3
ãdeó  ã               @   sn   d dl Z d dlmZ d dlmZ d dlmZmZ e jrBd dl	m
Z
 dZdZG dd	„ d	eƒZG d
d„ deƒZdS )é    N)Ú
exceptions)Úserialization)ÚEd448PrivateKeyÚEd448PublicKey)ÚBackendé9   ér   c               @   sP   e Zd Zddœdd„Zejejedœdd„Zedœd	d
„Z	eeddœdd„Z
dS )Ú_Ed448PublicKeyr   )Úbackendc             C   s   || _ || _d S )N)Ú_backendÚ	_evp_pkey)Úselfr
   Úevp_pkey© r   úa/var/www/agendate/envp3/lib/python3.6/site-packages/cryptography/hazmat/backends/openssl/ed448.pyÚ__init__   s    z_Ed448PublicKey.__init__)ÚencodingÚformatÚreturnc             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   r   r   r   r   r   Úpublic_bytes   s    z_Ed448PublicKey.public_bytes)r   c             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_ED448_KEY_SIZEÚ_libÚEVP_PKEY_get_raw_public_keyr   Úopenssl_assertÚbuffer)r   ÚbufÚbuflenÚresr   r   r   r   1   s    z!_Ed448PublicKey._raw_public_bytesN)Ú	signatureÚdatar   c             C   s¬   | j jjƒ }| j j|| j jjkƒ | j jj|| j jjƒ}| j jj|| j jj| j jj| j jj| j	ƒ}| j j|dkƒ | j jj
||t|ƒ|t|ƒƒ}|dkr¨| j jƒ  tj‚d S )Nr   )r   r   ÚEVP_MD_CTX_newr!   r   ÚNULLÚgcÚEVP_MD_CTX_freeZEVP_DigestVerifyInitr   ZEVP_DigestVerifyÚlenZ_consume_errorsr   ZInvalidSignature)r   r&   r'   Ú
evp_md_ctxr%   r   r   r   Úverify;   s     
z_Ed448PublicKey.verify)Ú__name__Ú
__module__Ú__qualname__r   r   r   r   Úbytesr   r   r.   r   r   r   r   r	      s   
r	   c               @   s`   e Zd Zddœdd„Zedœdd„Zeedœd	d
„Zej	ej
ejedœdd„Zedœdd„ZdS )Ú_Ed448PrivateKeyr   )r
   c             C   s   || _ || _d S )N)r   r   )r   r
   r   r   r   r   r   R   s    z_Ed448PrivateKey.__init__)r   c             C   sz   | 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|ƒd d … }| j j	|ƒS )Nzunsigned char []zsize_t *r   r   )
r   r   r   r   r   r    r   r!   r"   Zed448_load_public_bytes)r   r#   r$   r%   r   r   r   r   Ú
public_keyV   s    z_Ed448PrivateKey.public_key)r'   r   c             C   sð   | j jjƒ }| j j|| j jjkƒ | j jj|| j jjƒ}| j jj|| j jj| j jj| j jj| j	ƒ}| j j|dkƒ | j jj
dtƒ}| j jj
dt|ƒƒ}| j jj||||t|ƒƒ}| j j|dkƒ | j j|d tkƒ | j jj||d ƒd d … S )Nr   zunsigned char[]zsize_t *r   )r   r   r(   r!   r   r)   r*   r+   ZEVP_DigestSignInitr   r   Ú_ED448_SIG_SIZEr,   ZEVP_DigestSignr"   )r   r'   r-   r%   r#   r$   r   r   r   Úsigna   s$    z_Ed448PrivateKey.sign)r   r   Úencryption_algorithmr   c             C   sf   |t jjks|t jjkrN|t jjk	s>|t jjk	s>t|t jƒ rFtdƒ‚| jƒ S | jj	|||| | j
d ƒS )NzcWhen using Raw both encoding and format must be Raw and encryption_algorithm must be NoEncryption())r   r   r   ÚPrivateFormatÚ
isinstanceZNoEncryptionr   Ú_raw_private_bytesr   Z_private_key_bytesr   )r   r   r   r7   r   r   r   Úprivate_bytesx   s    z_Ed448PrivateKey.private_bytesc             C   sp   | j jjdtƒ}| j jjdtƒ}| j jj| j||ƒ}| j j|dkƒ | j j|d tkƒ | j jj|tƒd d … S )Nzunsigned char []zsize_t *r   r   )	r   r   r   r   r   ZEVP_PKEY_get_raw_private_keyr   r!   r"   )r   r#   r$   r%   r   r   r   r:   ”   s    z#_Ed448PrivateKey._raw_private_bytesN)r/   r0   r1   r   r   r4   r2   r6   r   r   r8   ZKeySerializationEncryptionr;   r:   r   r   r   r   r3   Q   s   r3   )ÚtypingZcryptographyr   Zcryptography.hazmat.primitivesr   Z/cryptography.hazmat.primitives.asymmetric.ed448r   r   ÚTYPE_CHECKINGZ,cryptography.hazmat.backends.openssl.backendr   r   r5   r	   r3   r   r   r   r   Ú<module>   s   <