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o �h � @ s� d dl mZ d dlZd dlmZ d dlmZ d dlmZ d dl m Z d d d�Z d!d"dd�Z d#dd�Z d!d"dd�Z d!d$dd�Z d!d$d d �ZG d d � d e�ZdS )%� )� annotationsN)�Cipher)�AES)�ECB)�bytes_eq� wrapping_key�bytes�a�r� list[bytes]�returnc C s� t t| �t� ��� }t|�}td�D ]2}t|�D ]+}|�||| �}tj|d d� dd�|| | d A j ddd�}|dd � ||< qq|� � dksMJ �|d� |� S ) N� � �big�� byteorder� ��lengthr ���� ) r r r � encryptor�len�range�update�int� from_bytes�to_bytes�finalize�join)r r r r �n�j�i�b� r$ �Y/usr/local/CyberCP/lib/python3.10/site-packages/cryptography/hazmat/primitives/keywrap.py� _wrap_core s $�� r& � key_to_wrap�backend� typing.Anyc sn t | �dvr td��t � �dk rtd��t � �d dkr td��d}� fd d �tdt � �d�D �}t| ||�S ) N�� � � �/The wrapping key must be a valid AES key lengthr+ z)The key to wrap must be at least 16 bytesr r z-The key to wrap must be a multiple of 8 bytes� ��������c � g | ] }� ||d � �qS �r r$ ��.0r" �r' r$ r% � <listcomp>6 � z aes_key_wrap.<locals>.<listcomp>)r � ValueErrorr r& )r r' r( r r r$ r4 r% � aes_key_wrap' s r8 �tuple[bytes, list[bytes]]c C s� t t| �t� ��� }t|�}ttd��D ]6}tt|��D ]-}tj|dd�|| | d A j ddd�|| }|� |�}|d d� }|dd � ||< q q|� � dksSJ �||fS ) Nr r r r r r r r ) r r r � decryptorr �reversedr r r r r r ) r r r r: r r! r" �atrr# r$ r$ r% � _unwrap_core: s �� � r= c s� t | �dvr td��dt � �jddd� }dt � �d d }� d| � t � �dkrFtt| �t� ��� }|�|� �}|�� d ksDJ �|S � fd d �t d t � �d�D �}t | ||�S ) Nr* r. � �YY�� r r r � r c r0 r1 r$ r2 r4 r$ r% r5 f r6 z-aes_key_wrap_with_padding.<locals>.<listcomp>r ) r r7 r r r r r r r r r& )r r' r( �aiv�padr r# r r$ r4 r% �aes_key_wrap_with_paddingQ s � rC � wrapped_keyc sf t � �dk r td��t | �dvrtd��t � �dkr@tt| �t� ��� }|�� �}|�� dks1J �|d d� }|dd � }d}n%� fdd �t d t � �d�D �}|� d �} t |�}t | | |�\}}d� |�}t j|d d � d d �} d| | } t|d d � d�r�d|d | k r�d| kr�n t� �| d kr�t|| d � d| �s�t� �| d kr�|S |d | � S )Nr+ zMust be at least 16 bytesr* r. r r r c r0 r1 r$ r2 �rD r$ r% r5 ~ r6 z/aes_key_unwrap_with_padding.<locals>.<listcomp>r r? r r r> r@ )r � InvalidUnwrapr7 r r r r: r r r �popr= r r r r ) r rD r( r: �outr �datar r � encrypted_aiv�mlir# r$ rE r% �aes_key_unwrap_with_paddingj s6 �" �rL c s� t � �dk r td��t � �d dkrtd��t | �dvr td��d}� fd d �tdt � �d�D �}|�d�}t| ||�\}}t||�sFt� �d �|�S ) Nr, zMust be at least 24 bytesr r z-The wrapped key must be a multiple of 8 bytesr* r. r/ c r0 r1 r$ r2 rE r$ r% r5 � r6 z"aes_key_unwrap.<locals>.<listcomp>r )r rF r7 r rG r= r r )r rD r( rA r r r$ rE r% �aes_key_unwrap� s rM c @ s e Zd ZdS )rF N)�__name__� __module__� __qualname__r$ r$ r$ r% rF � s rF )r r r r r r r r )N)r r r' r r( r) r r )r r r r r r r r9 )r r rD r r( r) r r )� __future__r �typing�&cryptography.hazmat.primitives.ciphersr �1cryptography.hazmat.primitives.ciphers.algorithmsr �,cryptography.hazmat.primitives.ciphers.modesr �,cryptography.hazmat.primitives.constant_timer r& r8 r= rC rL rM � ExceptionrF r$ r$ r$ r% �<module> s" � � �1 �
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