o
    
þðc!  ã                   @   sn   d dl Z d dlmZ d dlmZ d dlmZmZmZm	Z	 e j
r%d dlmZ G dd„ de	ƒZG dd	„ d	eƒZdS )
é    N)Ú
exceptions)Úserialization)Ú_ED25519_KEY_SIZEÚ_ED25519_SIG_SIZEÚEd25519PrivateKeyÚEd25519PublicKey)ÚBackendc                   @   sT   e Zd Zddd„Zdejdejdefdd	„Zdefd
d„Z	dededdfdd„Z
dS )Ú_Ed25519PublicKeyÚbackendr   c                 C   ó   || _ || _d S ©N©Ú_backendÚ	_evp_pkey©Úselfr
   Úevp_pkey© r   úY/opt/certbot/lib/python3.10/site-packages/cryptography/hazmat/backends/openssl/ed25519.pyÚ__init__   ó   
z_Ed25519PublicKey.__init__ÚencodingÚformatÚreturnc                 C   sV   |t jju s|t jju r |t jjus|t jjurtdƒ‚|  ¡ S | j ||| | jd ¡S )Nz3When using Raw both encoding and format must be Raw)	r   ÚEncodingÚRawÚPublicFormatÚ
ValueErrorÚ_raw_public_bytesr   Ú_public_key_bytesr   )r   r   r   r   r   r   Úpublic_bytes   s   
ÿ
þ
ÿ
þÿÿz_Ed25519PublicKey.public_bytesc                 C   óp   | j j dt¡}| j j dt¡}| j j | j||¡}| j  |dk¡ | j  |d tk¡ | j j |t¡d d … S ©Nzunsigned char []úsize_t *é   r   )	r   Ú_ffiÚnewr   Ú_libÚEVP_PKEY_get_raw_public_keyr   Úopenssl_assertÚbuffer©r   ÚbufÚbuflenÚresr   r   r   r   0   ó   ÿz#_Ed25519PublicKey._raw_public_bytesÚ	signatureÚdataNc                 C   s¬   | j j ¡ }| j  || j jjk¡ | j j || j jj¡}| j j || j jj| j jj| j jj| j	¡}| j  |dk¡ | j j 
||t|ƒ|t|ƒ¡}|dkrT| j  ¡  tj‚d S )Nr$   )r   r'   ÚEVP_MD_CTX_newr)   r%   ÚNULLÚgcÚEVP_MD_CTX_freeÚEVP_DigestVerifyInitr   ÚEVP_DigestVerifyÚlenÚ_consume_errorsr   ÚInvalidSignature)r   r0   r1   Ú
evp_md_ctxr.   r   r   r   Úverify:   s(   
ÿûÿ
þz_Ed25519PublicKey.verify©r
   r   )Ú__name__Ú
__module__Ú__qualname__r   r   r   r   Úbytesr    r   r<   r   r   r   r   r	      s    
þý
ü
r	   c                   @   sd   e Zd Zddd„Zdefdd„Zdedefd	d
„Zdej	dej
dejdefdd„Zdefdd„ZdS )Ú_Ed25519PrivateKeyr
   r   c                 C   r   r   r   r   r   r   r   r   Q   r   z_Ed25519PrivateKey.__init__r   c                 C   sz   | j j dt¡}| j j dt¡}| j j | j||¡}| j  |dk¡ | j  |d tk¡ | j j |¡d d … }| j  	|¡S r"   )
r   r%   r&   r   r'   r(   r   r)   r*   Úed25519_load_public_bytes)r   r,   r-   r.   r    r   r   r   Ú
public_keyU   s   ÿz_Ed25519PrivateKey.public_keyr1   c                 C   sð   | j j ¡ }| j  || j jjk¡ | j j || j jj¡}| j j || j jj| j jj| j jj| j	¡}| j  |dk¡ | j j 
dt¡}| j j 
dt|ƒ¡}| j j ||||t|ƒ¡}| j  |dk¡ | j  |d tk¡ | j j ||d ¡d d … S )Nr$   zunsigned char[]r#   r   )r   r'   r2   r)   r%   r3   r4   r5   ÚEVP_DigestSignInitr   r&   r   r8   ÚEVP_DigestSignr*   )r   r1   r;   r.   r,   r-   r   r   r   Úsign`   s*   
ÿûÿz_Ed25519PrivateKey.signr   r   Úencryption_algorithmc                 C   sd   |t jju s|t jju r&|t jjus|t jjust|t jƒs"tdƒ‚|  ¡ S | j 	|||| | j
d ¡S )NzcWhen using Raw both encoding and format must be Raw and encryption_algorithm must be NoEncryption())r   r   r   ÚPrivateFormatÚ
isinstanceÚNoEncryptionr   Ú_raw_private_bytesr   Ú_private_key_bytesr   )r   r   r   rH   r   r   r   Úprivate_bytesw   s&   
ÿ
þ
ÿ
þÿýÿÿz _Ed25519PrivateKey.private_bytesc                 C   r!   r"   )	r   r%   r&   r   r'   ÚEVP_PKEY_get_raw_private_keyr   r)   r*   r+   r   r   r   rL   “   r/   z%_Ed25519PrivateKey._raw_private_bytesNr=   )r>   r?   r@   r   r   rD   rA   rG   r   r   rI   ÚKeySerializationEncryptionrN   rL   r   r   r   r   rB   P   s    
þýü
ûrB   )ÚtypingÚcryptographyr   Úcryptography.hazmat.primitivesr   Ú1cryptography.hazmat.primitives.asymmetric.ed25519r   r   r   r   ÚTYPE_CHECKINGÚ,cryptography.hazmat.backends.openssl.backendr   r	   rB   r   r   r   r   Ú<module>   s   <