File: //opt/alt/python37/lib/python3.7/site-packages/dns/__pycache__/entropy.cpython-37.pyc
B
��f� � @ s� U d dl mZmZ d dlZd dlZd dlZd dlZd dlZG dd� d�Ze� Z ee e
d< y e� � Z W n e
k
r~ dZ Y nX ed�dd�Zeeed �d
d �ZdS ) � )�Any�OptionalNc @ s� e Zd Zdee d�dd�Zedd�dd�Zedd�dd �Zdd
�d d �Ze d
�d
d�Z
e d
�dd�Z e d
�dd�Z e e e d�dd�Z
dS )� EntropyPoolN)�seedc C sp d| _ d | _d| _t�� | _t�� | _d| _ t
d| j �| _ |d k r`| � |� d| _
t�� | _n d| _
d| _d S )Nr � � TF)�
pool_index�digest� next_byte� threading�Lock�lock�hashlib�sha1�hash�hash_len� bytearray�pool�_stir�seeded�os�getpid�seed_pid)�selfr � r �</opt/alt/python37/lib/python3.7/site-packages/dns/entropy.py�__init__" s
zEntropyPool.__init__)�entropy�returnc C sN xH|D ]@}| j | jkr d| _ |d@ }| j| j |N < | j d7 _ qW d S )Nr � � )r r r )r r �c�br r r r 2 s
zEntropyPool._stirc C s | j � | �|� W d Q R X d S )N)r
r )r r r r r �stir: s zEntropyPool.stir)r c C s� | j r| jt�� kr�yt�d�}W n` tk
r� y&tddd��}|�d�}W d Q R X W n$ tk
r| tt � � ��
� }Y nX Y nX d| _ t�� | _d | _ t |�}| �
|� d S )N� z /dev/urandom�rbr T)r r r r �urandom� Exception�open�read�str�time�encoder r r )r r �rr r r � _maybe_seed> s
zEntropyPool._maybe_seedc C s� | j �r | �� | jd ks&| j| jkrZ| j�t| j�� t | j�� �| _| �
| j� d| _| j| j }| jd7 _W d Q R X |S )Nr r ) r
r. r r
r r �update�bytesr r r )r �valuer r r �random_8N s zEntropyPool.random_8c C s | � � d | � � S )N� )r2 )r r r r � random_16Z s zEntropyPool.random_16c C s | � � d | � � S )Ni )r4 )r r r r � random_32] s zEntropyPool.random_32)�first�lastr c C sd || d }|dkr t d��|dkr0| j}d}n |dkrD| j}d}n
| j}d}|||� |d S ) Nr l ztoo bigi l �� r3 i�� r )�
ValueErrorr5 r4 r2 )r r6 r7 �sizeZrand�maxr r r �random_between` s zEntropyPool.random_between)N)�__name__�
__module__� __qualname__r r0 r r r# r. �intr2 r4 r5 r; r r r r r s r �
system_random)r c C s t d k rt �dd�S t�� S d S )Nr i )r@ � randranger r4 r r r r r4 y s r4 )r6 r7 r c C s( t d k rt �| |d �S t�| |�S d S )Nr )r@ rA r r; )r6 r7 r r r �between� s rB )�typingr r r r �randomr r+ r r �__annotations__� SystemRandomr@ r' r? r4 rB r r r r �<module> s U