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U �e�]> � @ sv d dl mZmZmZ d dlZd dlZd dlmZ d dlm Z m Z m Z d dl m Z e�ej�G dd� de��Ze�ej�G dd � d e��Ze�ej�G d d � d e��Ze�e�G d d � d e��Ze�e�G dd� de��Ze�e�G dd� de��Ze�e�G dd� de��Ze�e�G dd� de��Ze�e�G dd� de��Ze�e�G dd� de��Ze�e�G dd� de��Z e�e�G d d � d e��Z e�e�G d d � d e��Z e�e�G d d!� d!e��Z e�e�G d"d#� d#e��Z e�e�e�e�G d$d%� d%e���Z!e�e�e�e�G d&d'� d'e���Z"e�e�G d(d)� d)e��Z#e�e�G d*d+� d+e��Z$e�e�G d,d-� d-e��Z%dS ).� )�absolute_import�division�print_functionN)�utils)�AlreadyFinalized�UnsupportedAlgorithm�_Reasons)� HashBackendc @ s( e Zd Zejdd� �Zejdd� �ZdS )� HashAlgorithmc C s dS )zH A string naming this algorithm (e.g. "sha256", "md5"). N� ��selfr r �G/usr/lib/python3/dist-packages/cryptography/hazmat/primitives/hashes.py�name s zHashAlgorithm.namec C s dS )z< The size of the resulting digest in bytes. Nr r r r r � digest_size s zHashAlgorithm.digest_sizeN)�__name__� __module__� __qualname__�abc�abstractpropertyr r r r r r r s r c @ sD e Zd Zejdd� �Zejdd� �Zejdd� �Zejdd� �Z d S ) � HashContextc C s dS )zD A HashAlgorithm that will be used by this context. Nr r r r r � algorithm# s zHashContext.algorithmc C s dS )z@ Processes the provided bytes through the hash. Nr �r �datar r r �update) s zHashContext.updatec C s dS )zR Finalizes the hash context and returns the hash digest as bytes. Nr r r r r �finalize/ s zHashContext.finalizec C s dS )zM Return a HashContext that is a copy of the current context. Nr r r r r �copy5 s zHashContext.copyN) r r r r r r �abstractmethodr r r r r r r r ! s r c @ s e Zd ZdZdS )�ExtendableOutputFunctionz7 An interface for extendable output functions. N)r r r �__doc__r r r r r < s r c @ s8 e Zd Zd dd�Ze�d�Zdd� Zdd� Zd d � Z dS ) �HashNc C sX t |t�stdtj��t |t�s(td��|| _|| _|d krN| j� | j �| _ n|| _ d S )Nz.Backend object does not implement HashBackend.z*Expected instance of hashes.HashAlgorithm.) � isinstancer r r ZBACKEND_MISSING_INTERFACEr � TypeError� _algorithm�_backendZcreate_hash_ctxr �_ctx)r r �backend�ctxr r r �__init__E s � z Hash.__init__r# c C s. | j d krtd��t�d|� | j �|� d S )N� 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 krtd��t| j| j| j �� d�S )Nr) )r& r' )r% r r r r$ r r r r r r _ s �z Hash.copyc C s& | j d krtd��| j �� }d | _ |S )Nr) )r% r r )r Zdigestr r r r f s z Hash.finalize)N) r r r r( r �read_only_propertyr r r r r r r r r C s r c @ s e Zd ZdZdZdZdS )�SHA1Zsha1� �@ N�r r r r r � block_sizer r r r r+ n s r+ c @ s e Zd ZdZdZdZdS )� SHA512_224z sha512-224� � Nr. r r r r r0 u s r0 c @ s e Zd ZdZdZdZdS )� SHA512_256z sha512-256� r2 Nr. r r r r r3 | s r3 c @ s e Zd ZdZdZdZdS )�SHA224Zsha224r1 r- Nr. r r r r r5 � s r5 c @ s e Zd ZdZdZdZdS )�SHA256Zsha256r4 r- Nr. r r r r r6 � s r6 c @ s e Zd ZdZdZdZdS )�SHA384Zsha384�0 r2 Nr. r r r r r7 � s r7 c @ s e Zd ZdZdZdZdS )�SHA512Zsha512r- r2 Nr. r r r r r9 � s r9 c @ s e Zd ZdZdZdS )�SHA3_224zsha3-224r1 N�r r r r r r r r r r: � s r: c @ s e Zd ZdZdZdS )�SHA3_256zsha3-256r4 Nr; r r r r r< � s r< c @ s e Zd ZdZdZdS )�SHA3_384zsha3-384r8 Nr; r r r r r= � s r= c @ s e Zd ZdZdZdS )�SHA3_512zsha3-512r- Nr; r r r r r> � s r> c @ s" e Zd ZdZdd� Ze�d�ZdS )�SHAKE128Zshake128c C s. t |tj�std��|dk r$td��|| _d S �Nz digest_size must be an integer� z&digest_size must be a positive integer�r! �sixZ integer_typesr" � ValueError� _digest_size�r r r r r r( � s zSHAKE128.__init__rE N�r r r r r( r r* r r r r r r? � s r? c @ s" e Zd ZdZdd� Ze�d�ZdS )�SHAKE256Zshake256c C s. t |tj�std��|dk r$td��|| _d S r@ rB rF r r r r( � s zSHAKE256.__init__rE NrG r r r r rH � s rH c @ s e Zd ZdZdZdZdS )�MD5Zmd5� r- Nr. r r r r rI � s rI c @ s. e Zd ZdZdZdZdZdd� Ze� d�Z dS ) �BLAKE2bZblake2br- rA r2 c C s |dkrt d��|| _d S )Nr- zDigest size must be 64�rD rE rF r r r r( � s zBLAKE2b.__init__rE N) r r r r �_max_digest_size�_min_digest_sizer/ r( r r* r r r r r rK � s rK c @ s. e Zd ZdZdZdZdZdd� Ze� d�Z dS ) �BLAKE2sZblake2sr- r4 rA c C s |dkrt d��|| _d S )Nr4 zDigest size must be 32rL rF r r r r( � s zBLAKE2s.__init__rE N) r r r r r/ rM rN r( r r* r r r r r rO � s rO )&Z __future__r r r r rC Z cryptographyr Zcryptography.exceptionsr r r Z'cryptography.hazmat.backends.interfacesr Z add_metaclass�ABCMeta�objectr r r Zregister_interfacer r+ r0 r3 r5 r6 r7 r9 r: r< r= r> r? rH rI rK rO r r r r �<module> s^ *
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