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3
lá˜_«  ã               @   s„   d dl mZmZmZ d dlmZ d dlmZ d dlm	Z	 d dl
mZmZ dZejeƒG dd„ deƒƒZejeƒG d	d
„ d
eƒƒZdS )é    )Úabsolute_importÚdivisionÚprint_function)Úutils)Ú_evp_pkey_derive)Úserialization)ÚX448PrivateKeyÚX448PublicKeyé8   c               @   s$   e Zd Zdd„ Zdd„ Zdd„ ZdS )Ú_X448PublicKeyc             C   s   || _ || _d S )N)Ú_backendÚ	_evp_pkey)ÚselfÚbackendÚevp_pkey© r   ú/usr/lib64/python3.6/x448.pyÚ__init__   s    z_X448PublicKey.__init__c             C   sV   |t jjks|t jjkr@|t jjk	s0|t jjk	r8tdƒ‚| jƒ S | jj||| | jd ƒS )Nz3When using Raw both encoding and format must be Raw)	r   ÚEncodingÚRawÚPublicFormatÚ
ValueErrorÚ_raw_public_bytesr   Z_public_key_bytesr   )r   ÚencodingÚformatr   r   r   Úpublic_bytes   s    z_X448PublicKey.public_bytesc             C   sp   | j jjdtƒ}| j jjdtƒ}| j jj| j||ƒ}| j j|dkƒ | j j|d tkƒ | j jj|tƒd d … S )Nzunsigned char []zsize_t *é   r   )	r   Ú_ffiÚnewÚ_X448_KEY_SIZEÚ_libÚEVP_PKEY_get_raw_public_keyr   Úopenssl_assertÚbuffer)r   ÚbufÚbuflenÚresr   r   r   r   +   s    z _X448PublicKey._raw_public_bytesN)Ú__name__Ú
__module__Ú__qualname__r   r   r   r   r   r   r   r      s   r   c               @   s4   e Zd Zdd„ Zdd„ Zdd„ Zdd„ Zd	d
„ ZdS )Ú_X448PrivateKeyc             C   s   || _ || _d S )N)r   r   )r   r   r   r   r   r   r   8   s    z_X448PrivateKey.__init__c             C   sd   | j jjdtƒ}| j jjdtƒ}| j jj| j||ƒ}| j j|dkƒ | j j|d tkƒ | j j|ƒS )Nzunsigned char []zsize_t *r   r   )	r   r   r   r   r    r!   r   r"   Zx448_load_public_bytes)r   r$   r%   r&   r   r   r   Ú
public_key<   s    z_X448PrivateKey.public_keyc             C   s"   t |tƒstdƒ‚t| j| j|ƒS )Nz&peer_public_key must be X448PublicKey.)Ú
isinstancer	   Ú	TypeErrorr   r   r   )r   Zpeer_public_keyr   r   r   ÚexchangeF   s    
z_X448PrivateKey.exchangec             C   sf   |t jjks|t jjkrN|t jjk	s>|t jjk	s>t|t jƒ rFtdƒ‚| jƒ S | j	j
|||| | jd ƒS )NzcWhen using Raw both encoding and format must be Raw and encryption_algorithm must be NoEncryption())r   r   r   r   ZPrivateFormatr,   ZNoEncryptionr   Ú_raw_private_bytesr   Z_private_key_bytesr   )r   r   r   Zencryption_algorithmr   r   r   Úprivate_bytesL   s    z_X448PrivateKey.private_bytesc             C   sp   | j jjdtƒ}| j jjdtƒ}| j jj| j||ƒ}| j j|dkƒ | j j|d tkƒ | j jj|tƒd d … S )Nzunsigned char []zsize_t *r   r   )	r   r   r   r   r    ZEVP_PKEY_get_raw_private_keyr   r"   r#   )r   r$   r%   r&   r   r   r   r/   c   s    z"_X448PrivateKey._raw_private_bytesN)r'   r(   r)   r   r+   r.   r0   r/   r   r   r   r   r*   6   s
   
r*   N)Z
__future__r   r   r   Zcryptographyr   Z*cryptography.hazmat.backends.openssl.utilsr   Zcryptography.hazmat.primitivesr   Z.cryptography.hazmat.primitives.asymmetric.x448r   r	   r   Zregister_interfaceÚobjectr   r*   r   r   r   r   Ú<module>   s   #