| Current File : //lib/python3/dist-packages/cryptography/hazmat/backends/openssl/__pycache__/utils.cpython-312.pyc |
�
�3Tf� � �p � d dl mZ d dlZd dlmZ d dlmZ ej rd dlm Z dd�Z
d d�Z y)
� )� annotationsN)�hashes)� Prehashed)�Backendc �L � | j j || j j � }| j || j j k7 � | j j || j j � }| j j |� }| j |dk( � | j j r(| j j ||j d� }n&| j j ||j � }| j |dk( � | j j d� }| j j || j j |� }| j |dk( � | j |d dkD � | j j d|d � }| j j |||� }|dk7 r | j � }t d|� �| j j! ||d � d d S )N� r zsize_t *zunsigned char[]zError computing shared key.)�_lib�EVP_PKEY_CTX_new�_ffi�NULL�openssl_assert�gc�EVP_PKEY_CTX_free�EVP_PKEY_derive_init�%Cryptography_HAS_EVP_PKEY_SET_PEER_EX�EVP_PKEY_derive_set_peer_ex� _evp_pkey�EVP_PKEY_derive_set_peer�new�EVP_PKEY_derive�_consume_errors�
ValueError�buffer)�backend�evp_pkey�peer_public_key�ctx�res�keylen�buf�errorss �L/usr/lib/python3/dist-packages/cryptography/hazmat/backends/openssl/utils.py�_evp_pkey_deriver# s� � �
�,�,�
'�
'��'�,�,�2C�2C�
D�C� ���3�'�,�,�"3�"3�3�4�
�,�,�/�/�#�w�|�|� =� =�
>�C�
�,�,�
+�
+�C�
0�C� ���3�!�8�$��|�|�9�9��l�l�6�6� � �*�*�A�
�� �l�l�3�3� � �*�*�
�� ���3�!�8�$�
�\�\�
�
�j�
)�F�
�,�,�
&�
&�s�G�L�L�,=�,=�v�
F�C� ���3�!�8�$� ���6�!�9�q�=�)�
�,�,�
�
�,�f�Q�i�
8�C�
�,�,�
&�
&�s�C��
8�C�
�a�x��(�(�*���6��?�?� �<�<� � �s�F�1�I� .�q� 1�1� c � � t |t � s7t j |� }|j | � |j � } n |j }t | � |j k7 r t d� �| |fS )NzNThe provided data must be the same length as the hash algorithm's digest size.)
�
isinstancer r �Hash�update�finalize�
_algorithm�len� digest_sizer )�data� algorithm�hash_ctxs r" � _calculate_digest_and_algorithmr0 . sr � � �i�� +��;�;�y�)������ �� � �"�� �(�(� �
�4�y�I�)�)�)��
'�
�
�
�)� � r$ )r r �return�bytes)r- r2 r. z-typing.Union[Prehashed, hashes.HashAlgorithm]r1 z)typing.Tuple[bytes, hashes.HashAlgorithm]) �
__future__r �typing� cryptography.hazmat.primitivesr �/cryptography.hazmat.primitives.asymmetric.utilsr �
TYPE_CHECKING�,cryptography.hazmat.backends.openssl.backendr r# r0 � r$ r" �<module>r: sC ��
#�
� 1� E� ���D�2�< �
� �<� � /� r$