r   r$   r   r   r   r   r   r   _   s    
  ÿz	Hash.copyc                 C   s&   | j d krtdƒ‚| j  ¡ }d | _ |S )Nr)   )r%   r   r   )r   Zdigestr   r   r   r   f   s
    

zHash.finalize)N)
r   r   r   r(   r   Úread_only_propertyr   r   r   r   r   r   r   r   r    C   s
   

r    c                   @   s   e Zd ZdZdZdZdS )ÚSHA1Zsha1é   é@   N©r   r   r   r   r   Ú
block_sizer   r   r   r   r+   n   s   r+   c                   @   s   e Zd ZdZdZdZdS )Ú
SHA512_224z
sha512-224é   é€   Nr.   r   r   r   r   r0   u   s   r0   c                   @   s   e Zd ZdZdZdZdS )Ú
SHA512_256z
sha512-256é    r2   Nr.   r   r   r   r   r3   |   s   r3   c                   @   s   e Zd ZdZdZdZdS )ÚSHA224Zsha224r1   r-   Nr.   r   r   r   r   r5   ƒ   s   r5   c                   @   s   e Zd ZdZdZdZdS )ÚSHA256Zsha256r4   r-   Nr.   r   r   r   r   r6   Š   s   r6   c                   @   s   e Zd ZdZdZdZdS )ÚSHA384Zsha384é0   r2   Nr.   r   r   r   r   r7   ‘   s   r7   c                   @   s   e Zd ZdZdZdZdS )ÚSHA512Zsha512r-   r2   Nr.   r   r   r   r   r9   ˜   s   r9   c                   @   s   e Zd ZdZdZdS )ÚSHA3_224zsha3-224r1   N©r   r   r   r   r   r   r   r   r   r:   Ÿ   s   r:   c                   @   s   e Zd ZdZdZdS )ÚSHA3_256zsha3-256r4   Nr;   r   r   r   r   r<   ¥   s   r<   c                   @   s   e Zd ZdZdZdS )ÚSHA3_384zsha3-384r8   Nr;   r   r   r   r   r=   «   s   r=   c                   @   s   e Zd ZdZdZdS )ÚSHA3_512zsha3-512r-   Nr;   r   r   r   r   r>   ±   s   r>   c                   @   s"   e Zd ZdZdd„ Ze d¡ZdS )ÚSHAKE128Zshake128c                 C   s.   t |tjƒstdƒ‚|dk r$tdƒ‚|| _d S ©Nzdigest_size must be an integeré   z&digest_size must be a positive integer©r!   ÚsixZinteger_typesr"   Ú
ValueErrorÚ_digest_size©r   r   r   r   r   r(   ¼   s
    zSHAKE128.__init__rE   N©r   r   r   r   r(   r   r*   r   r   r   r   r   r?   ·   s   	r?   c                   @   s"   e Zd ZdZdd„ Ze d¡ZdS )ÚSHAKE256Zshake256c                 C   s.   t |tjƒstdƒ‚|dk r$tdƒ‚|| _d S r@   rB   rF   r   r   r   r(   Í   s
    zSHAKE256.__init__rE   NrG   r   r   r   r   rH   È   s   	rH   c                   @   s   e Zd ZdZdZdZdS )ÚMD5Zmd5é   r-   Nr.   r   r   r   r   rI   Ù   s   rI   c                   @   s.   e Zd ZdZdZdZdZdd„ Ze 	d¡Z
dS )	ÚBLAKE2bZblake2br-   rA   r2   c                 C   s   |dkrt dƒ‚|| _d S )Nr-   zDigest size must be 64©rD   rE   rF   r   r   r   r(   ç   s    zBLAKE2b.__init__rE   N)r   r   r   r   Ú_max_digest_sizeÚ_min_digest_sizer/   r(   r   r*   r   r   r   r   r   rK   à   s   rK   c                   @   s.   e Zd ZdZdZdZdZdd„ Ze 	d¡Z
dS )	ÚBLAKE2sZblake2sr-   r4   rA   c                 C   s   |dkrt dƒ‚|| _d S )Nr4   zDigest size must be 32rL   rF   r   r   r   r(   ø   s    zBLAKE2s.__init__rE   N)r   r   r   r   r/   rM   rN   r(   r   r*   r   r   r   r   r   rO   ñ   s   rO   )&Z
__future__r   r   r   r   rC   Zcryptographyr   Zcryptography.exceptionsr   r   r   Z'cryptography.hazmat.backends.interfacesr	   Zadd_metaclassÚABCMetaÚobjectr
   r   r   Zregister_interfacer    r+   r0   r3   r5   r6   r7   r9   r:   r<   r=   r>   r?   rH   rI   rK   rO   r   r   r   r   Ú<module>   s^   


*