File: //lib/python3/dist-packages/cryptography/hazmat/backends/openssl/__pycache__/x25519.cpython-38.pyc
U
�e�]� � @ s� d dl mZmZmZ d dlZd dlmZ d dlmZ d dl m
Z
d dl m Z m
Z
dZe�e
�G dd � d e��Ze�e �G d
d � d e��ZdS ) � )�absolute_import�division�print_functionN)�utils)�_evp_pkey_derive)�
serialization)�X25519PrivateKey�X25519PublicKey� c @ s& e Zd Zdd� Zddd�Zdd� ZdS ) �_X25519PublicKeyc C s || _ || _d S �N��_backend� _evp_pkey��selfZbackend�evp_pkey� r �M/usr/lib/python3/dist-packages/cryptography/hazmat/backends/openssl/x25519.py�__init__ s z_X25519PublicKey.__init__Nc C s� |d ks|d krH|d k s |d k r*t d��n t�dtj� tjj}tjj}|tjjks`|tjjkr�|tjjk sx|tjjk r�t d��| � � S |tj
kr�|tjj k r�t d��| j �
||| | jd �S )Nz%Both encoding and format are requiredz�public_bytes now requires encoding and format arguments. Support for calling without arguments will be removed in cryptography 2.7z3When using Raw both encoding and format must be Rawz?format must be SubjectPublicKeyInfo when encoding is PEM or DER)�
ValueError�warnings�warnr ZDeprecatedIn25r �Encoding�Raw� PublicFormat�_raw_public_bytes�_PEM_DERZSubjectPublicKeyInfor Z_public_key_bytesr )r �encoding�formatr r r � public_bytes sF
�
�
�
�
���
�� �z _X25519PublicKey.public_bytesc C s| | j j�d�}| j j�| j|�}| j �|dk� | j �|d | j jjk� | j j�|d | j jj �}| j j�
||�d d � S )Nzunsigned char **r
r ) r �_ffi�new�_libZ EVP_PKEY_get1_tls_encodedpointr �openssl_assert�NULL�gcZ OPENSSL_free�buffer)r Zucharpp�res�datar r r r B s � �z"_X25519PublicKey._raw_public_bytes)NN)�__name__�
__module__� __qualname__r r r r r r r r s
(r c @ s4 e Zd Zdd� Zdd� Zdd� Zdd� Zd d
� Zd S ) �_X25519PrivateKeyc C s || _ || _d S r r
r r r r r Q s z_X25519PrivateKey.__init__c C sz | j �� }| j j�|| j�}| j �|dk� | j j�|| j jj�}| j �|| j jjk� | j j� || j jj
�}t | j |�S )N� ) r �_create_mem_bio_gcr# Zi2d_PUBKEY_bior r$ Zd2i_PUBKEY_bior! r% r& Z
EVP_PKEY_freer )r �bior( r r r r �
public_keyU s
� �z _X25519PrivateKey.public_keyc C s" t |t�std��t| j| j|�S )Nz(peer_public_key must be X25519PublicKey.)�
isinstancer � TypeErrorr r r )r Zpeer_public_keyr r r �exchangeb s
�z_X25519PrivateKey.exchangec C s� |t jjks|t jjkrL|t jjk s<|t jjk s<t|t j�sDtd��| �� S |t j krj|t jj
k rjtd��| j � |||| j
d �S )NzcWhen using Raw both encoding and format must be Raw and encryption_algorithm must be NoEncryption()z0format must be PKCS8 when encoding is PEM or DER)r r r r Z
PrivateFormatr2 Z NoEncryptionr �_raw_private_bytesr ZPKCS8r Z_private_key_bytesr )r r r Zencryption_algorithmr r r �
private_bytesj s8
�
�
�
�
���
�� �z _X25519PrivateKey.private_bytesc C s| | j �� }| j j�|| j| j jj| j jjd| j jj| j jj�}| j �|dk� | j �|�}| j �t |�dk� |t
d � S )Nr r. �0 ) r r/ r# Zi2d_PKCS8PrivateKey_bior r! r% r$ Z
_read_mem_bio�len�_X25519_KEY_SIZE)r r0 r( Zpkcs8r r r r5 � s
� z$_X25519PrivateKey._raw_private_bytesN)r* r+ r, r r1 r4 r6 r5 r r r r r- O s
r- )Z
__future__r r r r Z cryptographyr Z*cryptography.hazmat.backends.openssl.utilsr Z cryptography.hazmat.primitivesr Z0cryptography.hazmat.primitives.asymmetric.x25519r r r9 Zregister_interface�objectr r- r r r r �<module> s :