| Server IP : 217.160.0.135 / Your IP : 216.73.217.85 Web Server : Apache System : Linux www 6.18.52-i1-ampere #1203 SMP Mon Sep 14 18:29:59 CEST 2026 aarch64 User : sws1074145052 ( 1074145052) PHP Version : 8.3.32 Disable Function : NONE MySQL : OFF | cURL : ON | WGET : ON | Perl : ON | Python : OFF | Sudo : OFF | Pkexec : OFF Directory : /lib/python3/dist-packages/cryptography/hazmat/primitives/kdf/__pycache__/ |
Upload File : |
�
p�g� � � � d dl Z d dlmZ d dlmZmZ d dlmZmZm Z d dl
m Z G d� de � � Z G d� d e � � Z
dS )
� N)�utils)�AlreadyFinalized�
InvalidKey)�
constant_time�hashes�hmac)�KeyDerivationFunctionc � � e Zd Z ddej dedej e dej e dej f
d�Z
ded efd
�Z ded efd �Z ded ed dfd
�Z
dS )�HKDFN� algorithm�length�salt�info�backendc � � || _ |�d| j j z }nt j d|� � || _ t | j ||� � | _ d S )N� r )�
_algorithm� digest_sizer � _check_bytes�_salt�
HKDFExpand� _hkdf_expand)�selfr r
r r r s �I/usr/lib/python3/dist-packages/cryptography/hazmat/primitives/kdf/hkdf.py�__init__z
HKDF.__init__ sW � � $��� �<��T�_� 8�8�D�D� � �v�t� ,� ,� ,���
� &�t���� E� E����� � key_material�returnc � � t j | j | j � � }|� |� � |� � � S �N)r �HMACr r �update�finalize)r r �hs r �_extractz
HKDF._extract% s7 � � �I�d�j�$�/� 2� 2�� ��� � � � ��z�z�|�|�r c � � t j d|� � | j � | � |� � � � S )Nr )r �_check_bytesliker �deriver% �r r s r r( z HKDF.derive* s8 � �
� �~�|�<�<�<�� �'�'��
�
�l�(C�(C�D�D�Dr � expected_keyc �d � t j | � |� � |� � st �d S r �r �bytes_eqr( r �r r r* s r �verifyz HKDF.verify. �3 � � �%�d�k�k�,�&?�&?� �N�N� � � � � r r )�__name__�
__module__� __qualname__r �
HashAlgorithm�int�typing�Optional�bytes�Anyr r% r( r/ � r r r r s� � � � � � � #�
F� F��'�F� �F� �o�e�$� F�
�o�e�$� F� ��
F� F� F� F�& �U� �u� � � � �
E�5� E�U� E� E� E� E� �5� �� �$� � � � � � r r c � � e Zd Z d
dej dedej e dej fd�Z
dedefd �Z dedefd
�Z ded eddfd �Z
dS )r Nr r
r r c �� � || _ d|j z }||k r"t d� |� � � � �|| _ |�d}nt j d|� � || _ d| _ d S )N� z)Cannot derive keys larger than {} octets.r r F) r r �
ValueError�format�_lengthr r �_info�_used)r r r
r r �
max_lengths r r zHKDFExpand.__init__4 s� � � $����9�0�0�
� �J� � � �;�B�B�:�N�N�� �
� �� � �<��D�D� � �v�t� ,� ,� ,���
���
�
�
r r r c �, � dg}d}| j j t |� � dz
z | j k r�t j || j � � }|� |d � � |� | j � � |� t |g� � � � |� |�
� � � � |dz
}| j j t |� � dz
z | j k ��d� |� � d | j � S )Nr � ���) r r �lenr@ r r! r" rA r8 �appendr# �join)r r �output�counterr$ s r �_expandzHKDFExpand._expandO s� � �������o�)�S��[�[�1�_�=�� �L�L�� �,���8�8�A�
�H�H�V�B�Z� � � �
�H�H�T�Z� � � �
�H�H�U�G�9�%�%� &� &� &� �M�M�!�*�*�,�,� '� '� '� �q�L�G�
�o�)�S��[�[�1�_�=�� �L�L� �x�x�� � ��$�,��/�/r c � � t j d|� � | j rt �d| _ | � |� � S )Nr T)r r' rB r rL r) s r r( zHKDFExpand.derive] s> � �
� �~�|�<�<�<� �:� #�"� "���
��|�|�L�)�)�)r r* c �d � t j | � |� � |� � st �d S r r, r. s r r/ zHKDFExpand.verifye r0 r r )r1 r2 r3 r r4 r5 r6 r7 r8 r9 r rL r( r/ r: r r r r 3 s� � � � � � � #� � ��'�� �� �o�e�$� �
�� � � � �6 0�E� 0�e� 0� 0� 0� 0� *�5� *�U� *� *� *� *� �5� �� �$� � � � � � r r )r6 � cryptographyr �cryptography.exceptionsr r � cryptography.hazmat.primitivesr r r �"cryptography.hazmat.primitives.kdfr r r r: r r �<module>rS s� �� �
�
�
� � � � � � �� � � � � � � � G� F� F� F� F� F� F� F� F� F� D� D� D� D� D� D� � � � � � � � � �D4 � 4 � 4 � 4 � 4 �&� 4 � 4 � 4 � 4 � 4 r