File: //var/opt/nydus/ops/cryptography/hazmat/primitives/__pycache__/cmac.cpython-39.pyc
a
�,�h� � @ sP d dl Z d dlmZ d dlmZ d dlmZ e jr>d dlm Z G dd� d�Z
dS )� N)�utils)�AlreadyFinalized)�ciphers)� _CMACContextc @ s� e Zd ZU ejd ed< ejed< dejejejd d�dd�Z e
dd�d d
�Z e
d �d d
�Z e
dd�dd�Z
d d �dd�ZdS )�CMACr �_ctx�
_algorithmN)� algorithm�backend�ctxc C sH t |tj�std��|| _|d u r>ddlm} |�| j�| _n|| _d S )Nz*Expected instance of BlockCipherAlgorithm.r )r
) �
isinstancer �BlockCipherAlgorithm� TypeErrorr Z,cryptography.hazmat.backends.openssl.backendr
Zcreate_cmac_ctxr )�selfr r
r Zossl� r �V/opt/nydus/tmp/pip-target-wkfpz8uv/lib64/python/cryptography/hazmat/primitives/cmac.py�__init__ s z
CMAC.__init__)�data�returnc C s. | j d u rtd��t�d|� | j �|� d S )N� Context was already finalized.r )r r r � _check_bytes�update)r r r r r r ) s
z CMAC.update)r c C s& | j d u rtd��| j �� }d | _ |S )Nr )r r �finalize)r �digestr r r r 0 s
z
CMAC.finalize)� signaturer c C s: t �d|� | jd u r td��| jd }| _|�|� d S )Nr r )r r r r �verify)r r r r r r r 7 s
z CMAC.verifyc C s& | j d u rtd��t| j| j �� d�S )Nr )r )r r r r �copy)r r r r r ? s
z CMAC.copy)NN)�__name__�
__module__� __qualname__�typing�Optional�__annotations__r r
�Anyr �bytesr r r r r r r r r s
�� r ) r Z cryptographyr Zcryptography.exceptionsr Z cryptography.hazmat.primitivesr �
TYPE_CHECKINGZ)cryptography.hazmat.backends.openssl.cmacr r r r r r �<module> s