Current File : //lib/python3/dist-packages/cryptography/hazmat/primitives/kdf/__pycache__/scrypt.cpython-312.pyc
�
�3Tf2 � � � d dl mZ d dlZd dlZd dlmZ d dlmZmZm Z d dl
m Z d dl
mZ d dlmZ ej" dz Z G d � d
e� Zy) � )� annotationsN)�utils)�AlreadyFinalized�
InvalidKey�UnsupportedAlgorithm)�openssl)�
constant_time)�KeyDerivationFunction� c �> � e Zd Z d dd�Zdd�Zdd�Zy) �ScryptNc �< � ddl m} |j � s t d� �|| _ t j d|� |dk s ||dz
z dk7 r t d� �|dk r t d� �|dk r t d � �d
| _ || _ || _
|| _ || _ y ) Nr )�backendz/This version of OpenSSL does not support scrypt�saltr � z-n must be greater than 1 and be a power of 2.z%r must be greater than or equal to 1.z%p must be greater than or equal to 1.F)
�,cryptography.hazmat.backends.openssl.backendr �scrypt_supportedr �_lengthr � _check_bytes�
ValueError�_used�_salt�_n�_r�_p)�selfr �length�n�r�pr �ossls �K/usr/lib/python3/dist-packages/cryptography/hazmat/primitives/kdf/scrypt.py�__init__zScrypt.__init__ s� � �
� �$�$�&�&�A��
� �� �
���6�4�(� �q�5�Q�!�a�%�[�Q�&� � L�M� M� �q�5� � D�E� E� �q�5� � D�E� E���
���
���������� c � � | j r t d� �d| _ t j d|� t j
j
|| j | j | j | j t | j � S )Nz'Scrypt instances can only be used once.T� key_material)
r r r �_check_byteslike� rust_openssl�kdf�
derive_scryptr r r r �
_MEM_LIMITr )r r& s r" �derivez
Scrypt.derive< sn � � �:�:�"�#L�M� M���
�
� � �~�|�<�� � �-�-� � �J�J� �G�G� �G�G� �G�G� � �L�L�
�
r$ c �h � | j |� }t j ||� s t d� �y )NzKeys do not match.)r, r �bytes_eqr )r r& � expected_key� derived_keys r" �verifyz
Scrypt.verifyM s2 � ��k�k�,�/� � �%�%�k�<�@� � 1�2� 2� Ar$ )N) r �bytesr �intr r3 r r3 r r3 r z
typing.Any)r& r2 �returnr2 )r& r2 r/ r2 r4 �None)�__name__�
__module__� __qualname__r# r, r1 � r$ r" r
r
sQ � � #� �� � � � � �
� � �
� � �D
�"3r$ r
)�
__future__r �sys�typing� cryptographyr �cryptography.exceptionsr r r �"cryptography.hazmat.bindings._rustr r( � cryptography.hazmat.primitivesr �"cryptography.hazmat.primitives.kdfr
�maxsizer+ r
r9 r$ r" �<module>rC sF ��
#�
�
� �� �
G� 8� D� �[�[�A�
�
�73�
"� 73r$
Mini Shell