B
    `
                 @   sP   d dl Z d dlmZmZ d dlmZ G dd de jdZG dd de jdZdS )	    N)UnsupportedAlgorithm_Reasons)_serializationc               @   s<   e Zd Zeed dddZejej	ej
edddZdS )X25519PublicKey)datareturnc             C   s*   ddl m} | s tdtj||S )Nr   )backendz3X25519 is not supported by this version of OpenSSL.),cryptography.hazmat.backends.openssl.backendr   x25519_supportedr   r   UNSUPPORTED_EXCHANGE_ALGORITHMZx25519_load_public_bytes)clsr   r    r   _/home/dcms/DCMS/lib/python3.7/site-packages/cryptography/hazmat/primitives/asymmetric/x25519.pyfrom_public_bytes   s    z!X25519PublicKey.from_public_bytes)encodingformatr   c             C   s   dS )z9
        The serialized bytes of the public key.
        Nr   )selfr   r   r   r   r   public_bytes   s    zX25519PublicKey.public_bytesN)__name__
__module____qualname__classmethodbytesr   abcabstractmethodr   EncodingZPublicFormatr   r   r   r   r   r      s   r   )	metaclassc               @   s|   e Zd Zed dddZeed dddZeje	dddZ
ejejejejed	d
dZeje	edddZdS )X25519PrivateKey)r   c             C   s(   ddl m} | s tdtj| S )Nr   )r   z3X25519 is not supported by this version of OpenSSL.)r	   r   r
   r   r   r   Zx25519_generate_key)r   r   r   r   r   generate%   s    zX25519PrivateKey.generate)r   r   c             C   s*   ddl m} | s tdtj||S )Nr   )r   z3X25519 is not supported by this version of OpenSSL.)r	   r   r
   r   r   r   Zx25519_load_private_bytes)r   r   r   r   r   r   from_private_bytes0   s    z#X25519PrivateKey.from_private_bytesc             C   s   dS )z9
        The serialized bytes of the public key.
        Nr   )r   r   r   r   
public_key<   s    zX25519PrivateKey.public_key)r   r   encryption_algorithmr   c             C   s   dS )z:
        The serialized bytes of the private key.
        Nr   )r   r   r   r!   r   r   r   private_bytesB   s    	zX25519PrivateKey.private_bytes)peer_public_keyr   c             C   s   dS )zY
        Performs a key exchange operation using the provided peer's public key.
        Nr   )r   r#   r   r   r   exchangeM   s    zX25519PrivateKey.exchangeN)r   r   r   r   r   r   r   r   r   r   r    r   r   ZPrivateFormatZKeySerializationEncryptionr"   r$   r   r   r   r   r   $   s   
r   )	r   Zcryptography.exceptionsr   r   Zcryptography.hazmat.primitivesr   ABCMetar   r   r   r   r   r   <module>   s   