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o ;j~ � @ sv g d �Z ddlmZ ddlmZ G dd� de�Ze� ZejZej Z ej Z ej Z ej Z ej Z ddlmZmZmZmZ dS ))� StrongRandom� getrandbits� randrange�randint�choice�shuffle�sample� )�Random)� is_native_intc @ sF e Zd Zddd�Zdd� Zdd� Zdd � Zd d � Zd d � Zdd� Z dS )r Nc C sX |d u r |d u r d | _ d S |d ur|d u r|| _ d S |d u r(|d ur(|j| _ d S td��)Nz(Cannot specify both 'rng' and 'randfunc')� _randfunc�read� ValueError)�self�rngZrandfunc� r �L/opt/saltstack/salt/lib/python3.10/site-packages/Cryptodome/Random/random.py�__init__ s zStrongRandom.__init__c C s: | j du r t�� j| _ d|> d }|t| � t|d���@ S )z%Return an integer with k random bits.N� � )r r �newr � bytes_to_long�ceil_div)r �k�maskr r r r * s zStrongRandom.getrandbitsc G s� t |�dkr |\}}}n$t |�dkr|\}}d}nt |�dkr'|\}d}d}n tdt |�f ��t|�r<t|�r<t|�s@td��|dkrHtd��t|| |�}|dk rUd}|dk rbtd|||f ��|}||krs| �t|��}||ksh||| S ) zkrandrange([start,] stop[, step]): Return a randomly-selected element from range(start, stop, step).� � r r z.randrange expected at most 3 arguments, got %dz$randrange requires integer argumentsz(randrange step argument must not be zeroz%empty range for randrange(%r, %r, %r))�len� TypeErrorr r r r �size)r �args�start�stop�step� num_choices�rr r r r 2 s4 �� zStrongRandom.randrangec C sH t |�rt |�s td��| �||d �}|| kr |ks"J � J �|S )z0Return a random integer N such that a <= N <= b.z"randint requires integer argumentsr )r r r )r �a�b�Nr r r r S s zStrongRandom.randintc C s& t |�dkr td��|| �t |�� S )zrReturn a random element from a (non-empty) sequence. If the seqence is empty, raises IndexError. r zempty sequence)r � IndexErrorr )r �seqr r r r [ s zStrongRandom.choicec C sH t t|�d dd�D ]}| �d|d �}|| || ||< ||< q dS )z Shuffle the sequence in place.r r ���N)�ranger r )r �x�i�jr r r r d s �zStrongRandom.shufflec C sv t |�}||kr td��g }i }t|�D ]$}d}|du s ||v r-| �|�}|du s ||v s |�|| � d||< q|S )zNReturn a k-length list of unique elements chosen from the population sequence.z sample larger than populationNr )r r r+ r �append)r � populationr r# �retval�selectedr- r$ r r r r n s � zStrongRandom.sample)NN) �__name__� __module__� __qualname__r r r r r r r r r r r r s ! r )r r � long_to_bytesr N)�__all__Z Cryptodomer ZCryptodome.Util.py3compatr �objectr Z_rr r r r r r ZCryptodome.Util.numberr r r6 r r r r r �<module> s `
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