B
    d?                 @   s  d dl Z d dlZd dlZd dlmZ y d dlmZ d dlmZm	Z	 W n e
k
rX   Y nX eeef edddZeeef edd	d
ZeedddZeedddZeeef edddZeeedddZeedddZeedddZededddZededdd Zd!d"d#d$d%d&d'd(d)d*d+d,d-d.d/d0hZed1d2e d3 ejZeed4d5d6Zd7Zed8Z d9d:d;d<d=d>gZ!eed4d?d@Z"dS )A    N)Union)EllipticCurve)decode_dss_signatureencode_dss_signature)valuereturnc             C   s.   t | tr| dS t | tr"| S tdd S )Nzutf-8zExpected a string value)
isinstancestrencodebytes	TypeError)r    r   V/work/yifan.wang/ringdown/master-ringdown-env/lib/python3.7/site-packages/jwt/utils.pyforce_bytes   s
    


r   )inputr   c             C   s6   t | }t|d }|dkr,|dd|  7 }t|S )N   r      =)r   lenbase64urlsafe_b64decode)r   Zinput_bytesremr   r   r   base64url_decode   s
    r   c             C   s   t | ddS )Nr       )r   urlsafe_b64encodereplace)r   r   r   r   base64url_encode$   s    r   )valr   c             C   s0   | dk rt dt| }t|dkr(d}t|S )Nr   zMust be a positive integer    )
ValueErrorbytes_from_intr   r   )r   	int_bytesr   r   r   to_base64url_uint(   s    r!   c             C   s   t t| }tj|ddS )Nbig)	byteorder)r   r   int
from_bytes)r   datar   r   r   from_base64url_uint4   s    r'   )num	num_bytesr   c             C   s    dd| | f }t |dS )Nz%0*x   ascii)binasciia2b_hexr
   )r(   r)   Z
padded_hexr   r   r   number_to_bytes9   s    r.   )stringr   c             C   s   t t| dS )N   )r$   r,   b2a_hex)r/   r   r   r   bytes_to_number>   s    r2   c             C   s6   | }d}x|dkr$|dL }|d7 }q
W | j |dddS )Nr         r"   F)signed)to_bytes)r   	remainingZbyte_lengthr   r   r   r   B   s    
r   r   )der_sigcurver   c             C   s2   |j }|d d }t| \}}t||t|| S )N   r3   )key_sizer   r.   )r8   r9   num_bitsr)   rsr   r   r   der_to_raw_signatureM   s    r?   )raw_sigr9   r   c             C   sX   |j }|d d }t| d| kr*tdt| d | }t| |d  }tt||S )Nr:   r3   r*   zInvalid signature)r;   r   r   r2   r   r   )r@   r9   r<   r)   r=   r>   r   r   r   raw_to_der_signatureV   s    rA   s   CERTIFICATEs   TRUSTED CERTIFICATEs   PRIVATE KEYs
   PUBLIC KEYs   ENCRYPTED PRIVATE KEYs   OPENSSH PRIVATE KEYs   DSA PRIVATE KEYs   RSA PRIVATE KEYs   RSA PUBLIC KEYs   EC PRIVATE KEYs   DH PARAMETERSs   NEW CERTIFICATE REQUESTs   CERTIFICATE REQUESTs   SSH2 PUBLIC KEYs   SSH2 ENCRYPTED PRIVATE KEYs   X509 CRLs   ----[- ]BEGIN (   |s,   )[- ]----?
.+??
----[- ]END \1[- ]----?
?)keyr   c             C   s   t t| S )N)bool_PEM_REsearch)rC   r   r   r   is_pem_format   s    rG   s   -cert-v01@openssh.coms   \A(\S+)[ \t]+(\S+)s   ssh-ed25519s   ssh-rsas   ssh-dsss   ecdsa-sha2-nistp256s   ecdsa-sha2-nistp384s   ecdsa-sha2-nistp521c                sP   t  fddtD rdS t }|rL|d}t|tt d  krLdS dS )Nc             3   s   | ]}| kV  qd S )Nr   ).0Zstring_value)rC   r   r   	<genexpr>   s    zis_ssh_key.<locals>.<genexpr>Tr4   F)any_SSH_KEY_FORMATS_SSH_PUBKEY_RCmatchgroup_CERT_SUFFIXr   )rC   Zssh_pubkey_matchZkey_typer   )rC   r   
is_ssh_key   s    

rP   )#r   r,   retypingr   Z,cryptography.hazmat.primitives.asymmetric.ecr   Z/cryptography.hazmat.primitives.asymmetric.utilsr   r   ModuleNotFoundErrorr   r	   r   r   r   r$   r!   r'   r.   r2   r   r?   rA   Z_PEMScompilejoinDOTALLrE   rD   rG   rO   rL   rK   rP   r   r   r   r   <module>   s`   		
