3
XJ                 @   s   d dl mZmZmZ d dlZd dlZd dlmZ ej	j
Zej	jZej	jZej	jZej	jZej	jZej	jZej	jZej	jZej	jZej	jZej	j Z!G dd de"Z#dddZ$dS )    )absolute_importdivisionprint_functionN)bytes_as_stringc               @   sx   e Zd ZdZeZeZeZ	e
ZdedddfddZedd Zedd Zed	d
 Zdd Zdd Zdd Zdd ZdS )blake2bzK
    :py:mod:`hashlib` API compatible blake2b algorithm implementation
        c             C   s*   t ||||d| _|| _|r&| j| dS )ac  
        :py:class:`.blake2b` algorithm initializer

        :param data:
        :type data: bytes
        :param int digest_size: the requested digest size; must be
                                at most :py:attr:`.MAX_DIGEST_SIZE`;
                                the default digest size is :py:data:`.BYTES`
        :param key: the key to be set for keyed MAC/PRF usage; if set,
                    the key must be at most :py:data:`.KEYBYTES_MAX` long
        :type key: bytes
        :param salt: an initialization salt at most
                     :py:attr:`.SALT_SIZE` long; it will be zero-padded
                     if needed
        :type salt: bytes
        :param person: a personalization string at most
                       :py:attr:`.PERSONAL_SIZE` long; it will be zero-padded
                       if needed
        :type person: bytes
        )keysaltpersondigest_sizeN)	_b2b_init_state_digest_sizeupdate)selfdatar   r   r	   r
    r   ./usr/lib/python3/dist-packages/nacl/hashlib.py__init__/   s
    
zblake2b.__init__c             C   s   | j S )N)r   )r   r   r   r   r   M   s    zblake2b.digest_sizec             C   s   dS )N   r   )r   r   r   r   
block_sizeQ   s    zblake2b.block_sizec             C   s   dS )Nr   r   )r   r   r   r   nameU   s    zblake2b.namec             C   s   t | j| d S )N)_b2b_updater   )r   r   r   r   r   r   Y   s    zblake2b.updatec             C   s   t jj| j}t|| jS )N)naclbindings%crypto_generichash_blake2b_state_copyr   
_b2b_finalr   )r   _str   r   r   digest\   s    zblake2b.digestc             C   s   t tj| j S )N)r   binasciiZhexlifyr   )r   r   r   r   	hexdigest`   s    zblake2b.hexdigestc             C   s$   t | | jd}t| j}||_|S )N)r   )typer   	_b2b_copyr   )r   Z_cpr   r   r   r   copyc   s    
zblake2b.copyN)__name__
__module____qualname____doc__BYTESZMAX_DIGEST_SIZEKEYBYTES_MAXZMAX_KEY_SIZEPERSONALBYTESZPERSON_SIZE	SALTBYTESZ	SALT_SIZEr   propertyr   r   r   r   r   r    r#   r   r   r   r   r   &   s   r                   @   c          	   C   s   t jj| ||||||dS )z
    Derive a cryptographic key using the scrypt KDF.

    Implements the same signature as the ``hashlib.scrypt`` implemented
    in cpython version 3.6
    )maxmemdklen)r   r   Z%crypto_pwhash_scryptsalsa208sha256_ll)Zpasswordr	   nrpr4   r5   r   r   r   scryptj   s    r9         )r-   r:   r0   r1   r;   r3   )%Z
__future__r   r   r   r   Znacl.bindingsr   Z
nacl.utilsr   r   Zcrypto_generichash_BYTESr(   Zcrypto_generichash_BYTES_MINZ	BYTES_MINZcrypto_generichash_BYTES_MAXZ	BYTES_MAXZcrypto_generichash_KEYBYTESZKEYBYTESZcrypto_generichash_KEYBYTES_MINZKEYBYTES_MINZcrypto_generichash_KEYBYTES_MAXr)   Zcrypto_generichash_SALTBYTESr+   Z crypto_generichash_PERSONALBYTESr*   Zcrypto_generichash_blake2b_initr   Z crypto_generichash_blake2b_finalr   r   r"   Z!crypto_generichash_blake2b_updater   objectr   r9   r   r   r   r   <module>   s$   D 