
    F/j	                     b    d dl Z d dlZd dlmZ d dlmZmZ d dlmZ d dl	m
Z
mZmZ d Zd Zd Zy)	    N)InvalidSignature)ecutils)hashes)b64urldecodeb64urlencodenum_to_bytesc           
      F   | j                  d      j                  dd      \  }}t        |      }t        |      dk7  r
t	               t        j                  t        t        j                  |dd       d      t        t        j                  |dd       d            }||fS )	zExtracts the payload and signature from a JWT, converting from RFC7518
    to RFC 3279

    :param auth: A JWT Authorization Token.
    :type auth: str

    :return tuple containing the signature material and signature

    utf8   .   @       N   )sr)
encodersplitr   lenr   r   encode_dss_signatureintbinasciihexlify)authpayloadasigsigencodeds        J/var/www/html/maxservice/venv/lib/python3.12/site-packages/py_vapid/jwt.pyextract_signaturer       s     KK'..tQ7MGT
t
C
3x2~  ((
hs23x("
-
hs3Bx("
-G G    c                    	 t        |       \  }}t        |j                  d            }t        j                  j                  t        j                         |      }|j                  ||t        j                  t        j                                      t        j                  t        |j                  d      d         j                  d            S # t        $ r  t         t"        t$        j&                  f$ r t               w xY w)zDecode a web token into an assertion dictionary

    :param token: VAPID auth token
    :type token: str
    :param key: bitarray containing the public key
    :type key: str

    :return dict of the VAPID claims

    :raise InvalidSignature

    r   r   r   )r    r   r   r   EllipticCurvePublicKeyfrom_encoded_point	SECP256R1verifyECDSAr   SHA256jsonloadssplitdecoder   
ValueError	TypeErrorr   Error)tokenkeysig_material	signaturedkeypkeys         r   r,   r,   !   s    !"3E":iCJJv./((;;LLN
 	HHV]]_%	

 zz++D1!45<<VD
 	
  y(..
1 !  !s   CC 2Dc                    t        d      }t        t        j                  | dd      j                  d            } dj	                  ||       }|j                  |j                  d      t        j                  t        j                                     }t        j                  |      \  }}t        t        |d      t        |d      z         }dj	                  ||      S )zSign the claims

    :param claims: list of JWS claims
    :type claims: dict
    :param key: Private key for signing
    :type key: ec.EllipticCurvePrivateKey
    :param algorithm: JWT "alg" descriptor
    :type algorithm: str

    s   {"typ":"JWT","alg":"ES256"}),:T)
separators	sort_keysr   z{}.{}r   )r   r)   dumpsr   formatsignr   r'   r   r(   r   decode_dss_signaturer	   )claimsr1   headerr0   rsigr   r   r   s           r   r=   r=   C   s     <=F$**V0:/355;VF^EF NN66*E88ELL("((6==?*CDD''-FQ
|Ar*\!R-@@
AC>>%%%r!   )r   r)   cryptography.exceptionsr   )cryptography.hazmat.primitives.asymmetricr   r   cryptography.hazmat.primitivesr   py_vapid.utilsr   r   r	   r    r,   r=    r!   r   <module>rG      s*      4 ? 1 C C,!D&r!   